Y12W36VC The honest experiment on honesty

You find a wallet on the ground. There's no one around. The wallet contains some ID and some cash. What would you do? Now — does your answer change if the wallet has $5 in it versus $100? Standard economic theory predicts people would return wallets less often when there's more money inside. In 2019, three researchers ran the largest real-world experiment on honesty ever conducted. This week's article examines what they found.

Core Vocabulary

counterintuitive

/ˌkaʊn.tər.ɪnˈtuː.ɪ.tɪv/|coun.ter.in.tu.i.tive

adjective

Contrary to what intuition or immediate understanding would predict; surprising because it conflicts with ordinary expectations about how things work.

Word Breakdown: counter- (against) + intuitive (understood immediately)

Word family: counterintuitively (adv.), counterintuitiveness (n.)

Synonyms: surprising, unexpected, paradoxical

Collocations: counterintuitive finding, counterintuitive result, seem counterintuitive

Example: The research finding that people return expensive wallets more often is counterintuitive because standard economic theory predicts the opposite.

In the articleIt is intuitive that people would be less honest when more money is at stake, but the data contradicts this intuition.

discrepancy

/dɪˈskrɛp.ən.si/|dis.crep.an.cy

noun

A lack of agreement or consistency between two things; a difference or inconsistency that is noticeable and often problematic.

Word Breakdown: dis- (apart) + -crepancy (disagreement)

Word family: discrepant (n.)

Synonyms: inconsistency, divergence, gap

Collocations: significant discrepancy, discrepancy between, notable discrepancy

Example: The discrepancy between economic theory and empirical findings suggests that honesty is more complex than simple self-interest.

In the articleThe gap between what economic theory predicts and what actually happens reveals a significant discrepancy.

prediction

/prɪˈdɪk.ʃən/|pre.dic.tion

noun

A statement about what is expected to happen in the future based on theory, evidence, or analysis. Predictions are tested against actual outcomes.

Word Breakdown: pre- (before) + -diction (saying)

Word family: predict (n.), predictable (n.)

Synonyms: forecast, projection, hypothesis

Collocations: economic prediction, make a prediction, prediction fails

Example: The prediction that people would keep expensive wallets proved incorrect; they were actually more likely to return them.

In the articleStandard economic theory predicts people would return wallets less often when there's more money inside.

robust

/roʊˈbʌst/|ro.bust

adjective

Strongly supported by evidence; able to withstand scrutiny or challenge; not easily overturned or disproved. In research, robust findings are reliable and consistent.

Word family: robustly (adv.), robustness (n.)

Synonyms: strong, solid, well-supported

Collocations: robust evidence, robust findings, robust result

Example: The honesty experiment's robust finding across 40 countries suggests that identity-based preferences for honesty are universal.

In the articleThe researchers ran the study across 40 different countries, making their findings more robust and generalisable.

identifying

/aɪˈdɛn.tɪ.faɪ.ɪŋ/|i.den.ti.fy.ing

adjective

Serving to distinguish or recognise something as a particular thing or person; characteristic enough to allow recognition or pinpointing.

Word Breakdown: ident- (same) + -ifying (making)

Word family: identify (n.), identification (n.)

Synonyms: distinctive, characteristic, recognisable

Collocations: identifying information, identifying feature, identifying mark

Example: The wallets in the study contained identifying information like ID, which activated honesty because returning the wallet meant contacting the actual person.

In the articleThe wallet in their study contained some ID and some cash.

rationale

/ræʃ.əˈnæl/|ra.tion.ale

noun

The fundamental reason or reasoning behind an action, belief, or decision. A rationale explains the logic or purpose of something.

Word Breakdown: ration- (reason) + -ale (reason for)

Word family: rationalise (n.)

Synonyms: reason, reasoning, logic

Collocations: the rationale for, underlying rationale, provide a rationale

Example: The rationale for the study was to test whether economic self-interest truly motivates behaviour or whether other factors, like identity, matter more.

In the articleThe rationale behind identity-based preferences is that people care about how they see themselves.

systematic

/sɪsˈtɛm.ət.ɪk/|sys.tem.at.ic

adjective

Following a planned, organised approach; done according to a system or method; regular and methodical rather than haphazard.

