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A popular topic in developmental science is self-regulation, an aspect of functioning viewed as contributing to optimal development. Of particular theoretical importance is top-down (frontal cortically based) self-regulation (TDSR). This article briefly reviews recent research on TDSR's relation to four areas of development: maladjustment, social competence, prosocial development, and academic development. Recent studies on the topic often involve sophisticated methods and designs; moreover, several relevant meta-analyses have been published in the recent past. In general, a higher level of TDSR has been associated with better adjustment, social competence, prosociality, and success in the school setting. Limitations in the research and extant meta-analyses are briefly noted.
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INTRODUCTION: Existing research highlights the significance of prosocial behavior (voluntary, intentional behavior that results in benefits for another) to people's well-being. Yet, the extent to which this expected positive relation operates at the within-person level (e.g., is more prosocial behavior than usual related to a higher than usual level of well-being?) while taking into account stable interindividual differences, remains a research question that deserves further investigation. In this study, we aimed to explore the relations between prosocial behavior and hedonic (HWB; subjective assessment of life satisfaction and happiness) and eudaimonic (EWB; actualization of human potential in alignment with personal goals, including concepts like meaning in life and closeness to others) well-being in daily life. METHOD: Using ecological momentary assessment for 4 weeks, data were collected from two British samples, comprising 82 adolescents and 166 adults. RESULTS: Dynamic Structural Equation Modeling revealed a positive relations between prosocial behavior and HWB/EWB at both between and within-person levels across the samples. CONCLUSION: In summary, these findings further support the positive link between prosocial behavior and well-being in everyday life. Notably, this association was consistent across different age groups (adolescent and adults) at both between and within-person levels.
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The field of developmental psychopathology tends to focus on the negative aspects of functioning. However, prosocial behavior and empathy-related responding - positive aspects of functioning- might relate to some aspects of psychopathology in meaningful ways. In this article, we review research on the relations of three types of developmental psychopathology- externalizing problems (EPs), internalizing problems (IPs), and Autism Spectrum Disorder (ASD) - to empathy-related responding (e.g., affective and cognitive empathy, sympathy, personal distress) and prosocial behavior. Empathy-related responding and prosocial behavior generally have been inversely related to EPs, although findings are sometimes reversed for young children and, for empathy, weak for reactive aggression. Some research indicates that children's empathy (often measured as emotional contagion) and personal distress are positively related to IPs, suggesting that strong sensitivity to others' emotions is harmful to some children. In contrast, prosocial behaviors are more consistently negatively related to IPs, although findings likely vary depending on the motivation for prosocial behavior and the recipient. Children with ASD are capable of prosocially and empathy-related responding, although parents report somewhat lower levels of these characteristics for ASD children compared to neurotypical peers. Issues in regard to measurement, motivation for prosociality, causal relations, and moderating and mediating factors are discussed.
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Research suggests that parental substance use disorder is associated with adolescent drinking indirectly through negative urgency, a form of impulsivity that is particularly associated with high-risk drinking. Moreover, childhood mechanisms of risk may play a role in this developmental chain such that childhood temperament and parenting may be mechanisms through which parental substance use disorder is associated with adolescent negative urgency and drinking behavior. Therefore, the current study tested whether parental substance use disorder was indirectly associated with adolescent drinking frequency through childhood temperament (i.e., "dysregulated irritability") and adolescent negative urgency, and whether relations differed by levels of maternal support and consistency of discipline. Data come from a multigenerational, longitudinal study of familial substance use disorder (N = 276, Mage in childhood = 6.28 (SD = 1.16), Mage in adolescence = 15.86 (SD = 1.56), 45.3% female). Findings indicated that parental substance use disorder indirectly predicted adolescent drinking through both childhood dysregulated irritability and adolescent negative urgency (mediated pathways). This indirect relation was stronger at higher vs. lower levels of maternal support but did not vary by maternal consistency of discipline. Parental substance use disorder also indirectly predicted adolescent drinking separately through childhood dysregulated irritability and negative urgency. Findings thus suggest that childhood dysregulated irritability may be an early marker of risk toward high-risk personality traits and behavior in adolescence that are associated with having a parental history of substance use disorder. Findings also suggest that increased maternal support may only be helpful in buffering risk for those with low levels of dysregulated irritability. Prevention efforts focused on childhood emotion regulation and emotion-based action may be useful in preventing adolescent risk behavior.
