Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 344
Filtrar
1.
Dev Cogn Neurosci ; 69: 101430, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39151254

RESUMEN

Wanting to matter-to feel socially recognized, appreciated, and capable of actions that benefit others-represents a fundamental motivation in human development. The motivational salience of mattering appears to increase in adolescence. Evidence suggests this is related to pubertal increases in the incentive salience for gaining social value and personal agency. This can provide a useful heuristic for understanding motivational proclivities (i.e. wanting to matter) that influence action-outcome learning as young adolescents are exploring and learning how to navigate increasingly complex social and relational environments. Adolescence also brings new capacities, motives, and opportunities for learning to care about and contribute to the benefit of others. Together, these create a window of opportunity: a sensitive period for learning to gain salient feelings of mattering through caring prosocial actions and valued societal contributions. Successfully discovering ways of mattering by doing things that matter to others may contribute to formative socio-emotional learning about self/other. Advances in understanding these social and relational learning processes and their neurodevelopmental underpinnings can inform strategies to improve developmental trajectories of social competence and wellbeing among adolescents growing up in a rapidly changing and increasingly techno-centric world.


Asunto(s)
Motivación , Aprendizaje Social , Humanos , Adolescente , Desarrollo del Adolescente/fisiología , Conducta Social
2.
Sleep ; 47(1)2024 01 11.
Artículo en Inglés | MEDLINE | ID: mdl-37935899

RESUMEN

STUDY OBJECTIVES: Healthy sleep is important for adolescent neurodevelopment, and relationships between brain structure and sleep can vary in strength over this maturational window. Although cortical gyrification is increasingly considered a useful index for understanding cognitive and emotional outcomes in adolescence, and sleep is also a strong predictor of such outcomes, we know relatively little about associations between cortical gyrification and sleep. We aimed to identify developmentally invariant (stable across age) or developmentally specific (observed only during discrete age intervals) gyrification-sleep relationships in young people. METHODS: A total of 252 Neuroimaging and Pediatric Sleep Databank participants (9-26 years; 58.3% female) completed wrist actigraphy and a structural MRI scan. Local gyrification index (lGI) was estimated for 34 bilateral brain regions. Naturalistic sleep characteristics (duration, timing, continuity, and regularity) were estimated from wrist actigraphy. Regularized regression for feature selection was used to examine gyrification-sleep relationships. RESULTS: For most brain regions, greater lGI was associated with longer sleep duration, earlier sleep timing, lower variability in sleep regularity, and shorter time awake after sleep onset. lGI in frontoparietal network regions showed associations with sleep patterns that were stable across age. However, in default mode network regions, lGI was only associated with sleep patterns from late childhood through early-to-mid adolescence, a period of vulnerability for mental health disorders. CONCLUSIONS: We detected both developmentally invariant and developmentally specific ties between local gyrification and naturalistic sleep patterns. Default mode network regions may be particularly susceptible to interventions promoting more optimal sleep during childhood and adolescence.


Asunto(s)
Corteza Cerebral , Trastornos Mentales , Humanos , Femenino , Adulto Joven , Adolescente , Niño , Masculino , Corteza Cerebral/diagnóstico por imagen , Imagen por Resonancia Magnética , Encéfalo , Emociones
3.
J Clin Child Adolesc Psychol ; : 1-11, 2023 Oct 05.
Artículo en Inglés | MEDLINE | ID: mdl-37796228

