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The Polygraph Dilemma: New Hampshire’s Trooper Screening Flaws

The Honesty Trap: New Hampshire’s Trooper Polygraph Problem — Granite State Report
Independent New Hampshire Journalism · Northfield, NH
Policing · Accountability

The Honesty Trap

New Hampshire screens its troopers with a lie detector the National Academy of Sciences says can’t reliably tell truth from lies. The candidates it weeds out are often the ones who told the truth.

If you want to wear the gray and green of the New Hampshire State Police, the state will measure almost everything about you. Your age, your eyesight, your push-ups, your credit history, your military discharge, the contents of your record back to childhood. Then, after a conditional offer of employment, it will strap a blood-pressure cuff and two breathing tubes to your body, attach sensors to your fingers, and ask you whether you have ever lied, stolen, or used drugs.

That last step is the polygraph. And here is the part the state does not advertise: the most authoritative scientific review ever conducted on the device concluded it does not measure lying at all. It measures whether your heart rate, breathing, and sweat change when you answer a question. An honest person who is frightened looks guilty. A practiced liar who is calm looks innocent. The machine cannot tell the difference, and the people who study it for a living have been saying so for decades.

If a hiring test rewards composure under accusation and punishes nervous honesty, what kind of person does it pass? And what kind does it fail?

What it takes to become a New Hampshire trooper

The requirements come from three layers of authority that most applicants never see laid out together: the Division of State Police recruitment standards, the certification rules of the New Hampshire Police Standards and Training Council, and the statutes behind both. No one wears a badge in this state without certification from the Training Council, and certification carries its own floor of requirements on top of whatever an individual department asks.

The baseline to apply is narrower than people assume. You must be at least 21 years old and a United States citizen on or before the date of the examination. You need either an associate degree or 60 college credit hours, or a high school diploma or GED paired with two years of full-time certified law-enforcement work or honorable military service. You do not need a New Hampshire driver’s license to apply, but you must obtain one, and establish residency in your assigned patrol area, before you finish field training. Your uncorrected vision must be at least 20/100 in each eye, correctable to 20/40 near and 20/30 distant, with normal color and depth perception.

The selection sequence runs in a fixed order. A written exam and a physical fitness test, both held the same day in Concord. An oral board. Then a conditional offer, followed by the polygraph, a personal interview with the Director of State Police, a psychological examination, a medical examination, and a drug screen. Applicants can be drug-tested without warning at any point. Those who make it through report to the 16-week, 640-hour full-time academy run by the Training Council in Concord.

The physical test is built on the Cooper Institute standards and set at the 35th percentile, adjusted for age and sex, across three events: one minute of sit-ups, a maximum-effort set of push-ups, and a timed 1.5-mile run. Under state law and Training Council rule, officers have to re-pass that 35th-percentile test once every three years to keep their certification. That recurring requirement has been a running fight in Concord: a 2023 bill, HB 113, would have repealed it outright, and it split the state’s police chiefs before dying. The requirement still stands.

The cut-scores, on the record. The 35th-percentile bar is public, and it is not high. For a male officer aged 18 to 29, the Cooper-based standard the Training Council uses is 27 push-ups, 37 sit-ups in a minute, and a 1.5-mile run in under 12 minutes, 53 seconds. The thresholds drop proportionally for women and for older officers in 10-year bands. These are the entry numbers a recruit clears to start the academy and the same numbers a sworn officer must re-clear every three years. Read RSA 106-L:6 →

The bright-line bars

Some disqualifiers are categorical. A few are obvious. Others catch people who assumed their past was far enough behind them.

You are ineligible if you have used marijuana within the past 12 months, or illegally used any other controlled substance within 36 months, or 24 months if you were under 21 at the time. Selling or transporting drugs for sale disqualifies you outright, as does using any controlled substance while employed in a law-enforcement role. A dishonorable discharge ends it. So does a felony conviction of any kind.

The misdemeanor rule is broader than most people expect. A candidate is disqualified by any misdemeanor involving dishonesty, unlawful sexual conduct, physical violence, controlled substances, moral turpitude, or, in the Division’s words, any offense that would cause a reasonable person to doubt the applicant’s character, honesty, or ability. The itemized list of disqualifying offenses runs long, from arson and bribery to aggravated DWI. And any willful misrepresentation or omission during the application itself is grounds for rejection.

Beyond the bright lines, the Division warns that a pattern of motor-vehicle collisions and violations works against a candidate, and that poor credit and financial history, late payments, overdrafts, debt out of proportion to income, counts too. Prior involuntary terminations and integrity problems in an applicant’s work history are common discretionary disqualifiers across policing.

