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Institute
Cross-sectional findings suggest that volumes of specific hippocampal subfields increase in middle childhood and early adolescence. In contrast, a small number of available longitudinal studies reported decreased volumes in most subfields over this age range. Further, it remains unknown whether structural changes in development are associated with corresponding gains in children’s memory. Here we report cross-sectional age differences in children’s hippocampal subfield volumes together with longitudinal developmental trajectories and their relationships with memory performance. In two waves, 109 participants aged 6–10 years (wave 1: MAge=7.25, wave 2: MAge=9.27) underwent high-resolution magnetic resonance imaging to assess hippocampal subfield volumes (imaging data available at both waves for 65 participants) and completed tasks assessing hippocampus dependent memory processes. We found that cross-sectional age-associations and longitudinal developmental trends in hippocampal subfield volumes were discrepant, both by subfields and in direction. Further, volumetric changes were largely unrelated to changes in memory, with the exception that increase in subiculum volume was associated with gains in spatial memory. Longitudinal and cross-sectional patterns of brain-cognition couplings were also discrepant. We discuss potential sources of these discrepancies. This study underscores that children’s structural brain development and its relationship to cognition cannot be inferred from cross-sectional age comparisons.
A Corrigendum on Take a “Selfie”: Examining How Leaders Emerge From Leader Self-Awareness, Self-Leadership, and Self-Efficacy by Bracht, E. M., Keng-Highberger, F. T., Avolio, B. J., and Huang, Y. (2021). Front. Psychol. 12:635085. doi: 10.3389/fpsyg.2021.635085 In the original article, there was an error. The Ethics Statement incorrectly stated that “Ethical review and approval was not required for the study on human participants in accordance with the local legislation and institutional requirements. The patients/participants provided their written informed consent to participate in this study.” A correction has been made to the Ethics Statement. The corrected statement is shown below. The studies involving human participants were reviewed and approved by Nanyang Technological University (NTU) Institutional Review Board (IRB-2020-04-004). The participants provided their written informed consent to participate in this study. The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.
Resilience has been defined as the maintenance or quick recovery of mental health during and after times of adversity. How to operationalize resilience and to determine the factors and processes that lead to good long-term mental health outcomes in stressor-exposed individuals is a matter of ongoing debate and of critical importance for the advancement of the field. One of the biggest challenges for implementing an outcome-based definition of resilience in longitudinal observational study designs lies in the fact that real-life adversity is usually unpredictable and that its substantial qualitative as well as temporal variability between subjects often precludes defining circumscribed time windows of inter-individually comparable stressor exposure relative to which the maintenance or recovery of mental health can be determined. To address this pertinent issue, we propose to frequently and regularly monitor stressor exposure (E) and mental health problems (P) throughout a study's observation period [Frequent Stressor and Mental Health Monitoring (FRESHMO)-paradigm]. On this basis, a subject's deviation at any single monitoring time point from the study sample's normative E–P relationship (the regression residual) can be used to calculate that subject's current mental health reactivity to stressor exposure (“stressor reactivity,” SR). The SR score takes into account the individual extent of experienced adversity and is comparable between and within subjects. Individual SR time courses across monitoring time points reflect intra-individual temporal variability in SR, where periods of under-reactivity (negative SR score) are associated with accumulation of fewer mental health problems than is normal for the sample. If FRESHMO is accompanied by regular measurement of potential resilience factors, temporal changes in resilience factors can be used to predict SR time courses. An increase in a resilience factor measurement explaining a lagged decrease in SR can then be considered to index a process of adaptation to stressor exposure that promotes a resilient outcome (an allostatic resilience process). This design principle allows resilience research to move beyond merely determining baseline predictors of resilience outcomes, which cannot inform about how individuals successfully adjust and adapt when confronted with adversity. Hence, FRESHMO plus regular resilience factor monitoring incorporates a dynamic-systems perspective into resilience research.