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Conducta del Adolescente , Trastornos Relacionados con Sustancias , Consumo de Alcohol en Menores , Adolescente , Humanos , Femenino , Masculino , Responsabilidad Parental/psicología , Estudios Longitudinales , Temperamento , Padres , Trastornos Relacionados con Sustancias/psicología , Conducta del Adolescente/psicología , Conducta de Ingestión de LíquidoRESUMEN
Although there is interest in the role of peers in children's schooling experiences, few researchers have examined associations and related underlying processes between peers' emotionality, an aspect of temperament, and children's academic achievement. This study evaluated whether target children's (N = 260) own self-regulation, assessed with two behavioral measures, served a moderating function for associations between peers' emotionality and children's own academic achievement in second grade. There was a positive association between peers' positive emotionality and reading scores for children with higher self-regulation. Peers' negative emotionality was negatively related to target children's reading scores, particularly for children with higher self-regulation levels, but was unrelated to math scores. Peers' positive and negative emotionality did not predict math scores, and there was no strong evidence for the moderating role of target children's self-regulation in this association. This study highlights the potential role of children's self-regulation in modulating peer effects on academic achievement, particularly reading.
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White children's effortful control (EC), parents' implicit racial attitudes, and their interaction were examined as predictors of children's prosocial behavior toward White versus Black recipients. Data were collected from 171 White children (55% male, Mage = 7.13 years, SD = 0.92) and their parent in 2017. Prosocial behavior toward White peers was predicted by children's higher EC. When predicting prosocial behavior toward Black peers and prosocial disparity (the difference between White and Black recipients), parents' implicit racial attitudes moderated the relation between children's EC and children's prosocial behavior. Specifically, children's EC was positively associated with prosocial behavior toward Black peers (and negatively related to inequity in prosocial behavior) only when parents exhibited less implicit racial bias.
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Negro o Afroamericano , Conducta Infantil , Padres , Racismo , Conducta Social , Blanco , Niño , Femenino , Humanos , Masculino , Altruismo , Relaciones Padres-Hijo , Padres/psicología , Grupos Raciales , Población Blanca , Negro o Afroamericano/psicología , Blanco/psicología , Racismo/psicología , Sesgo Implícito , Conducta Infantil/etnología , Conducta Infantil/psicologíaRESUMEN
Introduction: This longitudinal study examined unique and joint effects of parenting and negative emotionality in predicting the growth curves of adolescents' self-efficacy beliefs about regulating two discrete negative emotions (anger and sadness) and the association of these growth curves with later maladjustment (i.e., internalizing and externalizing problems). Methods: Participants were 285 children (T1: M age = 10.57, SD = 0.68; 53.3% girls) and their parents (mothers N = 286; fathers N = 276) from Colombia and Italy. Parental warmth, harsh parenting, and internalizing and externalizing problems were measured in late childhood at T1, whereas early adolescents' anger and sadness were measured at T2 (T2: M age = 12.10, SD = 1.09). Adolescent self-efficacy beliefs about anger and sadness regulation were measured at five time-points from T2 to T6 (T6: M age = 18.45, SD = 0.71), and internalizing and externalizing problems were measured again at T6. Results: Multi-group latent growth curve models (with country as the grouping variable) demonstrated that in both countries there was on average a linear increase in self-efficacy about anger regulation and no change or variation in self-efficacy about sadness regulation. In both countries, for self-efficacy about anger regulation (a) T1 harsh parenting and T1 externalizing problems were negatively associated with the intercept, (b) T2 anger was negatively associated with the slope, and (c) the intercept and the slope were associated with lower T6 internalizing and externalizing problems, controlling for T1 problems. For self-efficacy about sadness regulation, (a) T1 internalizing problems were negatively associated with the intercept only in Italy, (b) T2 sadness was negatively associated with the intercept only in Colombia, and (c) the intercept negatively predicted T6 internalizing problems. Discussion: This study advances knowledge of the normative development of self-efficacy beliefs about anger and sadness regulation during adolescence across two countries, highlighting the predictive value of pre-existing family and individual characteristics on this development and prediction by the development of self-efficacy beliefs on later adjustment.
