How barriers become invisible: Children are less sensitive to constraints that are stable over time.

When making inferences about the mental lives of others (e.g., others' preferences), it is critical to consider the extent to which the choices we observe are constrained. Prior research on the development of this tendency indicates a contradictory pattern: Children show remarkable sensitivity to constraints in traditional experimental paradigms, yet often fail to consider real-world constraints and privilege inherent causes instead. We propose that one explanation for this discrepancy may be that real-world constraints are often stable over time and lose their salience. The present research tested whether children (N = 133, 5- to 12-year-old mostly US children; 55% female, 45% male) become less sensitive to an actor's constraints after first observing two constrained actors (Stable condition) versus after first observing two actors in contexts with greater choice (Not Stable condition). We crossed the stability of the constraint with the type of constraint: either the constraint was deterministic such that there was only one option available (No Other Option constraint) or, in line with many real-world constraints, the constraint was probabilistic such that there was another option, but it was difficult to access (Hard to Access constraint). Results indicated that children in the Stable condition became less sensitive to the probabilistic Hard to Access constraint across trials. Notably, we also found that children's sensitivity to constraints was enhanced in the Not Stable condition regardless of whether the constraint was probabilistic or deterministic. We discuss implications for children's sensitivity to real-world constraints. RESEARCH HIGHLIGHTS: This research addresses the apparent contradiction that children are sensitive to constraints in experimental paradigms but are often insensitive to constraints in the real world. One explanation for this discrepancy is that constraints in the real world tend to be stable over time and may lose their salience. When probabilistic constraints (i.e., when a second option is available but hard to access) are stable, children become de-sensitized to constraints across trials. First observing contexts with greater choice increases children's sensitivity to both probabilistic and deterministic constraints.

Lying to recommend unqualified friends: Diverging implications for interpersonal and epistemic trust inferences.

When people are asked to recommend individuals they care about, they often grapple with conflicts regarding the level of honesty they should maintain when being truthful could potentially hinder those individuals' chances of receiving beneficial opportunities. In the current study, we examined how adolescents evaluate people based on how they respond to such dilemmas, with a focus on how it affects judgments of interpersonal and epistemic trustworthiness. We tested a sample of high school students in the southwestern United States (N = 78; Mage = 16.45 years), who were asked about a moral dilemma in which a story character needed to decide whether to recommend an unqualified friend. We experimentally manipulated whether the friend was very close to the standard (requiring a small exaggeration) or was far from the standard (requiring a large exaggeration) between participants. Across both exaggeration conditions, we observed a dissociation in judgments of epistemic and interpersonal trustworthiness: Lie-tellers were judged to be more interpersonally trustworthy than epistemically trustworthy, whereas truth-tellers were judged to be more epistemically trustworthy than interpersonally trustworthy. These results show that adolescents are capable of using information about an individual's lie-telling versus truth-telling decisions to make highly nuanced social inferences.

Don't be a rat: An investigation of the taboo against reporting other students for cheating.

This research examines barriers to reporting academic dishonesty in early adulthood (Study 1; N = 92) and adolescence (Study 2; N = 137). Participants were asked to describe a recent time they observed a peer cheating and to reflect on their decision about whether to report the cheating. They also responded to hypothetical scenarios about observing typical cheating actions, and the presence of social motives (e.g., whether people who report tend to gain reputations for being snitches) was manipulated in each scenario. Even though participants judged reporting to be the morally right thing to do, doing so was rare and approval for it was low, especially in adolescence. Participants also tended to say they would rather be friends with people who do not report cheaters than with those who do. Participants reasoned about a variety of social concerns to support their judgments about reporting (e.g., concern about their relationship with the cheater, concerns for others' welfare), and the manipulated social motives in the hypothetical scenarios significantly influenced judgments about reporting. These findings inform our understanding of the social dynamics that contribute to decisions about policing academic honesty.

If They Won't Know, I Won't Wait: Anticipated Social Consequences Drive Children's Performance on Self-Control Tasks.

This research evaluated the hypothesis that the act of offering an incentive produces anticipated social benefits that are distinct from the benefits associated with the incentive itself. Across three preregistered studies, 3- to 5-year-old children in China (total N = 210) were given an opportunity to wait for an additional sticker (Studies 1 and 3) or an edible treat (Study 2). Rewards were dispensed via a timer-controlled box that allowed the experimenter's apparent ability to learn how long children waited to be manipulated experimentally. Children waited only about half as long when they believed the experimenter would not find out how long they waited. When children were offered three prizes for waiting, anticipated social benefits still drove behavior at least as much as the reward. The findings demonstrate that children as young as 3 years are sensitive to anticipated social rewards when responding to offers of incentives.