Human observers can quickly and accurately categorize scenes. This remarkable ability is related to the usage of information at different spatial frequencies (SFs) following a coarse-to-fine pattern: Low SFs, conveying coarse layout information, are thought to be used earlier than high SFs, representing more fine-grained information. Alternatives to this pattern have rarely been considered. Here, we probed all possible SF usage strategies randomly with high resolution in both the SF and time dimensions at two categorization levels. We show that correct basic-level categorizations of indoor scenes are linked to the sampling of relatively high SFs, whereas correct outdoor scene categorizations are predicted by an early use of high SFs and a later use of low SFs (fine-to-coarse pattern of SF usage). Superordinate-level categorizations (indoor vs. outdoor scenes) rely on lower SFs early on, followed by a shift to higher SFs and a subsequent shift back to lower SFs in late stages. In summary, our results show no consistent pattern of SF usage across tasks and only partially replicate the diagnostic SFs found in previous studies. We therefore propose that SF sampling strategies of observers differ with varying stimulus and task characteristics, thus favouring the notion of flexible SF usage.
Der vorliegende Beitrag untersucht die Bedeutung von individuellen Merkmalen (Fähigkeitsselbstkonzept und Leistungsängstlichkeit) sowie von konstruktiver Unterstützung durch Lehrkräfte für die soziale Integration von Schülerinnen und Schülern in der Sekundarstufe. Bezüglich des Unterrichtsqualitätsmerkmals der konstruktiven Unterstützung wird zwischen zwei Facetten unterschieden, nämlich einer sozio-emotionalen Unterstützung sowie einer fachlich-inhaltlichen Unterstützung durch die Lehrkraft. Dabei wird erstmals die Bedeutung dieser Facetten für die von Schülerinnen und Schülern erlebte soziale Integration untersucht und ebenso geprüft, welche differenziellen Zusammenhänge sich für Lernende mit individuellen Risikofaktoren schulischer Entwicklung zeigen. Es wurden Befragungsdaten aus zwei Erhebungszeitpunkten (mittlerer Abstand: 8 Wochen) von 1.116 Schülerinnen und Schülern in 49 Mathematikklassen der Sekundarstufe mehrebenen-analytisch ausgewertet. Die Ergebnisse zeigen, dass beide Facetten konstruktiver Unterstützung mit dem Erleben sozialer Integration zusammenhingen. Schülerinnen und Schüler mit niedrigem Mathematik-Fähigkeitsselbstkonzept bzw. hoher Leistungsängstlichkeit fühlten sich weniger gut in die Klassengemeinschaft integriert. Die Facetten konstruktiver Unterstützung spielten für diese Zusammenhänge eine besondere Rolle: Der Zusammenhang zwischen Fähigkeitsselbstkonzept und sozialer Integration wurde durch eine fachlich-inhaltliche Unterstützung moderiert, sodass sich Lernende mit niedrigem Fähigkeitsselbstkonzept in Klassen mit hoher fachlich-inhaltlicher Unterstützung vergleichbar gut sozial integriert fühlten wie die anderen Lernenden. Der Zusammenhang von Leistungsängstlichkeit und sozialer Integration wurde durch beide Facetten konstruktiver Unterstützung moderiert, sodass in Klassen mit hoher konstruktiver Unterstützung Lernende mit hoher Leistungsängstlichkeit sich genauso sozial integriert erlebten wie ihre weniger leistungsängstlichen Mitschülerinnen und Mitschüler. Der Beitrag untermauert somit die hohe Bedeutung von Beziehungsqualität im schulischen Kontext und bringt neue Erkenntnisse zu differenziellen Zusammenhängen von Unterricht und schulischen Outcomes in Abhängigkeit von den Lernvoraussetzungen der Schülerinnen und Schüler.
Humans accumulate knowledge throughout their entire lives. In what ways does this accumulation of knowledge influence learning of new information? Are there age-related differences in the way prior knowledge is leveraged for remembering new information? We review studies that have investigated these questions, focusing on those that have used the memory congruency effect, which provides a quantitative measure of memory advantage because of prior knowledge. Regarding the first question, evidence suggests that the accumulation of knowledge is a key factor promoting the development of memory across childhood and counteracting some of the decline in older age. Regarding the second question, evidence suggests that, if available knowledge is controlled for, age-related differences in the memory congruency effect largely disappear. These results point to an age-invariance in the way prior knowledge is leveraged for learning new information. Research on neural mechanisms and implications for application are discussed.