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OBJECTIVE: This ecological study explored the association between regulatory emotional self-efficacy beliefs in managing negative emotions (RESE-NE) and heart rate variability (HRV), a measure of parasympathetic modulation of the heart that has been positively associated with a better ability to flexibly adjust to a changing environment and regulate emotions. METHOD: To test these associations, we used data from 161 adults working in relational professions (about 40% men; mean [standard deviation] age = 40.45 [14.17] years) whose HRV was assessed continuously for 24 hours. RESULTS: Individuals high in RESE-NE showed increased HRV levels ( ß = -0.05, p = .011). However, this effect was moderated by biological sex ( ß = -0.18, p = .0001) such that RESE-NE positively and significantly predicted HRV for men ( ß = 0.18, p < .0001) but not for women ( ß = -0.001, p = .989). CONCLUSIONS: All in all, our study provides initial empirical support for the theoretical expectation derived from social cognitive theory that RESE-NE is positively correlated with a physiological indicator of adaptability to the environmental demands. This was true only for men, likely because of sex differences in physiological stress reactivity and regulation.
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Emociones , Corazón , Adulto , Humanos , Masculino , Femenino , Frecuencia Cardíaca/fisiología , Emociones/fisiologíaRESUMEN
Relations among White (non-Latinx) children's empathy-related responding, prosocial behaviors, and racial attitudes toward White and Black peers were examined. In 2017, 190 (54% boys) White 5- to 9-year-old children (M = 7.09 years, SD = 0.94) watched a series of videos that depicted social rejection of either a White or Black child. Empathy-related responses, prosocial behaviors, and racial attitudes were measured using multiple methods. Results showed that younger children showed less facial concern toward Black than White peers and greater increases with age in concern and prosocial behaviors (sharing a desirable prize) for Black, compared to White, targets. Children's facial anger increased with age for White but not Black targets. The findings can extend our understanding children's anti-racism development.
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Altruismo , Empatía , Masculino , Niño , Humanos , Preescolar , Femenino , Conducta Social , Blanco , Grupo Paritario , Conducta InfantilRESUMEN
We examined the relation of White parents' color-blind racial attitudes (a global composite score and its subscales) and their implicit racial attitudes to their young children's race-based sympathy toward Black and White victims. One hundred and nighty non-Hispanic White children (54% boys, Mage = 7.13 years, SD = 0.92) reported their sympathy in response to short films depicting bullying toward White or Black children. Their primary caregivers' (mostly mothers') color-blind racial ideology (CBRI) was assessed through a questionnaire (reflecting global color blindness, as well as denial of institutional racism, White privilege, and blatant racial issues), and their implicit racial attitudes were assessed with a computerized test. Children's sympathy toward Black victims and their equitable sympathy (difference score toward Black vs. White victims) was predicted by parents' color blindness, implicit racial attitudes, and their interaction. Results indicated several interaction effects, such that parents' denial of blatant racial attitudes and global CBRI were negatively related to children's sympathy toward Black victims and equitable sympathy toward Black versus White victims, only when the parents held implicit racial attitudes that favored White people. In addition, parents' denial of White privilege was negatively related to children's sympathy toward Black victims. The findings are discussed in terms of potential ways to shape children's race-based sympathy and compassion, particularly with an eye toward ways White parents might socialize sympathy toward historically marginalized youth. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Defectos de la Visión Cromática , Racismo , Masculino , Adolescente , Humanos , Niño , Preescolar , Femenino , Racismo/psicología , Actitud , Emociones , PadresRESUMEN
Emotionality and self-regulation are crucial for positive development, especially during early adolescence when youths experience normative increases in behavioral problems and declines in prosociality. Using Latent Profile Analysis (LPA-a person-oriented technique to identify patterns of functioning within individuals), we identified youths' profiles based on dimensions of mother-reported negative emotionality (NE; anger/frustration, sadness/depressive mood), and Effortful Control (EC; attentional, activation and inhibitory control) and examined concurrent associations with self- and mother-reported aggressive and prosocial behaviors. We included a cross-national sample of 530 youths (M age =11.43; 49% males) from Colombia (17%), Italy (36%), and United States (47%). We identified four profiles: Adjusted (38%; low NE; high EC)-lowest aggression, highest prosociality; Average (34%; average NE and EC)-average aggression and prosociality; Emotional-regulated (20%; high NE; average EC)-average aggression and high prosociality; and Emotional-dysregulated (8%; high NE; low EC)-highest aggression, low prosociality. We highlight associations of different emotion-regulation patterns with specific behavioral responses in early adolescence.