RESUMEN

OBJECTIVE: Positive associations between therapeutic alliance and outcome (e.g. youth symptom severity) have been documented in the youth anxiety literature; however, little is known about the conditions under which early alliance contributes to positive outcomes in youth. The present study examined the relations between therapeutic alliance, session attendance, and outcomes in youths (N = 135; 55.6% female) who participated in a randomized clinical trial testing the efficacy of cognitive-behavioral therapy or client-centered therapy for anxiety. METHOD: We evaluated a conceptual model wherein: (1) early alliance indirectly contributes to positive outcomes by improving session attendance; (2) alliance-outcome associations differ by intervention type, with stronger associations in cognitive-behavioral therapy compared to client-centered therapy; and (3) alliance-outcome associations vary across outcome measurement timepoints, with the effect of early alliance on outcomes decaying over time. RESULTS: Contrary to hypotheses, provider ratings of early alliance predicted greater youth-rated anxiety symptom severity post-treatment (i.e. worse treatment outcomes). Session attendance predicted positive youth-rated outcomes, though there was no indirect effect of early alliance on outcomes through session attendance. CONCLUSIONS: Results show that increasing session attendance is important for enhancing outcomes and do not support early alliance as a predictor of outcomes.

4.
bioRxiv ; 2023 Sep 16.
Artículo en Inglés | MEDLINE | ID: mdl-37745609

RESUMEN

Study objectives: Healthy sleep is important for adolescent neurodevelopment, and relationships between brain structure and sleep can vary in strength over this maturational window. Although cortical gyrification is increasingly considered a useful index for understanding cognitive and emotional outcomes in adolescence, and sleep is also a strong predictor of such outcomes, we know relatively little about associations between cortical gyrification and sleep. Methods: Using Local gyrification index (lGI) of 34 bilateral brain regions and regularized regression for feature selection, we examined gyrification-sleep relationships in the Neuroimaging and Pediatric Sleep databank (252 participants; 9-26 years; 58.3% female) and identified developmentally invariant (stable across age) or developmentally specific (observed only during discrete age intervals) brain-sleep associations. Naturalistic sleep characteristics (duration, timing, continuity, and regularity) were estimated from wrist actigraphy. Results: For most brain regions, greater lGI was associated with longer sleep duration, earlier sleep timing, lower variability in sleep regularity, and shorter time awake after sleep onset. lGI in frontoparietal network regions showed associations with sleep patterns that were stable across age. However, in default mode network regions, lGI was only associated with sleep patterns from late childhood through early-to-mid adolescence, a period of vulnerability for mental health disorders. Conclusions: We detected both developmentally invariant and developmentally specific ties between local gyrification and naturalistic sleep patterns. Default mode network regions may be particularly susceptible to interventions promoting more optimal sleep during childhood and adolescence.

5.
Health Psychol Behav Med ; 11(1): 2219299, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37274749

RESUMEN

Background: Research has demonstrated the importance of understanding risk factors for mental health and wellbeing. Less research has focused on protective factors that protect mental health and promote wellbeing in diverse contexts. Estimating structural paths from risk protective factors to psychopathology and wellbeing can inform prioritization of targeted investment in adolescent health programs that seek to modify factors that are most closely associated with mental wellbeing. Study objective: The purpose of this study was to examine risk factors (e.g. emotional neglect, emotional abuse, physical neglect, stigma) and protective factors (e.g. community relationships, self-esteem, and autonomy) among adolescent orphans, protective associations with depression, anxiety and externalizing behaviors and promotive associations with hope, happiness, and health. Methods: The analytic sample was collected between January and March of 2019 and included 350 adolescent orphans ages 10-15 from three districts in Tanzania. Participants completed survey interviews, 75-90 min in length, that measured risk and protective factors, psychological symptoms, and mental wellbeing measures. Results: Results of the fitted structural equation model indicated that structural paths from protective factors to psychopathology (ß = -0.53, p = 0.015) and mental wellbeing (ß = 0.72, p = 0.014) outcomes were significant. Structural paths from risk factors to psychopathology (ß = -0.34, p = 0.108) and mental wellbeing (ß = -0.24, p = 0.405) were not significant. Conclusion: In a sample of vulnerable youth, protective factors (e.g. community relationships, self-esteem, and autonomy) were significantly associated with reduced depression, anxiety and externalizing behaviors and increased hope, happiness, and health in a structural equation model that included risk factors (emotional neglect, emotional abuse, physical neglect). Results suggest that strong community relationships, self-esteem and autonomy may be important modifiable factors to target in intervention programs aimed at supporting adolescent mental wellbeing.