Word Breakdown: system- (arrangement) + -atic (relating to)

Word family: systematically (adv.), system (n.)

Synonyms: methodical, organised, orderly

Collocations: systematic approach, systematic review, systematic analysis

Example: The study employed a systematic research design, testing honesty across 40 countries with identical protocols.

In the articleThe researchers conducted a systematic, cross-cultural experiment on honesty.

cross-cultural

/ˌkrɔːsˈkʌl.tʃər.əl/|cross.cul.tur.al

adjective

Relating to or comparing two or more distinct cultures. Cross-cultural research tests whether findings generalise across cultural boundaries.

Word Breakdown: cross- (across) + cultural (relating to culture)

Word family: cross-culturally (adv.)

Synonyms: intercultural, multicultural

Collocations: cross-cultural study, cross-cultural research, cross-cultural comparison

Example: The cross-cultural nature of the honesty study across 40 countries showed that identity-based honesty is not limited to one culture.

In the articleThe 2019 wallet study tested honesty across 40 different countries.

Technical Terms

the wallet experiment

/ðə ˈwɒl.ɪt ɪkˈspɛr.ɪ.mənt/|the.wal.let.ex.per.i.ment

noun

Cohn and Maréchal's 2019 global field experiment testing honesty by leaving wallets with varying amounts of cash in public places across 40 countries. The study found that wallets with more money were returned more often, contradicting economic predictions.

Synonyms: honesty experiment, civic honesty study

Collocations: the wallet experiment found, in the wallet experiment, the wallet experiment showed

Example: The wallet experiment was groundbreaking because it tested honesty in real-world conditions rather than laboratory scenarios.

In the articleIn 2019, three researchers ran the largest real-world experiment on honesty ever conducted.

civic honesty

/ˈsɪv.ɪk ˈɒn.ə.sti/|civ.ic.hon.es.ty

noun

The tendency to act honestly in everyday interactions with strangers in public contexts. Civic honesty reflects whether ordinary people behave ethically toward unknown others outside formal or relational contexts.

Synonyms: public honesty, everyday honesty

Collocations: measure civic honesty, civic honesty across cultures, civic honesty levels

Example: The wallet experiment measured civic honesty by observing whether strangers would return found wallets to their owners.

In the articleThe study examined civic honesty—whether ordinary people return wallets with money to strangers.

economic rationality

/ˌɛk.əˈnɒm.ɪk ræʃ.əˈnæl.ɪ.ti/|e.con.o.mic.ra.tion.al.i.ty

noun

The standard economic assumption that people act to maximise their own self-interest and material benefit; the theory that behaviour is driven by rational calculation of personal gain.

Synonyms: self-interested behaviour, rational egoism

Collocations: assume economic rationality, economic rationality predicts, contradict economic rationality

Example: Economic rationality would predict that people ignore wallets with small amounts of money, but the study found the opposite.

In the articleStandard economic theory predicts people would return wallets less often when there's more money inside.

identity-based preferences

/aɪˈdɛn.tɪ.ti ˈbeɪst ˈprɛf.ər.ənsɪz/|i.den.ti.ty.based.pref.er.en.ces

noun

The idea that honesty serves the goal of maintaining a positive self-image rather than being motivated solely by material self-interest. People act honestly partly because they want to see themselves as good people.

Synonyms: identity motivation, self-image preference

Collocations: identity-based preferences explain, identity-based preferences matter, driven by identity-based preferences

Example: Identity-based preferences suggest that people return wallets to feel good about themselves, not just for reward.

In the articleThe research points to identity-based preferences: people care about being honest because it aligns with their self-image as good people.

p-hacking

/ˈpiː ˈhæk.ɪŋ/|p.hack.ing

noun

Selectively analysing data until statistical significance appears; a form of research fraud where researchers manipulate analysis to achieve desired results rather than reporting genuine findings. P-hacking undermines research integrity.

Word family: p-hack, p-hacked

Synonyms: data mining, HARKing, research fraud

Collocations: accused of p-hacking, avoid p-hacking, p-hacking practices

Example: Good research design, like the wallet study's pre-registered protocols, guards against p-hacking.

In the articleThe integrity of large-scale research depends on transparent methodology that prevents p-hacking.