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This study investigated developmental trajectories of observationally coded engagement across the early elementary years and whether these trajectories were associated with children's academic achievement. Furthermore, we evaluated if these relations varied as a function of children's family socio-economic status and early reading and math skills. Data were collected from 301 children who were studied from kindergarten (Mage = 65.74 months; 49% boys) to 2nd grade. Children's behavioral engagement was observed in kindergarten, 1st, and 2nd grade. Reading and math skills were assessed via standardized tests in kindergarten and 2nd grade. Growth mixture models identified two classes of behavioral engagement: most children (87.0%) displayed relatively high behavioral engagement in the fall of kindergarten and decreased significantly across time (referred to below as high-decreasing class), and other children (13.0%) exhibited moderate behavioral engagement in the fall of kindergarten that was stable across time (referred to below as moderate-stable class). After controlling for academic skills in kindergarten and demographic variables (i.e., child age, sex, ethnicity, and family socio-economic status), children in the high-decreasing class displayed higher reading skills, but not math skills, than children in the moderate-stable class. Additional analyses revealed that differences in reading skills between the two classes were present only for children from low socio-economic status families or for children low in kindergarten reading skills. The findings suggest that economically or academically at-risk students might benefit more than their peers from high behavioral engagement.
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Éxito Académico , Logro , Niño , Desarrollo Infantil , Preescolar , Estatus Económico , Femenino , Humanos , Estudios Longitudinales , MasculinoRESUMEN
This study examined gender-specific longitudinal pathways from harsh parenting through rumination to anxiety and depression symptoms among early adolescents from three countries and six subgroups. Participants were 567 mothers, 428 fathers, and 566 children (T1: Mage = 10.89; 50% girls) from Medellín, Colombia (n = 100); Naples, Italy (n = 95); Rome, Italy (n = 99); Durham, North Carolina, United States (Black n = 92, Latinx n = 80, and White n = 100). Parent reported maternal and paternal harsh parenting were measured at T1. Adolescent reported rumination was measured at T2 (Mage = 12.58) and anxiety and depression symptoms were measured at T1 and T3 (Mage = 13.71). Rumination mediated the pathway from maternal harsh discipline to girls' anxiety and depression symptoms, controlling for baseline anxiety and depression symptoms. The more harsh discipline mothers used, the more their daughters ruminated, which in turn was associated with increased anxiety and depression symptoms. Exploratory moderated mediation analyses indicated that the strength of the mediational pathway from maternal harsh discipline through girls' rumination to anxiety and depression symptoms decreased as the normativeness of harsh parenting increased. Mediational pathways for boys and for paternal harsh discipline were not significant. Our findings expand knowledge on specific contexts in which rumination is a mechanism for understanding pathways to anxiety and depression symptoms.