6.
Biol Psychol ; 181: 108618, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-37352911

RESUMEN

Neurobiological sensitivity to peer interactions is a proposed marker of risk for adolescent depression. We investigated neural response to peer rejection and acceptance in relation to concurrent and prospective depression risk in adolescent and pre-adolescent girls. Participants were 76 girls (Mage=13, 45% racial/ethnic minorities) varying in depression risk: 22 with current major depressive disorder (MDD), 30 at High Risk for MDD based on parental history, and 24 at Low Risk with no psychiatric history. Girls participated in the Chatroom-Interact task-involving rejection and acceptance feedback from fictitious peers-while undergoing functional magnetic resonance neuroimaging. Activation in response to peer rejection and acceptance was extracted from regions of interest. Depressive symptoms were assessed at 6- and 12-month follow-up. Girls with MDD showed blunted left subgenual anterior cingulate response to acceptance versus girls in High and Low Risk groups. Girls in the High Risk group showed greater right temporo-parietal junction (rTPJ) and right anterior insula (AI) activation to both acceptance and rejection versus girls in the MDD (rTPJ) and Low Risk (rTPJ, AI) groups. Greater rTPJ response to rejection was associated with fewer depressive symptoms at 12-months and mediated the association between High Risk group status and 12-month depressive symptoms; greater rTPJ response to acceptance mediated the association between High Risk and increased 12-month depressive symptoms. Our finding of associations between altered neural response to peer interactions and concurrent and prospective depression risk/resilience highlights the importance of neural underpinnings of social cognition as risk and compensatory adaptations along the pathway to depression.


Asunto(s)
Trastorno Depresivo Mayor , Femenino , Humanos , Adolescente , Depresión/psicología , Estudios Prospectivos , Grupo Paritario , Giro del Cíngulo , Imagen por Resonancia Magnética
7.
Glob Health Res Policy ; 8(1): 15, 2023 05 18.
Artículo en Inglés | MEDLINE | ID: mdl-37198701

RESUMEN

BACKGROUND: Utu is a Kiswahili term with a long history of cultural significance in Tanzania. It conveys a value system of shared, collective humanity. While variants of Utu have been studied in other contexts, a measure of Utu that captures this important collective asset has not been developed in Tanzania. The aims of this study were to (1) examine dimensional constructs that represent Utu, (2) validate a measurement scale of Utu for use with adolescents, (3) examine differences between orphan and non-orphan adolescents in self-reported Utu and, (4) examine structural paths between adverse life experiences, coping strategies, Utu, and resilience.  METHODS: This study collected survey data from adolescents from three districts in peri-urban Tanzania in two samples: 189 orphan adolescents ages 10-17 in May 2020 and 333 non-orphan adolescents ages 10-14 in August 2020. Confirmatory factor analysis was used to validate the hypothesized factor structure of the developed Utu measure. Structural equation models were used to examine path associations with adverse life experiences, coping and resilience. RESULTS: The five dimensional constructs comprising the Utu measure included Resource Sharing, Group Solidarity, Respect and Dignity, Collectivity, and Compassion. Confirmatory factor analysis of the Utu measure demonstrated excellent fit (CFI = 0.98; TLI = 0.97; SRMR = 0.024; RMSEA = 0.046) and internal consistency (α = 0.94) among adolescents in this study. Positive, significant associations were found between Utu and coping (ß = 0.29, p < 0.001) and Utu and intra/interpersonal and collective resilience (ß = 0.13, p < 0.014). Utu was not significantly associated with adverse life experiences, age or gender. CONCLUSIONS: A five-dimensional measurement scale for Utu was validated in a sample of orphan and non-orphan adolescents in Tanzania. Utu is a collective asset associated with higher levels of reported resilience in both orphan and non-orphan adolescent populations in Tanzania. Promoting Utu may be an effective universal public health prevention approach. Implications for adolescent programming are discussed.