18 U.S.C. § 922(g)(9) — the Lautenberg Amendment is the one nobody can waive. Passed in 1996, it permanently bars anyone convicted of a misdemeanor crime of domestic violence from possessing a firearm or ammunition. There is no exception for police or the military; Congress removed the on-duty exemption that would otherwise apply when it wrote the law. Because a trooper has to carry a firearm, a qualifying domestic-violence misdemeanor is effectively career-ending. The Justice Department’s own manual notes the oddity that a felon may keep a narrow on-duty firearms exemption while a person convicted of a qualifying misdemeanor does not. The ban reaches convictions from before 1996, has survived constitutional challenge, and was extended in 2022 to certain dating partners. Read § 922(g)(9) →

The disqualifier list reads like a confession booth

The Division’s public list of automatic disqualifiers is where the screen stops being abstract. It runs to roughly 180 offenses, alphabetical, headed by the word “Examples,” which means it is not even complete. Capital murder is on it. So is arson. So is aggravated felonious sexual assault. And sitting on the same flat list, given no less weight on the page, are these: shoplifting. Willful concealment. Simple assault. Disorderly conduct. Harassment. Unlawful possession of alcohol. Inhaling toxic vapors for effect. Desecration of the U.S. flag. Issuing bad checks. Theft of lost or mislaid property. Possession of more than one driver’s license. And, my favorite, receiving unsolicited merchandise.

The list ranks nothing. On its face it states no lookback window, no severity floor, no line between a conviction and the bare act. It puts a teenager who pocketed a candy bar in the same column as a murderer and lets the background process sort out the rest. Which raises a fair question for anyone who was ever seventeen.

“I stole a candy bar in high school. Is that a disqualifier?” Read the list literally and the answer is yes: shoplifting and willful concealment are both right there, between burglary and bigamy.

That is not as flip as it sounds. On a dare, a sneak, a teenage impulse — the act is the act, and the page does not grade it.

Almost everyone who reaches adulthood has done at least one thing on that page. Snuck a beer before turning 21: unlawful possession of alcohol. Shoved someone at a party: simple assault. Got loud and got ejected from a bar: disorderly conduct. The list is not describing rare criminality so much as the ordinary business of being young in America. The reason most applicants are not stopped by it is not that they are cleaner than everyone else. It is that they do not remember, were never caught, or do not volunteer it. Which is the problem the polygraph creates rather than solves.

Here is the uncomfortable mechanic. To pass a test that punishes disclosure, the ideal applicant has a short memory. Forget the candy bar. Forget the beer. Forget the shoving match. A candidate who does not recall a long-ago petty offense sails through the relevant question with a clean physiological response, because there is nothing to suppress. The honest one who remembers, and says so, hands the background investigator a disqualifier off the list. The system does not reward the cleaner person. It rewards the one with the worse memory, or the better poker face.

It gets worse, because you do not even have to know you broke a law to have broken one. The federal and state codes are now so vast that legal scholars have a name for the condition. Civil-liberties lawyer Harvey Silverglate’s book Three Felonies a Day argues that the average professional unknowingly commits several federal crimes in the course of an ordinary day, simply because the statutes are too many and too vague to track. Argue with the exact count if you like. You cannot seriously argue that an ordinary person can read, understand, and comply with the entirety of the criminal law, because no one can. The people enforcing it are not exempt from that ignorance. Nothing in the trooper hiring process tests whether a candidate knows the law. It tests whether their pulse jumps. A profession screened for composure instead of legal knowledge should not surprise anyone when its officers turn out to know the law about as well as the rest of us, which is to say, not very well.

The morality clock runs backward, too

Then there is the problem of standing still while the law moves under your feet. The Division disqualifies anyone who “used marijuana within 12 months.” That is the verbatim rule, and it contains no exception for where the use happened or whether it was legal there.

Hold that against the map. New Hampshire is the only state in New England that has not legalized recreational marijuana. It is ringed by states that have: Massachusetts, Maine, and Vermont all border it, and adults can buy and use cannabis legally in every one of them. By the federal government’s own survey, more than half of all Americans now live in a state that has legalized adult use. So a New Hampshire resident who drove to a licensed shop in Maine last summer and used marijuana entirely legally, breaking no law of any jurisdiction, is disqualified from the State Police this year. Conduct that was lawful where and when it happened is treated as a stain on character twelve months later.

The flat 12-month window breeds its own perversity. A person who used marijuana once, legally, eleven months ago is barred. A person who used it heavily for years but happened to stop thirteen months ago is eligible. The rule does not measure the conduct. It measures the calendar. And it cuts backward through history, too. Conduct that was a crime when you committed it can be legal now, and conduct that is legal now can be criminalized by next session. The line between an upstanding citizen and a person of “poor moral character” is not fixed. It is whatever the legislature last voted, applied to a life already lived under the old rules. One day you are clean. The next day a bill takes effect and your past is disqualifying.