Der vorliegende Beitrag untersucht die Bedeutung von individuellen Merkmalen (Fähigkeitsselbstkonzept und Leistungsängstlichkeit) sowie von konstruktiver Unterstützung durch Lehrkräfte für die soziale Integration von Schülerinnen und Schülern in der Sekundarstufe. Bezüglich des Unterrichtsqualitätsmerkmals der konstruktiven Unterstützung wird zwischen zwei Facetten unterschieden, nämlich einer sozio-emotionalen Unterstützung sowie einer fachlich-inhaltlichen Unterstützung durch die Lehrkraft. Dabei wird erstmals die Bedeutung dieser Facetten für die von Schülerinnen und Schülern erlebte soziale Integration untersucht und ebenso geprüft, welche differenziellen Zusammenhänge sich für Lernende mit individuellen Risikofaktoren schulischer Entwicklung zeigen. Es wurden Befragungsdaten aus zwei Erhebungszeitpunkten (mittlerer Abstand: 8 Wochen) von 1.116 Schülerinnen und Schülern in 49 Mathematikklassen der Sekundarstufe mehrebenen-analytisch ausgewertet. Die Ergebnisse zeigen, dass beide Facetten konstruktiver Unterstützung mit dem Erleben sozialer Integration zusammenhingen. Schülerinnen und Schüler mit niedrigem Mathematik-Fähigkeitsselbstkonzept bzw. hoher Leistungsängstlichkeit fühlten sich weniger gut in die Klassengemeinschaft integriert. Die Facetten konstruktiver Unterstützung spielten für diese Zusammenhänge eine besondere Rolle: Der Zusammenhang zwischen Fähigkeitsselbstkonzept und sozialer Integration wurde durch eine fachlich-inhaltliche Unterstützung moderiert, sodass sich Lernende mit niedrigem Fähigkeitsselbstkonzept in Klassen mit hoher fachlich-inhaltlicher Unterstützung vergleichbar gut sozial integriert fühlten wie die anderen Lernenden. Der Zusammenhang von Leistungsängstlichkeit und sozialer Integration wurde durch beide Facetten konstruktiver Unterstützung moderiert, sodass in Klassen mit hoher konstruktiver Unterstützung Lernende mit hoher Leistungsängstlichkeit sich genauso sozial integriert erlebten wie ihre weniger leistungsängstlichen Mitschülerinnen und Mitschüler. Der Beitrag untermauert somit die hohe Bedeutung von Beziehungsqualität im schulischen Kontext und bringt neue Erkenntnisse zu differenziellen Zusammenhängen von Unterricht und schulischen Outcomes in Abhängigkeit von den Lernvoraussetzungen der Schülerinnen und Schüler.
The COVID-19 pandemic has triggered health-related anxiety in ways that undermine peoples’ mental and physical health. Contextual factors such as living in a high-risk area might further increase the risk of health deterioration. Based on the Social Identity Approach, we argue that social identities can not only be local that are characterized by social interactions, but also be global that are characterized by a symbolic sense of togetherness and that both of these can be a basis for health. In line with these ideas, we tested how identification with one’s family and with humankind relates to stress and physical symptoms while experiencing health-related anxiety and being exposed to contextual risk factors. We tested our assumptions in a representative sample (N = 974) two-wave survey study with a 4-week time lag. The results show that anxiety at Time 1 was positively related to stress and physical symptoms at Time 2. Feeling exposed to risk factors related to lower physical health, but was unrelated to stress. Family identification and identification with humankind were both negatively associated with subsequent stress and family identification was negatively associated with subsequent physical symptoms. These findings suggest that for social identities to be beneficial for mental health, they can be embodied as well as symbolic.
Gender stereotypes and self-characterizations in Germany and Nigeria: a cross-cultural comparison
(2021)
Studies on the content of gender stereotypes have been conducted primarily in the United States, while research in other, particularly non-Western, countries is scarce. In this research, we assessed and compared the content of gender stereotypes and self-characterizations in Germany—a Western European country—and Nigeria—a West African country. We asked 403 Germans and Nigerians to rate three target groups (either men in general, women in general, or themselves) on 74 agentic and communal characteristics. We found that Nigerian women were rated as more agentic and more communal than German women, while German men were rated as more communal than Nigerian men, but similarly on agency. On self-characterizations, Nigerian men rated themselves as more communal than German men, but again similarly on agency; Nigerian women rated themselves as more agentic and more communal than German women. Within-country comparisons showed that in Germany, men and women were perceived as similarly agentic and communal, while in Nigeria, men and women were perceived as similarly agentic, but women were perceived as more communal than men (by both others and when rating themselves). Further analysis on individual agentic and communal characteristics, however, showed important differences in stereotypes and self-characterizations of men and women in both countries that were obscured when looking at overall agency and communion. Our results show that gender stereotyping of oneself and others is complex and highlights the impact of culture on people's perceptions of gender.