Asunto(s)
Resiliencia Psicológica , Humanos , Adolescente , Psicometría , Reproducibilidad de los Resultados , Adaptación Psicológica , Encuestas y Cuestionarios
8.
J Affect Disord ; 338: 92-99, 2023 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-37230269

RESUMEN

INTRODUCTION: Adolescence is a period of vulnerability for emotion regulation and sleep difficulties, risks that might be compounded by intense COVID-19 lockdowns and challenges. The aim of this study was to investigate how sleep quality related to emotion regulation difficulties in adolescents during lockdown in Perú. METHODS: Participants were 2563 adolescents enrolled in Innova school in Perú (11 - -17 years) in May 2020. Hypotheses were derived from exploring one half of the sample, preregistered at https://osf.io/fuetz/, and then confirmed in the second half of the sample. Participants completed subjective surveys of sleep quality (short PSQI) and the Difficulties in Emotion Regulation Scale Short Form (DERS-SF). RESULTS: Worse sleep quality was robustly associated with more difficulties in emotion regulation across both samples. The association was found particularly for emotion regulation subscales related to the ability to engage in goal directed behavior in the face of distress, emotional clarity and strategies to deal with feeling distressed. In contrast, there was no robust association between sleep and the ability to regulate impulses in the context of negative emotions, and no association with the ability to accept emotions. Girls and older adolescents robustly endorsed worse sleep quality and more difficulties in emotion regulation. LIMITATIONS: The cross-sectional nature of this study prevents us from determining the direction of the association. Data were collected using adolescent self-report which, while informative of adolescent perceptions, might diverge from objective measures of sleep or emotion regulation difficulties. CONCLUSIONS: Our findings with adolescents in Perú contribute to our understanding of the association between sleep and emotion regulation at a broader global scale.


Asunto(s)
COVID-19 , Regulación Emocional , Femenino , Humanos , Adolescente , Calidad del Sueño , Estudios Transversales , Control de Enfermedades Transmisibles , Emociones/fisiología
9.
Glob Public Health ; 18(1): 2213300, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-37196667

RESUMEN

ABSTRACTGrowth mindset, persistence, and self-efficacy are important protective factors in understanding adolescent psychopathology, including depression, anxiety, and externalising behaviours. Previous studies have shown that dimensions of self-efficacy (academic, social, and emotional) have differential protective effects with mental health outcomes and these differences vary by sex. This study examines the dimensional mediation of self-efficacy from motivational mindsets on anxiety, depression, and externalising behaviours in a sample of early adolescents ages 10-11. Surveys were administered to participants to measure growth mindset and persistence on internalising and externalising symptoms. The Self-Efficacy Questionnaire for Children (SEQ-C) was used to measure domains of self-efficacy for mediation analysis. Multi-group structural equation modelling by sex indicated that structural paths were not invariant by sex. Significant direct effects were identified from persistence to externalising behaviours in boys, and significant direct effects were identified from growth mindset to depression in girls. In a sample of Tanzanian early adolescents, self-efficacy mediates the protective association between motivational mindsets on psychopathology. Higher academic self-efficacy was associated with reduced externalising problems in both boys and girls. Implications for adolescent programmes and future research are discussed.


Asunto(s)
Depresión , Autoeficacia , Niño , Masculino , Femenino , Humanos , Adolescente , Depresión/epidemiología , Ansiedad , Hombres
10.
Soc Cogn Affect Neurosci ; 18(1)2023 04 13.
Artículo en Inglés | MEDLINE | ID: mdl-37052213

RESUMEN

The goal of this study was to examine the relation between real-world socio-emotional measures and neural activation to parental criticism, a salient form of social threat for adolescents. This work could help us understand why heightened neural reactivity to social threat consistently emerges as a risk factor for internalizing psychopathology in youth. We predicted that youth with higher reactivity to parental criticism (vs neutral comments) in the subgenual anterior cingulate cortex (sgACC), amygdala and anterior insula would experience (i) less happiness in daily positive interpersonal situations and (ii) more sadness and anger in daily negative interpersonal situations. Participants (44 youth aged 11-16 years with a history of anxiety) completed a 10-day ecological momentary assessment protocol and a neuroimaging task in which they listened to audio clips of their parents' criticism and neutral comments. Mixed-effects models tested associations between neural activation to critical (vs neutral) feedback and emotions in interpersonal situations. Youth who exhibited higher activation in the sgACC to parental criticism reported less happiness during daily positive interpersonal situations. No significant neural predictors of negative emotions (e.g. sadness and anger) emerged. These findings provide evidence of real-world correlates of neural reactivity to social threat that may have important clinical implications.