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Depresión , Responsabilidad Parental , Niño , Adolescente , Masculino , Femenino , Humanos , Ansiedad , Madres , Trastornos de AnsiedadRESUMEN
Promoting prosocial behaviour towards those who are dissimilar from oneself is an urgent contemporary issue. Because children spend much time in same-gender relationships, promoting other-gender prosociality could help them develop more inclusive relationships. Our goals were to better understand the development of school-age children's intergroup prosocial behavior and the extent to which elementary school-age children consider their own and the recipient's gender in prosocial behaviour. Participants included 515 3rd, 4th and 5th graders (263, 51.1% boys, Mageinyears = 9.08, SD = 1.00) surveyed in the fall (T1) and spring (T2). We assessed children's prosociality using peer nominations. Children became more prosocial toward same-gender peers over time but prosocial behavior toward other-gender peers remained stable. We found that gender mattered: Children showed an ingroup bias in prosociality favouring members of their own-gender group. Having other-gender friendships positively predicted children's prosocial behaviour towards other-gender peers over time. Children's felt similarity to other-gender peers was not directly, but indirectly, related to more prosocial behaviour toward other-gender peers. Findings shed light on potential pathways to fostering school-age children's intergroup prosocial behaviors.
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Altruismo , Conducta Social , Niño , Femenino , Humanos , Masculino , Grupo Paritario , Instituciones AcadémicasRESUMEN
This study examines associations between parents' rejection and control, adolescents' self-efficacy in their regulation of negative emotions, and maladjustment. Path analyses were employed to test (a) whether adolescents' dysregulation and self-efficacy regarding anger/sadness regulation mediate the relationship between parental rejection/control and adolescent maladjustment; (b) whether adolescent adjustment mediates the association between parental rejection/control and dysregulation and self-efficacy regarding anger/sadness regulation. Participants included 103 Italian adolescents (Time 1: M age = 15.57; 53% male), their mothers (n = 103), and their fathers (n = 79). Follow up data were assessed one year later (Time 2). At Time 1, adolescent reports of the frequency of mothers' and fathers' rejection and control were examined. At Time 2, adolescent-reports of their beliefs about self-efficacy in regulating anger and sadness, as well as anger and sadness dysregulation, were assessed by two methods: questionnaire and mobile ecological momentary assessment. At Time 2, mothers', fathers', and adolescents' reports of adolescents' aggressive behaviors and depressive problems were also assessed. Maternal rejection was associated with higher one year later aggressive problems, which in turn were associated with higher dysregulation of sadness, and lower self-efficacy in dealing with both anger and sadness. In addition, maternal rejection was associated with higher depressive symptoms one year later, which in turn were associated with lower self-efficacy in dealing with sadness and higher dysregulation of both anger and sadness. Finally, maternal control was associated with higher depressive symptoms, whereas paternal control was associated with lower depressive symptoms.
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Conducta del Adolescente , Regulación Emocional , Adolescente , Conducta del Adolescente/psicología , Ajuste Emocional , Femenino , Humanos , Masculino , Madres/psicología , Responsabilidad Parental/psicología , AutoeficaciaRESUMEN
Studies with extensive observations of real-life emotions at school are rare but might be especially useful for predicting school-related outcomes. This study evaluated observations of negative emotion expressivity in lunch and recreation settings across kindergarten, first grade, and second grade (N = 301), kindergarten teachers' reports of children's effortful control, and kindergarten and second grade teachers' reports of their perceived conflict with children. In latent growth curve analyses, we tested whether individual trajectories of negative expressivity from kindergarten to second grade, based on estimated slopes, predicted teacher-student conflict in second grade, and whether effortful control in kindergarten moderated this association. RESEARCH FINDINGS: Negative expressivity levels in kindergarten significantly predicted higher levels of teacher-student conflict in second grade, controlling prior teacher-student conflict. Furthermore, greater increases in negative expressivity from kindergarten to second grade were associated with higher teacher-student conflict in second grade especially for children who had difficulties with effortful control in kindergarten. PRACTICE OR POLICY: Results from this study have the potential to inform programs focused on reducing teacher-student conflict. The findings highlight the possibility of targeting both effortful control and negative emotion in the early elementary school transition as a means to improve teacher-student relationships.