So who is left eligible?

New Hampshire does not publish how many people apply to be troopers, how many wash out at each stage, or how many graduate the academy. The numbers that would let anyone calculate a clean eligibility rate are not on the state’s website. They should be. Any precise “X percent of New Hampshire adults could qualify” figure would be a fabrication, and this paper does not print those.

What can be done, without fabricating anything, is to stack the filters using real national data and show which way they point. Treat this as an illustration, not a measurement. Roughly 8 percent of American adults carry a felony conviction, by a 2017 study in the journal Demography — about 19 million people, every one of them barred outright. About 30 percent of Americans have been arrested at least once by age 23, by a 2012 study in Pediatrics; an arrest is not a disqualifying conviction, but it marks how routine brushes with the system are, and how much the polygraph has to surface or miss. In 2023, the federal government’s drug-use survey found that 15 percent of Americans aged 12 and older had used marijuana in just the past month, and the disqualifier reaches back a full year, so the truly disqualifying share is larger. Layer on the offenses from that 180-item list that a majority of people have technically committed, then a 35th-percentile fitness test, a clean-enough driving and credit history, a psychological screen, and a polygraph that the best available survey data says rejects about one in four of the people who sit for it.

Stack those and the eligible-and-willing pool stops being a slice of the population and becomes a sliver. Not because every standard is wrong, but because honesty about an ordinary American life collides with a list that treats an ordinary American life as suspect. The polygraph is one of the sharpest blades in that stack, and the state is sitting on the data that would show exactly how sharp.

What the polygraph really measures

For all the theater of the wires and the cuff, the polygraph records exactly three things: cardiovascular activity, respiration, and electrodermal activity, the faint changes in how well your skin conducts electricity when you sweat. That is the whole of it. The machine is an arousal meter, and it has never been anything else.

The definitive word came in 2003, when the National Research Council, the operating arm of the National Academy of Sciences, published The Polygraph and Lie Detection at the request of the U.S. Department of Energy. The panel reviewed nearly a century of research. Its conclusions were blunt.

“Almost a century of research in scientific psychology and physiology provides little basis for the expectation that a polygraph test could have extremely high accuracy.”

The responses the machine measures, the panel wrote, “are not uniquely related to deception.” Plenty of things move the needle besides a lie, including some a nervous person sets off without trying and a trained one triggers on purpose. Even under the best conditions the panel could picture (one suspect, one known incident, a subject who has not studied the countermeasures), the device sorts truth from lie only “well above chance, though well below perfection.” For the broad net cast in hiring, the panel added, accuracy is “almost certainly lower.”

The American Psychological Association puts it more plainly still. Most psychologists, the association says, agree there is little evidence a polygraph can accurately detect lies, for one core reason: “There is no evidence that any pattern of physiological reactions is unique to deception. An honest person may be nervous when answering truthfully and a dishonest person may be non-anxious.”

The panel also named the failure that matters most for hiring. The people most likely to be flagged as liars, it found, are “truthful members of socially stigmatized groups and truthful examinees who are believed to be guilty.” Read that twice. The device’s built-in danger is the false positive: the honest applicant branded a liar.

The psychopath theory, and where it breaks

There is a popular idea, repeated often enough that it sounds like fact, that psychopaths can beat the polygraph. The reasoning is intuitive. If the machine runs on fear and a psychopath feels little fear, the psychopath should glide through. From there it is a short step to a darker claim, that a fear-based test selects for the cold and the callous: the nervous honest applicant fails, the fearless deceiver passes, and over thousands of hires the profession quietly tilts toward people with psychopathic traits.

It is a provocative theory, and in its strong form the evidence does not support it.

Start with the part that holds up. Psychopaths do show blunted fear, less of the anticipatory sweat the polygraph keys on. That is the “low-fear hypothesis,” traced to David Lykken in the late 1950s and reinforced by Robert Hare’s work on muted autonomic responses. The effect is modest and uneven, recent brain-imaging has muddied it further, and even so the basic association holds.

The leap that fails is the next one, that reduced lab arousal lets a psychopath defeat a real, high-stakes polygraph. Two landmark studies set out to test exactly that, and both came back the other way.

In 1978, Raskin and Hare ran 48 prison inmates, half of them diagnosed psychopaths, through a mock-theft scenario with a blind examiner. No guilty subject, psychopath or not, produced a truthful result on the test. The psychopaths were as physiologically responsive as everyone else, and on some measures more so. The authors’ conclusion was that “sufficiently aroused or motivated psychopaths are not hyporesponsive.” When something is on the line, the fearlessness fades.

In 1989, Patrick and Iacono designed a study specifically to give psychopaths the advantage, testing inmates under a realistic threat tied to the group’s behavior. The result: “Guilty psychopaths were detected just as easily as guilty nonpsychopaths.” The hypothesis the study was built to confirm was not confirmed.