Asunto(s)
Emociones , Felicidad , Humanos , Adolescente , Emociones/fisiología , Ansiedad/psicología , Ira , Padres
11.
J Child Psychol Psychiatry ; 64(1): 83-90, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-35817759

RESUMEN

BACKGROUND: Poor sleep and anxiety disorders are highly comorbid in youth, and each predicts altered ventral striatum (VS) response to rewards, which may impact mental health risk. Contrasting evidence suggests previously reported negative associations between sleep health and VS response may be stronger or weaker in youth with anxiety, indicating sensitivity to win/loss information or blunted reward processing, respectively. We cross-sectionally examined the role of sleep in VS response to rewards among youth with anxiety versus a no-psychiatric-diagnosis comparison (ND) group. We expected a group*sleep interaction on VS response to rewards but did not hypothesize directionality. METHODS: As part of the pretreatment battery for a randomized clinical trial, 74 youth with anxiety and 31 ND youth (ages 9-14 years; n = 55 female) completed a monetary reward task during fMRI. During the same pretreatment window, actigraphy and diary-estimated sleep were collected over 5 days, and participants and their parents each reported participants' total sleep problems. We examined group*sleep interactions on VS response to monetary rewards versus losses via three mixed linear models corresponding to actigraphy, diary, and questionnaires, respectively. RESULTS: Each model indicated group*sleep interactions on VS response to rewards. Actigraphy and diary-estimated time awake after sleep onset predicted reduced VS response in youth with anxiety but not ND youth. Parent-reported sleep problems similarly interacted with group, but simple slopes were nonsignificant. CONCLUSIONS: Wake after sleep onset was associated with blunted reward response in youth with anxiety. These data suggest a potential pathway through which sleep could contribute to perturbed reward function and reward-related psychopathology (e.g., depression) in youth with anxiety.


Asunto(s)
Trastornos del Sueño-Vigilia , Estriado Ventral , Adolescente , Humanos , Femenino , Niño , Vigilia , Sueño/fisiología , Trastornos de Ansiedad , Estriado Ventral/diagnóstico por imagen , Ansiedad , Recompensa
12.
J Res Adolesc ; 33(1): 74-91, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-35799311

RESUMEN

This study aimed to examine changes in depression and anxiety symptoms from before to during the first 6 months of the COVID-19 pandemic in a sample of 1,339 adolescents (9-18 years old, 59% female) from three countries. We also examined if age, race/ethnicity, disease burden, or strictness of government restrictions moderated change in symptoms. Data from 12 longitudinal studies (10 U.S., 1 Netherlands, 1 Peru) were combined. Linear mixed effect models showed that depression, but not anxiety, symptoms increased significantly (median increase = 28%). The most negative mental health impacts were reported by multiracial adolescents and those under 'lockdown' restrictions. Policy makers need to consider these impacts by investing in ways to support adolescents' mental health during the pandemic.