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OBJECTIVE: Effortful control (EC) has been conceptualized as a higher-order construct defined by a class of self-regulatory mechanisms. However, the developmental higher-order structure of EC has seldom been investigated with a thorough psychometric analysis. To begin to fill this gap in the literature, data were obtained from parents and teachers of 185 children (age at T1: M = 9.43 y/o, SD = 1.17) every 2 years for 8 years. METHOD: We used a structural equation modeling approach for assessing if EC develops as a higher-order factor superordinate to three commonly studied self-regulatory mechanisms, namely inhibitory control (IC), attention focusing (AF), and attention shifting (AS). RESULTS: Results showed that (a) IC, AF, and AS followed a similar pattern of growth, (b) EC displayed an acceptable degree of scalar longitudinal invariance when operationalized as a latent variable indicated by IC, AF, and AS, (c) a higher-order structure explained the co-development of IC, AF, and AS, and (d) stability and change in EC negatively predicted externalizing symptoms, much better than the stability and change of IC, AF, and AS, but only for parents' reports. CONCLUSION: Overall, the higher-order structure of EC was supported, but our results also indicated that there is a certain degree of uniqueness in its facets.
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Atención , Padres , Niño , Humanos , Lactante , Estudios LongitudinalesRESUMEN
This longitudinal study examined the unique and joint effects of early adolescent temperament and parenting in predicting the development of adolescent internalizing symptoms in a cross-cultural sample. Participants were 544 early adolescents (T1: Mage = 12.58; 49.5% female) and their mothers (n = 530) from Medellín, Colombia (n = 88), Naples, Italy (n = 90), Rome, Italy (n = 100) and Durham, North Carolina, United States (African Americans n = 92, European Americans n = 97, and Latinx n = 77). Early adolescent negative emotionality (i.e., anger and sadness experience), self-regulation (i.e., effortful control), and parent monitoring and psychological control were measured at T1. Adolescent internalizing symptoms were measured at three time points. Latent Growth Curve Modeling (LGCM) without covariates or predictors indicated a slight linear increase in internalizing symptoms from ages 13-16 years across nearly all cultural groups. Multi-group LGCMs demonstrated several paths were consistently invariant across groups when examining how well temperament and parenting predicted intercept and slope factors. Higher initial levels of internalizing symptoms were significantly predicted by higher adolescent negative emotionality and parental psychological control as well as lower adolescent effortful control and parental monitoring measured one year earlier. Overall, adolescent effortful control appeared to protect against the emergence of internalizing symptoms in all cultures, but this effect faded over time. This study advances knowledge of the normative development of internalizing symptoms during adolescence across cultures while highlighting the predictive value of early adolescent temperament and parenting.
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Responsabilidad Parental , Temperamento , Adolescente , Niño , Femenino , Humanos , Estudios Longitudinales , Masculino , Madres/psicología , Relaciones Padres-Hijo , Responsabilidad Parental/psicología , Estados UnidosRESUMEN
OBJECTIVES: Some studies suggested more COVID-19-associated hospitalizations among racial and ethnic minorities. To inform public health practice, the COVID-19-associated Hospitalization Surveillance Network (COVID-NET) quantified associations between race/ethnicity, census tract socioeconomic indicators, and COVID-19-associated hospitalization rates. METHODS: Using data from COVID-NET population-based surveillance reported during March 1-April 30, 2020 along with socioeconomic and denominator data from the US Census Bureau, we calculated COVID-19-associated hospitalization rates by racial/ethnic and census tract-level socioeconomic strata. RESULTS: Among 16,000 COVID-19-associated hospitalizations, 34.8% occurred among non-Hispanic White (White) persons, 36.3% among non-Hispanic Black (Black) persons, and 18.2% among Hispanic or Latino (Hispanic) persons. Age-adjusted COVID-19-associated hospitalization rate were 151.6 (95% Confidence Interval (CI): 147.1-156.1) in census tracts with >15.2%-83.2% of persons living below the federal poverty level (high-poverty census tracts) and 75.5 (95% CI: 72.9-78.1) in census tracts with 0%-4.9% of persons living below the federal poverty level (low-poverty census tracts). Among White, Black, and Hispanic persons living in high-poverty census tracts, age-adjusted hospitalization rates were 120.3 (95% CI: 112.3-128.2), 252.2 (95% CI: 241.4-263.0), and 341.1 (95% CI: 317.3-365.0), respectively, compared with 58.2 (95% CI: 55.4-61.1), 304.0 (95%: 282.4-325.6), and 540.3 (95% CI: 477.0-603.6), respectively, in low-poverty census tracts. CONCLUSIONS: Overall, COVID-19-associated hospitalization rates were highest in high-poverty census tracts, but rates among Black and Hispanic persons were high regardless of poverty level. Public health practitioners must ensure mitigation measures and vaccination campaigns address needs of racial/ethnic minority groups and people living in high-poverty census tracts.