“What evidence there is, however, indicates that psychopaths respond to polygraph testing in a similar manner to other individuals.”

That line is from a 2010 review in the Journal of the American Academy of Psychiatry and the Law, and it reflects the weight of the research. The clean version of the theory, that only psychopaths can beat the box, is a myth.

The part of the theory that survives

Dismissing the strong claim does not dismiss the whole concern. Two findings sit underneath it, and together they describe a real problem even if the psychopath framing was wrong.

The first is about who beats the test. In a 1994 study, Honts, Raskin, and Kircher trained ordinary volunteers in simple countermeasures: bite your tongue, press your toes into the floor, count backward by seven during the control questions. Roughly half of them defeated the polygraph, and the examiners mostly could not tell. The people who beat the machine were not a personality type. They were the ones who studied for it. A deceptive applicant who reads up on countermeasures has a coin-flip’s chance of passing. The honest applicant, who has no reason to prepare, walks in cold.

The second is about who gets caught telling the truth. The polygraph’s real-world “value” is less about catching lies than about extracting confessions. An applicant wired to a machine he believes can read his mind tends to admit things he would otherwise keep quiet. A 2024 Chicago police hiring case put the trap in plain view: a recruit was flagged for disqualification over college drug use he volunteered during his own background interview and polygraph, not over any arrest, and not over any later problem. His lawyer argued that punishing that candor tells dishonest applicants it is better to lie about things that background investigators can’t refute. The applicant who disclosed drew the disqualification. The one who would have stayed quiet drew nothing.

Put those two findings together and you do not get “the polygraph hires psychopaths.” You get something narrower and better supported: a test that can be beaten by preparation, and that disproportionately penalizes candor. The selection pressure is not toward a clinical disorder. It is toward whatever combination of composure, preparation, and willingness to withhold gets a person through. Calling that “psychopathy” overstates it. Calling it harmless understates it.

There is one more thread to handle here, and it is the easiest to get wrong. Peer-reviewed work does exist on personality traits in police. Researchers using a standard trait inventory have found that officers tend to score lower on the impulsive, antisocial facet of psychopathy and higher on the “fearless dominance” facet: boldness, stress immunity, social confidence. The researchers themselves stress that this is a finding about adaptive personality traits, not a diagnosis, and explicitly warn against reading it as “police officers are psychopaths.” A trooper who stays calm with a gun pointed at the cruiser is showing exactly the trait you would want. The data describe temperament, not pathology.

The one lie the badge protects

Here is a fact that sits oddly next to a test built to screen for honesty: a New Hampshire police officer is legally allowed to lie to you. Not as misconduct. As technique.

If you lie to a trooper to push suspicion onto someone else, the state can charge you under RSA 641:4, false reports to law enforcement. Lie under oath in a courtroom and it is RSA 641:1 perjury, a class B felony. Lie to a federal agent about almost anything and you face 18 U.S.C. § 1001 and up to five years in prison. The badge is the thing that flips the rule. The same deception that puts a civilian in a cell is, on the other side of the table, an approved interview method.

The Supreme Court settled this in 1969. In Frazier v. Cupp, a detective falsely told a suspect that his cousin had already confessed. The suspect confessed too. The Court let the confession stand, calling the lie insufficient, in our view, to make this otherwise voluntary confession inadmissible. Courts have read that line as permission ever since. An officer may invent a witness, fake a lab result, or claim a co-defendant has flipped, and the confession that follows is still good in court.

This is not a fringe tactic. The Innocence Project, which has spent three decades documenting wrongful convictions, notes that police deception during interrogation is legal across the United States. The clearest proof that it is real is the fight to limit it. In 2021, Illinois became the first state to bar officers from lying to suspects under 18, and Oregon, California, Colorado, Connecticut, Delaware, Nevada, and Utah followed for minors. For adults it is still legal everywhere. New Hampshire has not restricted it at any age.

The asymmetry, on the record. New Hampshire’s falsification statutes, RSA chapter 641, make it a crime for a civilian to lie under oath (641:1), swear falsely (641:2), file a false written statement to deceive a public servant (641:3), or give false information to a law-enforcement officer (641:4). None of it binds the officer asking the questions. Federal law runs the same way: 18 U.S.C. § 1001 punishes lying to the government, not the government lying to you. Read RSA 641:4 →

So the state runs an honesty filter for a job that comes with a government-issued license to deceive. Hold that contradiction for a second, because it changes how the polygraph reads.

What if the test is selecting for it?

This piece has treated the polygraph as a broken honesty filter. Run the logic the other direction.