Point forecasts can be interpreted as functionals (i.e., point summaries) of predictive distributions. We extend methodology for the identification of the functional based on time series of point forecasts and associated realizations. Focusing on state-dependent quantiles and expectiles, we provide a generalized method of moments estimator for the functional, along with tests of optimality under general joint hypotheses of functional relationships and information bases. Our tests are more flexible, and in simulations better calibrated and more powerful than existing solutions. In empirical examples, economic growth forecasts and model output for precipitation are indicative of overstatement in anticipation of extreme events.
As knowledge derived from scientific theory can be helpful for teachers to reflect on their everyday teaching, universities have the challenging task of teaching this knowledge in such a way that pre-service teachers are able to apply it to their later teaching. Case-based learning has emerged as a promising method to foster pre-service teachers’ scientific knowledge application throughout university teacher education. However, surprisingly, empirical evidence for its effectiveness as compared to more traditional instructional interventions in teacher education is still inconclusive, partly being due to constraints concerning the employed comparison groups. The present quasi-experimental study (conducted in the field of classroom management) investigated the effect of studying exactly the same theoretical content with and without text-based cases on scientific knowledge application (as measured by a vignette test) in a sample of 101 pre-service teachers. Although the study found a small advantage for the case-based learning group, it demonstrated that scientific knowledge application may also be effectively fostered in a more traditional instructional course. The findings and their implications are discussed against the background of cognitive theories on inert knowledge and how to prevent it in teacher education.
Mit der zunehmenden Relevanz des Internets in den letzten zwei Jahrzehnten geht auch die Gefahr einer dysfunktionalen, suchtartigen Nutzung von verschiedenen Internetanwendungen und insbesondere von digitalen Spielen einher. Jugendliche sind von Internetbezogenen Störungen (IbS) in besonderem Maße betroffen. Die vorliegende Dissertation leistet in vier Einzelstudien einen Beitrag zur Beantwortung offener Forschungsfragen auf dem Gebiet der IbS. Studie 1 setzt sich damit auseinander, ob und inwiefern die Aufnahme der „Gaming Disorder“ in die Neuauflage der internationalen Klassifikation der Krankheiten der WHO (ICD-11) gerechtfertigt ist und kommt zu dem Schluss, dass die neue Diagnose sowohl für die Forschung als auch für die klinische Praxis mehr Vor- als Nachteile bietet. Der Gefahr einer Überpathologisierung und Stigmatisierung kann durch eine gründliche Diagnosestellung durch geschulte Fachpersonen begegnet werden. Studie 2 untersucht schulbezogene Risikofaktoren von IbS. Dazu wurden N=418 Jugendliche und junge Erwachsene im Alter von 11 bis 21 Jahren, die vorab auf ein erhöhtes Risiko für IbS gescreent wurden, per Fragebogen nach ihrem Internetnutzungsverhalten, nach IbS-Symptomen, nach Schulnoten und Fehltagen, nach ihrem Lern- und Sozialverhalten sowie nach Prokrastinationstendenzen befragt. Die Daten entstammen dem ersten Messzeitpunkt der PROTECT-Studie (Professioneller Umgang mit technischen Medien). Aufgrund der hierarchischen Datenstruktur wurde zur Analyse ein Mehrebenenansatz gewählt. Die Ergebnisse zeigen, dass Online-Zeit, vermehrtes Gaming und Prokrastination auf der Individualebene sowie Sozialverhalten auf der Schulebene Symptome einer IbS vorhersagen. Studie 3 und Studie 4 befassen sich mit der Prävention von IbS. Studie 3 gibt einen Überblick über den internationalen Stand der Forschung im Bereich der Prävention und Frühintervention und stellt die derzeit verfügbaren deutschsprachigen Präventionsprogramme vor.