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COVID-19 , Etnicidad , Disparidades en el Estado de Salud , Hospitalización , Grupos Minoritarios , SARS-CoV-2 , Adolescente , Adulto , Anciano , COVID-19/epidemiología , COVID-19/terapia , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estados Unidos/epidemiologíaRESUMEN
An important part of children's social and cognitive development is their understanding that people are psychological beings with internal, mental states including desire, intention, perception, and belief. A full understanding of people as psychological beings requires a representational theory of mind (ToM), which is an understanding that mental states can faithfully represent reality, or misrepresent reality. For the last 35 years, researchers have relied on false-belief tasks as the gold standard to test children's understanding that beliefs can misrepresent reality. In false-belief tasks, children are asked to reason about the behavior of agents who have false beliefs about situations. Although a large body of evidence indicates that most children pass false-belief tasks by the end of the preschool years, the evidence we present in this monograph suggests that most children do not understand false beliefs or, surprisingly, even true beliefs until middle childhood. We argue that young children pass false-belief tasks without understanding false beliefs by using perceptual access reasoning (PAR). With PAR, children understand that seeing leads to knowing in the moment, but not that knowing also arises from thinking or persists as memory and belief after the situation changes. By the same token, PAR leads children to fail true-belief tasks. PAR theory can account for performance on other traditional tests of representational ToM and related tasks, and can account for the factors that have been found to correlate with or affect both true- and false-belief performance. The theory provides a new laboratory measure which we label the belief understanding scale (BUS). This scale can distinguish between a child who is operating with PAR versus a child who is understanding beliefs. This scale provides a method needed to allow the study of the development of representational ToM. In this monograph, we report the outcome of the tests that we have conducted of predictions generated by PAR theory. The findings demonstrated signature PAR limitations in reasoning about the mind during the ages when children are hypothesized to be using PAR. In Chapter II, secondary analyses of the published true-belief literature revealed that children failed several types of true-belief tasks. Chapters III through IX describe new empirical data collected across multiple studies between 2003 and 2014 from 580 children aged 4-7 years, as well as from a small sample of 14 adults. Participants were recruited from the Phoenix, Arizona metropolitan area. All participants were native English-speakers. Children were recruited from university-sponsored and community preschools and daycare centers, and from hospital maternity wards. Adults were university students who participated to partially fulfill course requirements for research participation. Sociometric data were collected only in Chapter IX, and are fully reported there. In Chapter III, minor alterations in task procedures produced wide variations in children's performance in 3-option false-belief tasks. In Chapter IV, we report findings which show that the developmental lag between children's understanding ignorance and understanding false belief is longer than the lag reported in previous studies. In Chapter V, children did not distinguish between agents who have false beliefs versus agents who have no beliefs. In Chapter VI, findings showed that children found it no easier to reason about true beliefs than to reason about false beliefs. In Chapter VII, when children were asked to justify their correct answers in false-belief tasks, they did not reference agents' false beliefs. Similarly, in Chapter VIII, when children were asked to explain agents' actions in false-belief tasks, they did not reference agents' false beliefs. In Chapter IX, children who were identified as using PAR differed from children who understood beliefs along three dimensions-in levels of social development, inhibitory control, and kindergarten adjustment. Although the findings need replication and additional studies of alternative interpretations, the collection of results reported in this monograph challenges the prevailing view that representational ToM is in place by the end of the preschool years. Furthermore, the pattern of findings is consistent with the proposal that PAR is the developmental precursor of representational ToM. The current findings also raise questions about claims that infants and toddlers demonstrate ToM-related abilities, and that representational ToM is innate.