The machine does not measure honesty. It measures whether a body stays quiet under questioning, and the National Research Council was blunt that calm is not the same as truth. The job rewards the same quality. An officer who can hold a suspect’s eyes and lie without a flicker, then write the stop up clean and sell it to a jury, is good at the one thing a polygraph cannot catch. Read that way, the composed deceiver is not slipping past the filter. The composed deceiver is what the filter selects.

Here is the uncomfortable reading, and it is an opinion: a device that rewards a steady pulse during deception is a strange instrument to trust as a measure of character, and the people it waves through are not obviously the honest ones. They are the calm ones. In a recruit those are not always the same trait, and the test cannot tell them apart.

The cost is documented. Police perjury is not a hypothetical. The Mollen Commission, New York City’s 1994 panel on police corruption, found lying in sworn testimony and paperwork so routine in some precincts that officers had a word for it: testilying. Fabricated reports were part of the same pattern. And the lies reach verdicts. The Innocence Project reports that false confessions, many of them produced by the legal deception described above, contributed to 29 percent of its 375 DNA exonerations. Those are people who went to prison for crimes they did not commit, in part because someone with a badge was believed.

The same composure that beats a polygraph beats a jury.

This is the stake the academy brochures skip. An officer carries the authority to take your freedom and, in the worst encounters, your life, and then to be the first and loudest narrator of what happened. Put a skilled liar in that role and the danger stops being abstract. The calm that gets a candidate through the polygraph is the same calm that makes a false report read like a true one, and the same calm that can make a fabricated charge stick to someone an officer simply wants gone.

You do not have to look to New York or Illinois for the stakes. In May 2026, Stephen and Renee Legro sued the town of Gilford and three of its police officers in federal court over an arrest at their home during an underage-drinking call on Halloween night. According to the complaint, officers used force that fractured Stephen Legro’s elbow, and an officer told him he was under arrest for refusing a lawful order to give his date of birth, a justification the suit says New Hampshire law does not authorize. Both Legros were charged with disorderly conduct. Both charges were dropped in January 2026. The allegations are unproven, and neither the town nor the officers has been found liable.

That is a municipal case, not a State Police one, and a contested civil claim rather than a finding. But it is the dynamic this piece keeps circling: force applied first, a legal justification offered after, a charge prosecutors then dropped, and an official account a family says did not match what happened in their own doorway. When the officer is the first and loudest narrator, whether the person behind the badge tells the truth is not an abstraction. It is the difference between an honest account and a convenient one. A screening test that cannot tell the honest applicant from the composed one is not the State Police’s problem alone. It is New Hampshire’s.

None of this proves that the New Hampshire State Police want dishonest troopers. It proves something narrower and worse: the instrument they trust to sort the honest from the rest cannot do it, and the trait it does reward, composure under deception, is one the job uses every day. A machine that cannot detect a lie is being used to staff the one profession the law allows to tell them.

Why the test survives at all

If the science is this weak, why does law enforcement still use the polygraph? Part of the answer is law. The Employee Polygraph Protection Act of 1988 banned most private employers from screening workers with the device, a ban Congress passed precisely because of doubts about accuracy and fairness. But the law carves out an exception for federal, state, and local government. The same test an insurance company may not give its own clerks, a police department may require of its recruits.

The other part is utility of a particular kind. The polygraph does not have to detect lies to be useful to an agency. It only has to make applicants confess, and at that it works. The cost is borne by the honest, who disclose and are disqualified, while the disciplined and the rehearsed pass through.

What the state could show — and doesn’t

New Hampshire keeps the numbers that would let the public judge this process for itself. None of it is secret or sensitive. Four sets of records would settle the argument the moment the Division of State Police and the Police Standards and Training Council chose to publish them: the funnel, meaning applicants versus hires for each recent testing cycle, so the actual eligibility rate can be calculated rather than guessed; the cuts by stage, meaning how many candidates are eliminated at the written exam, the fitness test, the background investigation, the polygraph, and the psychological screen; academy attrition, meaning how many recruits enter the 16-week academy and how many graduate; and the polygraph itself, meaning the topics the exam covers, the policy governing it, and how a failed or inconclusive result is weighed against a candidate.

If a large share of disqualifications turn out to come from voluntary admissions at the polygraph stage, the “honesty trap” stops being a theory and becomes a documented fact. If they cluster instead at the criminal-record stage, the concern weakens. Either way the public deserves the answer, and the state is the only party that holds it.

The absurdity scorecard

Add it up. Not the candidate’s score on the test, but the test’s score against common sense. Each line below is scored from 1 to 10 for how far it departs from a process that would reliably identify trustworthy, capable officers, with the reasoning drawn from what is documented above. Call it an editorial verdict, not a peer-reviewed instrument. The facts under each row are not editorial.