Asunto(s)
COVID-19 , Adolescente , Femenino , Humanos , Niño , Masculino , Pandemias , Depresión/epidemiología , Ansiedad/epidemiología , Etnicidad
13.
Child Adolesc Ment Health ; 28(1): 83-89, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-36565015

RESUMEN

OBJECTIVE: Evaluate the preliminary effectiveness of a school-based intervention to promote digital citizenship (DC) in Perú. METHODS: We piloted a translation and cultural adaptation of a DC curriculum originally designed for the U.S. with students in Perú. Students were assigned to either the Intervention group (n = 136, 52% female; mean age = 13.3) or Control group (n = 130, 55% female; mean age = 13.4). Students in the Control group continued with "business-as-usual" during their advisory period while the Intervention group received the DC curriculum. RESULTS: We found limited evidence that the DC curriculum can promote positive online experience and online conflict resolution skills, as well as increase knowledge regarding DC terms and concepts. However, the lack of strong effects suggests the need to revise materials, improve implementation and consider further adaptations. Nonetheless, results from this proof-of-concept study provide building blocks for future implementations of DC interventions for youth in Latin America.


Asunto(s)
Ciudadanía , Curriculum , Humanos , Adolescente , Femenino , Masculino , Perú , Estudiantes
14.
J Clin Child Adolesc Psychol ; 52(5): 659-674, 2023 09 03.
Artículo en Inglés | MEDLINE | ID: mdl-35072560

RESUMEN

OBJECTIVE: The goal of this study was to examine whether neural sensitivity to negative peer evaluation conveys risk for depression among youth with a history of anxiety. We hypothesized that brain activation in regions that process affective salience in response to rejection, relative to acceptance, from virtual peers would predict depressive symptoms 1 year later and would be associated with ecological momentary assessment (EMA) reports of peer connectedness. METHOD: Participants were 38 adolescents ages 11-16 (50% female) with a history of anxiety, recruited from a previous clinical trial. The study was a prospective naturalistic follow-up of depressive symptoms assessed 2 years (Wave 2) and 3 years (Wave 3) following treatment. At Wave 2, participants completed the Chatroom Interact Task during neuroimaging and 16 days of EMA. RESULTS: Controlling for depressive and anxiety symptoms at Wave 2, subgenual anterior cingulate (sgACC; ß = .39, p = .010) activation to peer rejection (vs. acceptance) predicted depressive symptoms at Wave 3. SgACC activation to rejection (vs. acceptance) was highly negatively correlated with EMA reports of connectedness with peers in daily life (r = - .71, p < .001). CONCLUSION: Findings suggest that elevated sgACC activation to negative, relative to positive, peer evaluation may serve as a risk factor for depressive symptoms among youth with a history of anxiety, perhaps by promoting vigilance or reactivity to social evaluative threats. SgACC activation to simulated peer evaluation appears to have implications for understanding how adolescents experience their daily social environments in ways that could contribute to depressive symptoms.


Asunto(s)
Depresión , Giro del Cíngulo , Humanos , Adolescente , Femenino , Masculino , Depresión/psicología , Giro del Cíngulo/diagnóstico por imagen , Estudios Prospectivos , Ansiedad/psicología , Trastornos de Ansiedad , Imagen por Resonancia Magnética
15.
J Adolesc Health ; 72(1): 96-104, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36270890

RESUMEN

PURPOSE: We examined whether interindividual differences in naturalistic sleep patterns correlate with any deviations from typical brain aging. METHODS: Our sample consisted of 251 participants without current psychiatric diagnoses (9-25 years; mean [standard deviation] = 17.4 ± 4.52 yr; 58% female) drawn from the Neuroimaging and Pediatric Sleep Databank. Participants completed a T1-weighted structural magnetic resonance imaging scan and 5-7 days of wrist actigraphy to assess naturalistic sleep patterns (duration, timing, continuity, and regularity). We estimated brain age from extracted structural magnetic resonance imaging indices and calculated brain age gap (estimated brain age-chronological age). Robust regressions tested cross-sectional associations between brain age gap and sleep patterns. Exploratory models investigated moderating effects of age and biological gender and, in a subset of the sample, links between sleep, brain age gap, and depression severity (Patient-Reported Outcomes Measurement Information System Depression). RESULTS: Later sleep timing (midsleep) was associated with more advanced brain aging (larger brain age gap), ß = 0.1575, puncorr = .0042, pfdr = .0167. Exploratory models suggested that this effect may be driven by males, although the interaction of gender and brain age gap did not survive multiple comparison correction (ß = 0.2459, puncorr = .0336, pfdr = .1061). Sleep duration, continuity, and regularity were not significantly associated with brain age gap. Age did not moderate any brain age gap-sleep relationships. In this psychiatrically healthy sample, depression severity was also not associated with brain age gap or sleep. DISCUSSION: Later midsleep may be one behavioral cause or correlate of more advanced brain aging, particularly among males. Future studies should examine whether advanced brain aging and individual differences in sleep precede the onset of suboptimal cognitive-emotional outcomes in adolescents.