Figurative Phrases

come clean

To admit the truth; to confess or reveal what one has been hiding. The phrase uses 'clean' figuratively to mean pure or honest.

Etymology/Type: idiomatic

Synonyms: confess, admit, tell the truth

Example: In the wallet experiment, people who kept the money failed to come clean about their dishonesty.

In the articleHonesty in the experiment meant coming clean by returning the wallet.

a straight answer

An honest, direct response without evasion or complication. 'Straight' is used figuratively to mean direct and honest.

Etymology/Type: idiomatic

Synonyms: honest answer, direct response

Example: The wallet experiment gives a straight answer to the question: do people prioritise self-interest over honesty?

In the articleThe research provides a straight answer to economic predictions about human behavior.

hands in the till

Stealing from an employer or organisation; dishonest appropriation of funds. 'Till' refers to a cash register or money box.

Etymology/Type: idiomatic

Synonyms: embezzlement, stealing, dishonesty

Example: The wallet experiment tests everyday honesty, not major crimes like having your hands in the till.

In the articleCivic honesty is about small decisions, not large-scale theft.

above board

Legitimate, honest, and transparent; operating openly and fairly without hidden motives. The phrase has nautical origins but is purely figurative.

Etymology/Type: idiomatic

Synonyms: legitimate, honest, transparent

Example: The wallet study's methodology is completely above board, making its findings more credible.

In the articleTransparent research design ensures findings are above board and trustworthy.

the honour system

A trust-based arrangement where people are expected to behave honestly without external enforcement or monitoring. The phrase assumes intrinsic motivation to do right.

Etymology/Type: idiomatic

Synonyms: trust-based system, voluntary honesty

Example: The wallet experiment mimics the honour system—wallets are found with no authority to enforce return.

In the articleThe experiment tests whether people maintain honesty on the honour system.

stick to the truth

To remain honest and maintain truthfulness despite pressure or temptation. 'Stick' is used figuratively to mean maintain or adhere to.

Etymology/Type: idiomatic

Synonyms: remain honest, tell the truth, be truthful

Example: The study found that people tend to stick to the truth even when dishonesty would benefit them financially.

In the articleReturning wallets is a way of sticking to the truth about one's identity as an honest person.

Confusing Words

counterintuitive vs. contrarian

These terms are related but distinct: counterintuitive describes something that contradicts immediate understanding, while contrarian describes something that contradicts prevailing views.

  • counterintuitive [contrary to what intuition or immediate understanding would predict] — It is counterintuitive that people return expensive wallets more often — intuition suggests they'd keep the money.
  • contrarian [opposed to or rejecting prevailing opinion or consensus] — The research finding was contrarian because it challenged the dominant economic theory about self-interest.

Counterintuitive = against intuition (immediate gut feeling); Contrarian = against consensus (prevailing view). Something can be both: the wallet study contradicts intuition (counterintuitive) and economic theory (contrarian).

discrepancy vs. disparity

These near-synonyms both describe differences, but discrepancy emphasises inconsistency while disparity emphasises inequality.

  • discrepancy [a lack of agreement or inconsistency between two things] — The discrepancy between economic theory and the research findings revealed that human behaviour is more complex than the theory predicts.
  • disparity [inequality or significant difference, especially in distribution or treatment] — The disparity in error rates across racial groups showed the algorithm treated groups unequally.

Discrepancy = mismatch/inconsistency (between theory and reality); Disparity = inequality/unequal distribution (between groups). Ask: Is this about conflicting expectations (discrepancy) or unequal outcomes (disparity)?

prediction (forecast) vs. prediction (hypothesis)

This word has two distinct senses: a forecast of what will happen, or a hypothesis about underlying causes or patterns.

  • prediction (forecast) [a statement about what is expected to happen in the future based on evidence] — The economic prediction was that people would keep expensive wallets — a forecast of expected behaviour.
  • prediction (hypothesis) [a proposed scientific explanation that is tested through observation] — A prediction in this sense is a testable claim about how honesty works — for example, that identity-based preferences drive honesty.

Prediction (forecast) = what will happen (data-driven expectation); Prediction (hypothesis) = why something happens (theory to be tested). In research, both are predictions but serve different roles.