Während in den westlichen Ländern vor allem gruppenbasierte, verhaltensorientierte Programme zur Anwendung kommen, werden im ostasiatischen Raum auch verhältnispräventive Maßnahmen eingesetzt, wie etwa Spielzeitbeschränkungen für Minderjährige. In Deutschland sind derzeit 12 Präventionsprogramme für IbS verfügbar.
Für zwei dieser Programme wurde die Wirksamkeit in randomisiert-kontrollierten Studien nachgewiesen. Studie 4 ist eine dieser Untersuchungen. Sie stellt die Ergebnisse der Wirksamkeitsprüfung für das von unserer Arbeitsgruppe entwickelte PROTECT-Präventionsprogramm dar. Dazu wurden N=422 Schülerinnen und Schüler, die vorab auf ein erhöhtes Risiko für IbS gescreent wurden, nach Clustern (Schulen) randomisiert in eine Interventions- und eine Beobachtungsgruppe eingeteilt. Während in der Interventionsgruppe das kognitiv-verhaltenstherapeutisch orientierte 4-wöchige PROTECT-Programm in Kleingruppen durchgeführt wurde, füllten die Teilnehmenden der Beobachtungsgruppe lediglich zu vier Messzeitpunkten (vor und nach der Intervention, nach 4 Monaten und nach 12 Monaten)
diagnostische Fragebögen zur Soziodemografie, zur Internetnutzung, zur IbS-Symptomatik, zu komorbiden psychischen Störungen, zur Emotionsregulation, zum Sozial- und Lernverhalten, zu Prokrastinationstendenzen sowie zum Selbstwertgefühl aus. Die Ergebnisse der Untersuchung zeigen eine Reduktion der IbSSymptomatik in beiden Gruppen. Die Reduktion ist jedoch in der Interventionsgruppe signifikant stärker, was für die Wirksamkeit des PROTECT-Programms spricht. Die Ergebnisse von Studie 1-4 ergänzen bisherige Forschungsbefunde zu IbS im Bereich der Diagnostik, Entstehung und Prävention.
Narcissistic traits have been linked to structural and functional brain networks, including the insular cortex, however, with inconsistent findings. In this study, we tested the hypothesis that subclinical narcissism is associated with variations in regional brain volumes in insular and prefrontal areas. We studied 103 clinically healthy subjects, who were assessed for narcissistic traits using the Narcissistic Personality Inventory (NPI, 40-item version) and received high-resolution structural magnetic resonance imaging. Voxel-based morphometry was used to analyse MRI scans and multiple regression models were used for statistical analysis, with threshold-free cluster enhancement (TFCE). We found significant (p < 0.05, family-wise error FWE corrected) positive correlations of NPI scores with grey matter in multiple prefrontal cortical areas (including the medial and ventromedial, anterior/rostral dorsolateral prefrontal and orbitofrontal cortices, subgenual and mid-anterior cingulate cortices, insula, and bilateral caudate nuclei). We did not observe reliable links to particular facets of NPI-narcissism. Our findings provide novel evidence for an association of narcissistic traits with variations in prefrontal and insular brain structure, which also overlap with previous functional studies of narcissism-related phenotypes including self-enhancement and social dominance. However, further studies are needed to clarify differential associations to entitlement vs. vulnerable facets of narcissism.
Background and aims: One reason for the controversial discussion of whether the dual task (DT) walking paradigm has an added value for diagnosis in clinical conditions might be the use of different gait measurement systems. Therefore, the purpose was 1) to detect DT effects of central gait parameters obtained from five different gait analysis devices in young and old adults, 2) to assess the consistency of the measurement systems, and 3) to determine if the absolut and proportional DT costs (DTC) are greater than the system-measurement error under ST. Methods: Twelve old (72.2 ± 7.9y) and 14 young adults (28.3 ± 6.2y) walked a 14.7-m distance under ST and DT at a self-selected gait velocity. Interrater reliability, precision of the measurement and sensitivity to change were calculated under ST and DT. Results: An age effect was observed in almost all gait parameters for the ST condition. For DT only differences for stride length (p < .029, ɳ2p = .239) as well as single and double limb support (p = .036, ɳ2p = .227; p = .034, ɳ2p = .218) remained. The measurement systems showed a lower absolute agreement compared to consistency across all systems. Conclusions: When reporting DT effects, the real changes in performance and random measurement errors should always be accounted for. These findings have strong implications for interpreting DT effects.
Abstract: The Children's Communication Checklist-2 (CCC-2) is often applied to assess pragmatic language impairment which is highly prevalent in autism spectrum disorder (ASD) and several mental health conditions. We replicated previous findings on the limited applicability of the CCC-2 in clinical samples and the inconsistent findings concerning the factor structure. The aim of the present study was, thus, to develop a concise, simplified, and revised version of the CCC-2 in a large German-speaking sample. Four groups of children and adolescents aged 4 to 17 years were included: ASD (n = 195), intellectual disability (ID, n = 83), diverse mental health conditions (MHC, n = 144) and a typically developing control group (TD, n = 417). We reduced the original number of items from 70 to 39, based on item analysis, exploratory factor analysis and the exclusion of communication-unrelated items. The revised version, CCC-R (α = 0.96), consists of two empirically derived factors: a pragmatic-language (α = 0.96) and a grammatical-semantic-language factor (α = 0.93). All clinical groups (ASD, ID, and MHC) had significantly increased CCC-R total scores, with the highest scores being in the neurodevelopmental disorder groups (ASD and ID). In addition, we found group-specific patterns of elevated pragmatic-language scores in the ASD group and grammatical-semantic scores in the ID group. The CCC-R was comparable to the CCC-2 in distinguishing ASD from the other groups. The CCC-R is proposed as a simplified and easily applied, clinical questionnaire for caregivers, assessing pragmatic language impairments across neurodevelopmental disorders and mental health conditions. Lay Summary: The CCC-2 is a questionnaire designed to identify children who have problems in the social use of language, however, it is limited in its clinical application and exhibits inconsistent factors. We have created a shorter and simpler version of the CCC-2 that we have called the CCC-R which overcomes the previous limitations of the CCC-2. It consists of two subscales: pragmatic language and grammatical-semantic language. The CCC-R can be used as a short and clinically relevant caregiver questionnaire which assesses pragmatic language impairments in children and adolescents. Autism Res 2021, 14: 759–772. © 2021 The Authors. Autism Research published by International Society for Autism Research published by Wiley Periodicals LLC.
Physical inactivity is discussed as one of the most detrimental influences for lifestyle-related medical complications such as obesity, heart disease, hypertension, diabetes and premature mortality in in- and outpatients with major depressive disorder (MDD). In contrast, intervention studies indicate that moderate-to-vigorous-intensity physical activity (MVPA) might reduce complications and depression symptoms itself. Self-reported data on depression [Beck-Depression-Inventory-II (BDI-II)], general habitual well-being (FAHW), self-esteem and physical self-perception (FAHW, MSWS) were administrated in a cross-sectional study with 76 in- and outpatients with MDD. MVPA was documented using ActiGraph wGT3X + ® accelerometers and fitness was measured using cardiopulmonary exercise testing (CPET). Subgroups were built according to activity level (low PA defined as MVPA < 30 min/day, moderate PA defined as MVPA 30–45 min/day, high PA defined as MVPA > 45 min/day). Statistical analysis was performed using a Mann–Whitney U and Kruskal–Wallis test, Spearman correlation and mediation analysis. BDI-II scores and MVPA values of in- and outpatients were comparable, but fitness differed between the two groups. Analysis of the outpatient group showed a negative correlation between BDI-II and MVPA. No association of inpatient MVPA and psychopathology was found. General habitual well-being and self-esteem mediated the relationship between outpatient MVPA and BDI-II. The level of depression determined by the BDI-II score was significantly higher in the outpatient low- and moderate PA subgroups compared to outpatients with high PA. Fitness showed no association to depression symptoms or well-being. To ameliorate depressive symptoms of MDD outpatients, intervention strategies should promote habitual MVPA and exercise exceeding the duration recommended for general health (≥ 30 min/day). Further studies need to investigate sufficient MVPA strategies to impact MDD symptoms in inpatient settings. Exercise effects seem to be driven by changes of well-being rather than increased physical fitness.