What the process doesWhy it’s absurdAbsurdity
Tests honesty with a device that can’t detect itThe National Academy of Sciences found the polygraph has no basis for high accuracy and measures arousal, not deception. It is a lie detector that cannot detect lies.10 / 10
Punishes disclosure, rewards forgettingThe honest candidate who admits a long-ago petty offense is disqualified; the one who forgot it, or hides it well, passes. The test selects for a short memory and a steady pulse.9 / 10
Can be beaten by preparation, not characterTrained countermeasures let about half of test-takers defeat it, and examiners couldn’t tell. The prepared deceiver outperforms the nervous honest applicant.8 / 10
No proportionality on the offense listShoplifting a candy bar shares one undifferentiated, alphabetical, admittedly incomplete list with capital murder and arson, with no stated severity floor or lookback window.9 / 10
Time-travel moralityMarijuana used legally last year in Maine or Massachusetts disqualifies you here. A one-time legal use 11 months ago bars you; years of use that stopped 13 months ago does not. The calendar matters more than the conduct.10 / 10
Demands legal rectitude the law itself can’t deliverCodes too vast for anyone to fully obey, ~30% of Americans arrested by 23, 8% carrying a felony record — yet the screen tests pulse rate, never whether the applicant knows the law.8 / 10
Hides the data that would justify itThe state keeps the applicant funnel, the stage-by-stage cuts, and the polygraph pass rate, and publishes none of it. The public is asked to trust a screen it isn’t allowed to measure.7 / 10
CompositeA hiring screen built on a discredited machine, a calendar-based morality, an unranked catalog of human ordinariness, and undisclosed numbers.61 / 70

Scoring is the author’s editorial judgment. The factual basis for each row is documented and sourced above and in the fact-check table; the 1-to-10 ratings are opinion, offered as argument, not measurement.

The bottom line

New Hampshire holds its troopers to a real standard. The age floor, the education requirement, the felony and domestic-violence bars, the fitness test, those are defensible filters that produce a small and serious pool of candidates. None of that is in question.

The polygraph is different. It is a device the National Academy of Sciences says cannot do the one thing its name promises, embedded in the hiring of the people the state trusts with a badge and a gun. It does not catch the prepared liar. It does catch the nervous truth-teller. The clean claim that it hands the job to psychopaths is a myth. The harder truth underneath it is not: a test that punishes honesty and can be beaten by practice is selecting for something, and “the most forthcoming candidate” is not it.

The state can settle the argument whenever it chooses. It only has to open the file.

— Dexter Dow, Granite State Report

Your Turn

Poll: Should New Hampshire keep screening trooper candidates with a polygraph?
A) Keep it — an imperfect test that pries loose honest admissions still earns its place  ·  B) Keep it, but publish the data — fine to use it if the state shows how many it cuts and where  ·  C) Drop it — a device the National Academy of Sciences won’t vouch for shouldn’t decide who gets a badge

Poll: The science says preparation, not honesty, is what beats a polygraph. Knowing that, what does the test mostly reward?
A) Composure under pressure  ·  B) Whoever studied the countermeasures  ·  C) Whoever volunteers the least  ·  D) Genuine honesty

You tell me: Have you sat for a pre-employment polygraph for a New Hampshire police or public-safety job? What were you asked, what did you disclose, and what happened next? Tell me at granitestatereport@gmail.com — confidentiality respected where possible.