Children can represent complex social status hierarchies: Evidence from Indonesia.

Children's ethnicity-status associations are often studied in societies where one ethnic group possesses status across multiple dimensions, such as political influence and wealth. This study examined children's (6-12 years) and adults' representations of more complex hierarchies in Indonesia (N = 341; 38% Native Indonesian, 33% Chinese Indonesian, and 27% other ethnicities; 55% female, 36% male; 2021-2022), a society where ethnic groups hold distinct forms of status (on average, Native Indonesians have political influence; Chinese Indonesians have wealth). By 6.5 years, children associated Native Indonesians with political influence and Chinese Indonesians with wealth. Intersectional analyses indicated that ethnicity-status associations were stronger for male than female targets. Children of all ethnicities preferred Chinese Indonesians and preferences were predicted by wealth judgments.

Cheating among elementary school children: A machine learning approach.

Academic cheating is common, but little is known about its early emergence. It was examined among Chinese second to sixth graders (N = 2094; 53% boys, collected between 2018 and 2019) using a machine learning approach. Overall, 25.74% reported having cheated, which was predicted by the best machine learning algorithm (Random Forest) at a mean accuracy of 81.43%. Cheating was most strongly predicted by children's beliefs about the acceptability of cheating and the observed prevalence and frequency of peer cheating at school. These findings provide important insights about the early development of academic cheating, and how to promote academic integrity and limit cheating before it becomes entrenched. The present research demonstrates that machine learning can be effectively used to analyze developmental data.

The profit motive: Implications for children's reasoning about merit-based resource distribution.

How to distribute resources in a fair way is a fundamental source of conflict in human societies. A central dilemma that people begin to grapple with during childhood is the extent to which individuals should be rewarded based on merit at the expense of equality. The current study examined children's reasoning about this dilemma by testing whether they are sensitive to information about the motives of highly productive people when determining whether they should receive extra compensation. Across two studies, children (6- to 11-year-olds, total N = 143) judged high performers to be less deserving of extra resources when they were motivated by profit rather than being intrinsically motivated, and this pattern was more pronounced among the older children. The findings demonstrate that, with age, children increasingly consider motives when deciding whether productivity should be rewarded and that the tendency of adults to view profit motives as problematic has origins during childhood.

Academic cheating interferes with learning among middle school children.

There has been extensive research on the causes of academic cheating, but little is known about its consequences. The current research sought to fill this gap in the literature by examining how cheating by middle school children (total N = 198) affects their learning outcomes. In a naturalistic paradigm, children scored a math test they had taken previously, which gave them an opportunity to cheat by falsely scoring incorrect answers to be correct. Results from this phase showed that 54 % of the children cheated on at least one question. One week later, the children took the same test again, but this time without being given an opportunity to cheat. Among children who cheated, items they had answered incorrectly on the first round showed significantly less improvement on the second round if they had dishonestly scored them as correct rather than honestly scoring them as incorrect. This finding provides the first experimental evidence that academic cheating can interfere with children's learning.

The moral barrier effect: Real and imagined barriers can reduce cheating.

This research presents a nudge-based approach to promoting honest behavior. Specifically, we introduce the moral barrier hypothesis, which posits that moral violations can be inhibited by the introduction of spatial boundaries, including ones that do not physically impede the act of transgressing. We found that, as compared to a no barrier condition, children cheated significantly less often when a barrier was strategically placed to divide the space where children were seated from a place that was associated with cheating. This effect was seen both when the barrier took a physical form and when it was purely symbolic. However, the mere presence of a barrier did not reduce cheating: if it failed to separate children from a space that was associated with cheating, children cheated as much as when there was no barrier at all. Taken together, these findings support the moral barrier hypothesis and show that even seemingly unremarkable features of children's environments can nudge them to act honestly.

Young children form generalized attitudes based on a single encounter with an outgroup member.

The goal of the present research was to assess whether children's first interaction with a single outgroup member can significantly impact their general attitudes toward the outgroup as a whole. In two preregistered studies, 5- to 6-year-old Chinese children (total N = 147) encountered a Black adult from another country for the very first time, and they played a game together. General attitudes toward the outgroup were assessed using both implicit and explicit measures. In both studies, the interaction resulted in less negative explicit attitudes toward Black people, but more negative implicit attitudes. The results demonstrate for the first time that one encounter with a single outgroup member can impact children's general attitudes toward that group, and that it can have differential effects on implicit and explicit attitudes.