Asunto(s)
Actigrafía , Sueño , Masculino , Adolescente , Niño , Humanos , Femenino , Estudios Transversales , Actigrafía/métodos , Encéfalo/diagnóstico por imagen , Envejecimiento
16.
Dev Cogn Neurosci ; 58: 101176, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-36427434

RESUMEN

In humans, puberty initiates a period of rapid growth, change, and formative neurobehavioral development. Brain and behavior changes during this maturational window contribute to opportunities for social learning. Here we provide new insights into adolescence as a unique period of social learning and development by describing field studies of our closest living relatives, chimpanzees. Like humans, chimpanzees have a multiyear juvenile life stage between weaning and puberty onset followed by a multiyear adolescent life stage after pubertal onset but prior to socially-recognized adulthood. As they develop increasing autonomy from caregivers, adolescent chimpanzees explore and develop many different types of social relationships with a wide range of individuals in a highly flexible social environment. We describe how adolescent social motivations and experiences differ from those of juveniles and adults and expose adolescents to high levels of uncertainty, risk, and vulnerability, as well as opportunities for adaptive social learning. We discuss how these adolescent learning experiences may be shaped by early life and in turn shape varied adult social outcomes. We outline how future chimpanzee field research can contribute in new ways to a more integrative interdisciplinary understanding of adolescence as a developmental window of adaptive social learning and resilience.


Asunto(s)
Pan troglodytes , Aprendizaje Social , Humanos , Adolescente , Animales , Adulto , Pubertad , Encéfalo , Motivación , Conducta Social
17.
Elife ; 112022 Nov 04.
Artículo en Inglés | MEDLINE | ID: mdl-36331872

RESUMEN

Reinforcement Learning (RL) models have revolutionized the cognitive and brain sciences, promising to explain behavior from simple conditioning to complex problem solving, to shed light on developmental and individual differences, and to anchor cognitive processes in specific brain mechanisms. However, the RL literature increasingly reveals contradictory results, which might cast doubt on these claims. We hypothesized that many contradictions arise from two commonly-held assumptions about computational model parameters that are actually often invalid: That parameters generalize between contexts (e.g. tasks, models) and that they capture interpretable (i.e. unique, distinctive) neurocognitive processes. To test this, we asked 291 participants aged 8-30 years to complete three learning tasks in one experimental session, and fitted RL models to each. We found that some parameters (exploration / decision noise) showed significant generalization: they followed similar developmental trajectories, and were reciprocally predictive between tasks. Still, generalization was significantly below the methodological ceiling. Furthermore, other parameters (learning rates, forgetting) did not show evidence of generalization, and sometimes even opposite developmental trajectories. Interpretability was low for all parameters. We conclude that the systematic study of context factors (e.g. reward stochasticity; task volatility) will be necessary to enhance the generalizability and interpretability of computational cognitive models.


Asunto(s)
Aprendizaje , Refuerzo en Psicología , Humanos , Recompensa , Generalización Psicológica , Simulación por Computador
18.
Dev Cogn Neurosci ; 58: 101172, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-36368089