Fact check

#ClaimStatusSource
1Trooper baseline: at least 21 and a U.S. citizen by exam date; uncorrected vision 20/100, correctable to 20/40 near and 20/30 distant.VERIFIEDNH Division of State Police, Requirements & Standards (joinstatepolice.nh.gov).
2Selection order: written exam and agility test same day in Concord, oral board, conditional offer, then polygraph, Director interview, psychological exam, medical exam, drug screen.VERIFIEDNH Division of State Police FAQ (verbatim sequence).
3Automatic disqualifiers: marijuana within 12 months; other controlled substance within 36 (24 if under 21); sale/transport; use in a law-enforcement role; dishonorable discharge; any felony; the broad misdemeanor “character, honesty, or ability” clause.VERIFIEDNH State Police, Automatic Disqualifiers (exact match).
416-week academy in Concord; Cooper-based 35th-percentile fitness test (sit-ups, push-ups, 1.5-mile run); men 18–29 clear 27 push-ups, 37 sit-ups, and a 12:53 run.VERIFIEDNH Police Standards & Training Council; cut-scores in Laconia Daily Sun and Keene Sentinel.
5Officers re-pass the test every three years (RSA 106-L:6, IX; penalty at X). HB 113 (2023) would have repealed it, split the chiefs 62/29/9, and failed; the requirement stands.VERIFIEDRSA 106-L:6; NH Bulletin; LegiScan (HB 113).
6Lautenberg Amendment (18 U.S.C. § 922(g)(9), 1996): permanent firearm ban for a misdemeanor DV conviction; no police/military exception; reaches pre-1996 convictions; extended in 2022 to dating partners.VERIFIEDU.S. DOJ Justice Manual (verbatim “no law enforcement exception”); Bipartisan Safer Communities Act, 2022.
7EPPA (1988, 29 U.S.C. § 2001) bars most private employers from polygraph screening; federal, state, and local government are exempt.VERIFIED29 C.F.R. Part 801 (eCFR); U.S. DOL Fact Sheet #36.
8NRC, The Polygraph and Lie Detection (2003, at the Energy Department’s request): “little basis” for “extremely high accuracy”; responses “not uniquely related to deception”; screening accuracy “almost certainly lower”; false positives among “socially stigmatized groups.”VERIFIEDNational Academies Press (all quotes verbatim).
9APA: no pattern of physiological reactions is unique to deception; an honest person may be nervous, a dishonest one calm.VERIFIEDAmerican Psychological Association statement (verbatim).
10Raskin & Hare (1978): 48 inmates, $20 mock theft, blind examiner; no guilty subject beat the test; “sufficiently aroused or motivated psychopaths are not hyporesponsive.”VERIFIEDPsychophysiology 15(2):126–136; OJP abstract; PubMed.
11Patrick & Iacono (1989): under a realistic group-threat design, “guilty psychopaths were detected just as easily as guilty nonpsychopaths.”VERIFIEDJournal of Applied Psychology 74:347–355 (primary abstract).
122010 review: “psychopaths respond to polygraph testing in a similar manner to other individuals.”VERIFIEDJournal of the American Academy of Psychiatry and the Law 38(4):446 (verbatim).
13Honts, Raskin & Kircher (1994): trained countermeasures (bite tongue, press toes, count backward by 7) let about 50% defeat the test; examiners mostly could not detect them.VERIFIEDJournal of Applied Psychology 79(2):252–259; PubMed.
14The most-cited 1995 survey found large agencies rejected ~25% of applicants on information the polygraph turned up; it was published by a polygraph-industry association.ATTRIBUTEDMeesig & Horvath, Polygraph 24(2):57–136 (American Polygraph Association); three decades old, cited as best available data.
15Police personality research: officers score higher on “fearless dominance” and lower on the impulsive/antisocial facet, and the authors stress the sample is “not classically psychopathic.”VERIFIEDFalkenbach et al. (2018), police-recruit study.
162024 Chicago Police Board case: a recruit was disqualified over college drug use he disclosed during the background interview and polygraph; his lawyer argued the result rewards lying.FILING VERIFIEDPolice Board of the City of Chicago, Case No. 24 AA 26 (board’s own filing). The board’s final disposition could not be independently confirmed; only the disqualification and the argument are reported.
17The NH State Police “Examples of Automatic Disqualifiers” page lists ~180 offenses, alphabetically and labeled “examples,” including shoplifting, willful concealment, simple assault, disorderly conduct, unlawful possession of alcohol, and “receiving unsolicited merchandise,” alongside capital murder and arson.VERIFIEDNH Division of State Police, Examples of Automatic Disqualifiers (page reviewed in full).
18The marijuana disqualifier is “used marijuana within 12 months,” with no exception for use that was legal where it occurred.VERIFIEDNH State Police Automatic Disqualifiers page (verbatim); identical PSTC-directed language on the Portsmouth and Nashua PD sites.
19New Hampshire is the only New England state without legal recreational marijuana; Massachusetts, Maine, and Vermont border it and permit adult use; more than half of all Americans live in a state that has legalized adult use.VERIFIEDSAMHSA 2023 NSDUH (more-than-half figure, verbatim); state legalization status widely documented.
20About 8% of U.S. adults (~19 million) carry a felony conviction.VERIFIEDShannon et al. (2017), Demography 54(5) (UGA/PAA), as of 2010 data.
21Roughly 30% of Americans have been arrested at least once by age 23 (range 25.3%–41.4%; ~30.2% under standard assumptions). An arrest is not a disqualifying conviction.VERIFIEDBrame et al. (2012), Pediatrics 129(1):21–27 (NLSY97).
22In 2023, 15.4% of Americans aged 12+ (43.6 million) used marijuana in the past month; the disqualifier’s window is a full year, so the disqualifying share is larger.VERIFIEDSAMHSA, 2023 National Survey on Drug Use and Health.
23Legal scholars describe modern codes as so broad that ordinary people unknowingly commit crimes; “three felonies a day” is the popularized framing.ATTRIBUTEDHarvey Silverglate, Three Felonies a Day (2009) — cited as a documented thesis/argument, not a measured statistic.
24In Frazier v. Cupp (1969) the U.S. Supreme Court held that a detective’s lie to a suspect (falsely claiming a co-defendant had confessed) did not by itself make the resulting confession inadmissible; later courts treat it as authorizing deception during interrogation.VERIFIEDFrazier v. Cupp, 394 U.S. 731 (1969).
25Police deception during interrogation is legal across the United States. Illinois (2021) was the first state to bar it when questioning minors; Oregon, California, Colorado, Connecticut, Delaware, Nevada, and Utah followed for minors. It remains legal for adults, and New Hampshire is not among the states that have restricted it.VERIFIEDInnocence Project (legality of interrogation deception; state juvenile-deception bans).
26False confessions, many obtained through legally permitted deception, contributed to 29% of the Innocence Project’s 375 DNA exonerations.ATTRIBUTEDInnocence Project (organization’s own case data; figure as published).
27The Mollen Commission, New York City’s 1994 panel on police corruption, found police falsification in sworn testimony and reports so common in some precincts that officers called it “testilying.”VERIFIEDMollen Commission Report (NYC, 1994); corroborated by the National Registry of Exonerations.
28For civilians, lying to officials is a crime: NH RSA 641:1 perjury (class B felony), 641:2 false swearing, 641:3 unsworn falsification, 641:4 false reports to law enforcement; federally, 18 U.S.C. § 1001. None of these bind the officer conducting an interrogation.VERIFIEDNH RSA chapter 641; 18 U.S.C. § 1001.
29In May 2026, Stephen and Renee Legro filed a federal civil-rights suit against the town of Gilford and three of its police officers over a Halloween underage-drinking call, alleging excessive force and an arrest the complaint says lacked a lawful basis (an officer citing refusal to give a date of birth); both were charged with disorderly conduct and both charges were dropped in January 2026.ATTRIBUTEDConcord Monitor (May 24, 2026), reporting the federal complaint. The filing and the dropped charges are confirmed; the underlying allegations are unproven and unadjudicated.
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Sources. NH Division of State Police recruitment, hiring-process, and disqualifier pages (joinstatepolice.nh.gov); NH Police Standards & Training Council fitness rules (Pol 404.07; RSA 106-L:6) and HB 113 (2023); 18 U.S.C. § 922(g)(9) and the U.S. DOJ Justice Manual; EPPA / 29 U.S.C. § 2001 and DOL Fact Sheet #36; National Research Council, The Polygraph and Lie Detection (2003); American Psychological Association statement on polygraph testing; Raskin & Hare (1978) Psychophysiology 15:126–136; Patrick & Iacono (1989) J. Applied Psychology 74:347–355; Honts, Raskin & Kircher (1994) J. Applied Psychology 79:252–259; J. Am. Acad. Psychiatry & Law 38(4):446 (2010); Meesig & Horvath (1995) Polygraph 24(2):57–136; Falkenbach et al. (2018) on psychopathic traits in police recruits; Police Board of the City of Chicago, Case No. 24 AA 26 (2024). National prevalence data (illustration): Shannon et al. (2017), Demography; Brame et al. (2012), Pediatrics; SAMHSA, 2023 NSDUH. Overcriminalization: Harvey Silverglate, Three Felonies a Day (Encounter Books, 2009). Police deception and the law: Frazier v. Cupp, 394 U.S. 731 (1969); Innocence Project on the legality of interrogation deception and state bans on deceiving minors; false-confession share of DNA exonerations (Innocence Project); Mollen Commission (NYC, 1994) on police perjury; New Hampshire falsification statutes RSA 641 and 18 U.S.C. § 1001. New Hampshire example: Stephen and Renee Legro’s federal civil-rights complaint against the town of Gilford and three police officers (U.S. District Court, D.N.H., May 2026), as reported by the Concord Monitor; allegations unproven. Related GSR coverage: Half a Million and Climbing · The $4-a-Gallon Senate Race · GSR Editorial Standards.

Editor’s note. Every factual claim above was verified against primary sources before publication; see the fact-check table. This piece relies on documentary and published sources rather than original interviews — a limitation flagged here rather than hidden. A few items carry caveats. The 1995 disqualification-rate figure is three decades old and was produced by a polygraph-industry association, cited as the best available data rather than current fact. The final disposition of the 2024 Chicago Police Board appeal could not be independently confirmed, so only the disqualification and the applicant’s argument, drawn from the board’s own filing, are reported. New Hampshire’s applicant-funnel statistics are not published on any state website; the eligibility discussion stacks real national prevalence figures as an explicit illustration and does not claim a precise New Hampshire rate. The absurdity scorecard’s 1-to-10 ratings are the author’s editorial judgment; the facts under each row are sourced, the scores are opinion. Corrections: Granite State Report corrects verified errors promptly and appends a note identifying what changed and when.

Granite State Report · Northfield, New Hampshire · granitestatereport.com

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