Subtle alterations of the physical environment can nudge young children to cheat less.

Cheating is a common human behavior but few studies have examined its emergence during early childhood. In three preregistered studies, a challenging math test was administered to 5- to 6-year-old children (total N = 500; 255 girls). An answer key was present as children completed the test, but they were instructed to not peek at it. In Study 1, many children cheated, but manipulations that reduced the answer key's accessibility in terms of proximity and visibility led to less cheating. Two follow-up studies showed that the answer key's visibility played a more significant role than its proximity. These findings suggest that subtle and seemingly insignificant alterations of the physical environment can effectively nudge young children away from acting dishonestly.

Children acknowledge physical constraints less when actors behave stereotypically: Gender stereotypes as a case study.

A fundamental part of understanding structural inequality is recognizing that constrained choices, particularly those that align with societal stereotypes, are poor indicators of a person's desires. This study examined whether children (N = 246 U.S. children, 53% female; 61% White, 24% Latinx; 5-10 years) acknowledge constraints in this way when reasoning about gender-stereotypical choices, relative to gender-neutral and gender-counterstereotypical choices. Results indicated that children more frequently inferred preferences regardless of whether the actor was constrained when reasoning about gender-stereotypical choices, as compared to gender-neutral or gender-counterstereotypical choices. We also found evidence of an age-related increase in the general tendency to acknowledge constraints. We discuss the broader implications of these results for children's understanding of constraints within society.

Overheard evaluative comments: Implications for beliefs about effort and ability.

This research examined the effects of overhearing an adult praise an unseen child for not needing to work hard on an academic task. Five-year-old Han Chinese children (total N = 270 across three studies; 135 boys, collected 2020-2021) who heard this low effort praise tended to devalue effort relative to a baseline condition in which the overheard conversation lacked evaluative content. In Study 3, low effort praise increased children's endorsement of essentialist beliefs about ability and their interest in becoming the kind of person who does not need to work hard to succeed. The findings show that overhearing evaluative comments about other people, a pervasive feature of daily life, can have a systematic effect on young children's beliefs about achievement.

Messaging about descriptive and injunctive norms can promote honesty in young children.

This research examined the effectiveness of using norms to promote honesty. Participants were Han Chinese children (N = 568, 50.4% male, 3.24 to 6.00 years, collected 2020-2022). Relative to children in a control condition, children in Study 1 were more likely to confess to having cheated in a game after being presented with a descriptive norm indicating that confessions are typical, or an injunctive norm indicating that most other children approve of confessing. Study 2 showed that this finding was not due to a methodological artifact, and Study 3 replicated the effect in a context in which the norm information was conveyed by someone other than the experimenter. The findings suggest that messages about social norms can influence children's honesty.

The developmental origins of a default moral response: A shift from honesty to dishonesty.

People are sometimes tempted to lie for their own benefit if it would not harm others. For adults, dishonesty is the default response in these circumstances. The developmental origins of this phenomenon were investigated between 2019 and 2021 among 6- to 11-year-old Han Chinese children from China (N = 548, 49% female). Children had an opportunity to win prizes in a behavioral economics game (Experiment 1) or a temptation resistance game adapted from developmental psychology (Experiment 2). In each experiment, the youngest children showed a default tendency of honesty and there was an overall age-related shift toward a default tendency of dishonesty. These findings provide direct evidence of developmental change in the automatic and controlled processes that underlie moral behavior.

Effects of test difficulty messaging on academic cheating among middle school children.

Academic cheating is a serious worldwide problem that begins during childhood. However, to date there has been little research on academic cheating with children before high school age. The current study used a naturalistic experimental paradigm to evaluate the possibility that systematically manipulating messages about the difficulty of a test can affect whether middle school children (N = 201) would cheat by reporting a falsely inflated test score. We found that test difficulty messaging significantly affected children's cheating behavior. Specifically, telling children that a test was either easy or hard produced higher rates of cheating than telling them that the difficulty level was on par with their current skills. In addition, among the children who chose to cheat, telling them that the test was easy led to a greater degree of cheating. These findings are consistent with theories of academic cheating that point to the importance of approach and avoidance motives in achievement motivation. The findings also suggest that simple messaging can have a significant impact on children's moral behavior and that seemingly innocuous messages such as describing the difficulty of a test can influence children's decisions about whether and how much to cheat.

Context shapes early diversity in abstract thought.

Early abstract reasoning has typically been characterized by a "relational shift," in which children initially focus on object features but increasingly come to interpret similarity in terms of structured relations. An alternative possibility is that this shift reflects a learned bias, rather than a typical waypoint along a universal developmental trajectory. If so, consistent differences in the focus on objects or relations in a child's learning environment could create distinct patterns of relational reasoning, influencing the type of hypotheses that are privileged and applied. Specifically, children in the United States may be subject to culture-specific influences that bias their reasoning toward objects, to the detriment of relations. In experiment 1, we examine relational reasoning in a population with less object-centric experience-3-y-olds in China-and find no evidence of the failures observed in the United States at the same age. A second experiment with younger and older toddlers in China (18 to 30 mo and 30 to 36 mo) establishes distinct developmental trajectories of relational reasoning across the two cultures, showing a linear trajectory in China, in contrast to the U-shaped trajectory that has been previously reported in the United States. In a third experiment, Chinese 3-y-olds exhibit a bias toward relational solutions in an ambiguous context, while those in the United States prefer object-based solutions. Together, these findings establish population-level differences in relational bias that predict the developmental trajectory of relational reasoning, challenging the generality of an initial object focus and suggesting a critical role for experience.

Effects of Trust and Threat Messaging on Academic Cheating: A Field Study.

Morality-based interventions designed to promote academic integrity are being used by educational institutions around the world. Although many such approaches have a strong theoretical foundation and are supported by laboratory-based evidence, they often have not been subjected to rigorous empirical evaluation in real-world contexts. In a naturalistic field study (N = 296), we evaluated a recent research-inspired classroom innovation in which students are told, just prior to taking an unproctored exam, that they are trusted to act with integrity. Four university classes were assigned to a proctored exam or one of three types of unproctored exam. Students who took unproctored exams cheated significantly more, which suggests that it may be premature to implement this approach in college classrooms. These findings point to the importance of conducting ecologically valid and well-controlled field studies that translate psychological theory into practice when introducing large-scale educational reforms.

Overheard conversations can influence children's generosity.

Understanding the factors that promote the development of generosity has both theoretical and practical importance. This study examines one potential influence: overheard conversations that contain evaluative statements about the behavior of others that were described as widely shared opinions. In Study 1 (N = 120), younger (mean age 4.1 years old) and older (mean age 5.9 years old) participants overheard two adults discuss a target child's act of generosity, and in a between-subjects manipulation, the conversation included either praise for the target child, or criticism. Participants in the older group were more likely to behave generously on a distribution task if the overheard conversation involved praise rather than criticism, but the participants in the younger group showed no such effect. Study 2 (N = 150) and Study 3 (N = 60) were preregistered follow-up studies that included older children only (a 5-year-old group). Study 2 showed that children were again more likely to share after overhearing a conversation in which an individual who behaved generously was described in favorable terms, and the same effect was seen when the overheard conversation involved criticism of an individual who did not share. The procedure of Study 3 matched that of Study 1, except the distributions were made in private, and the overheard conversation effect was seen once again. These findings suggest that by age 5, children can use information they hear about individuals who are not present to guide their own behavior, and that overheard evaluative comments can promote generosity.

Using environmental nudges to reduce academic cheating in young children.

Previous research on nudges conducted with adults suggests that the accessibility of behavioral options can influence people's decisions. The present study examined whether accessibility can be used to reduce academic cheating among young children. We gave children a challenging math test in the presence of an answer key they were instructed not to peek at, and manipulated the accessibility of the answer key by placing various familiar objects on top of it. In Study 1, we used an opaque sheet of paper as a two-dimensional occluder, and found that it significantly reduced cheating compared to a transparent plastic sheet. In Study 2, we used a three-dimensional occluder in the form of a tissue box to make the answer key appear even less accessible, and found it was significantly more effective in reducing cheating than the opaque paper. In Study 3, we used two symbolic representations of the tissue box: a realistic color photo and a line drawing. Both representations were effective in reducing cheating, but the realistic photo was more effective than the drawing. These findings demonstrate that manipulating accessibility can be an effective strategy to nudge children away from cheating in an academic context. They further suggest that different types of everyday objects and their symbolic representations can differentially impact children's moral behavior.