RESUMEN

Early pubertal timing has been linked to increased risk for internalizing psychopathology in adolescents. Work in older adolescents and adults suggests that heightened reward sensitivity may buffer risk for internalizing symptoms. However, few studies have investigated these associations during the early transition to puberty, a window of vulnerability to mental health risk. In this preregistered study, we investigated the associations among pubertal timing, internalizing symptoms, and reward sensitivity in a large, population-based sample of 11,224 9-10 year-olds from the ABCD Study®. Using split-half analysis, we tested for within-sample replications of hypothesized effects across two age- and sex-matched subsets of the sample. Early pubertal timing was associated with higher internalizing symptoms in female and male participants across samples, with 9-10 year-olds in the mid-pubertal stage at the highest risk for internalizing symptoms. Additionally, early pubertal timing was robustly associated with greater self-reported reward sensitivity in both female and male participants. We observed inconsistent evidence for a moderating role of reward sensitivity across measurement domains (self-report, behavioral, and fMRI data), several of which differed by sex, but none of these interactions replicated across samples. Together, these findings provide unique insights into early indicators of risk for internalizing psychopathology during the transition to puberty in a large, population-based, demographically diverse sample of youth.


Asunto(s)
Pubertad , Recompensa , Adolescente , Adulto , Humanos , Masculino , Femenino , Imagen por Resonancia Magnética
19.
Front Psychol ; 13: 981967, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36275217

RESUMEN

Construct definitions of empathy have sought to distinguish between different domains of empathetic capacity that are related to psychological distress or wellbeing. This study aims to validate the psychometric properties of the Empathy Questionnaire for Children and Adolescents (EmQue-CA) and to test for measurement invariance by gender in a sample of 579 very young adolescents (270 boys and 309 girls) ages 9-12 from Tanzania. Exploratory and confirmatory factor analysis were completed to assess the factor analytic structure of the EmQue-CA, indicating a three-factor model fit these data well. Concurrent validity was demonstrated through strong significant correlations with prosocial behavior and generosity measures. Convergent validity indicated the behavioral subdimension of empathy, intent to comfort, was significantly and negatively associated with externalizing behaviors. Measurement invariance by gender was not supported for these data due to configural invariance in covariance between cognitive empathy and intent to comfort latent constructs. These findings confirm the EmQue-CA is an important measure of three dimensions of empathy; affective empathy, cognitive empathy, and behavioral empathy (intent to comfort) in a sample of Tanzanian adolescents.

20.
Int J Psychophysiol ; 182: 70-80, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-36174791

RESUMEN

Pediatric anxiety disorders are characterized by potentiated threat responses and maladaptive emotion regulation (ER). The Late Positive Potential (LPP) is a neural index of heightened attention to emotional stimuli. Anxious individuals typically exhibit a larger LPP to unpleasant stimuli, but the LPP may also be blunted to unpleasant and pleasant stimuli for those with co-morbid depression. While a larger LPP is thought to reflect greater emotional reactivity, it is unknown to what extent variation in the LPP to laboratory stimuli corresponds to daily emotional functioning. We assessed the LPP in the laboratory in response to unpleasant, pleasant, and neutral images in combination with ecological momentary assessment of emotional reactivity and regulation in daily life among youth (9-14 years old; 55 % female) with anxiety disorders (ANX, N = 130) and no psychiatric diagnoses (ND, N = 47). We tested whether LPP amplitudes to unpleasant and pleasant stimuli (vs. neutral) are greater in ANX (vs. ND) youth and whether LPP amplitudes inversely correlate with co-morbid depression symptoms. We also examined associations between the LPP and daily life emotional functioning among ANX and ND youth. We found no group-by-valence effects on LPP amplitudes. Within ANX youth, higher depression symptoms were associated with smaller LPP amplitudes to unpleasant, but not pleasant, stimuli relative to neutral stimuli. Larger LPP amplitudes to emotional (relative to neutral) stimuli were correlated with use of specific ER strategies among ANX and ND youth but not emotional reactivity. While the LPP may reflect initial emotional reactivity to laboratory stimuli, it is associated with ER behaviors, and not emotional reactivity, in daily life.


Asunto(s)
Electroencefalografía , Emociones , Adolescente , Niño , Femenino , Humanos , Masculino , Electroencefalografía/métodos , Emociones/fisiología , Trastornos de Ansiedad , Ansiedad , Potenciales Evocados/fisiología
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA