Quaranteens: Prepandemic relationship quality and changes in adolescent internalizing problems during the COVID-19 pandemic

This preregistered longitudinal study examined changes in adolescents' depressive and anxiety symptoms before and during the COVID-19 pandemic using latent additive piece-wise growth models. It also assessed whether support from and conflict with mothers, fathers, siblings, and best friends explained heterogeneity in change patterns. One hundred and ninety-two Dutch adolescents (Mean age: 14.3 years; 68.8% female) completed online biweekly questionnaires for a year (November 2019–October 2020), consisting of a prepandemic, lockdown, and reopening phase. Depressive symptoms increased following the lockdown and decreased upon reopening. Anxiety symptoms showed an immediate decrease followed by a gradual increase in the reopening phase. Prepandemic family and best friend support and conflict did not explain heterogeneity in depressive and anxiety symptoms during the COVID-19 pandemic.</p

“Sure I’ll help – I’ve just been sitting around doing nothing at school all day”: cognitive flexibility and child irony interpretation

Successful peer relations in older children depend on proficiency with banter, which in turn frequently involves verbal irony. Individual differences in successful irony interpretation have traditionally been attributed to Theory of Mind. Our premise was that the key factor might in fact be cognitive flexibility, the ability to switch between different perspectives (here: on the same utterance). We also wished to extend the focus of previous irony studies, which have almost exclusively examined Simple Irony, where the literal meaning conflicts with observable physical evidence (e.g. ‘great day for a picnic’ when viewing a downpour). Therefore, we also examined how children interpreted more Complex Irony, where listeners must consider at a deeper level the common ground shared with the speakers (e.g. general knowledge / cultural common ground or information about the particular speaker). In Study 1 we found that for six- to eight-year-olds both cognitive flexibility and Theory of Mind contributed unique variance to Simple Irony interpretation, when statistically controlling for non-verbal reasoning and structural language standardised scores. Neither inhibitory control, working memory nor general knowledge correlated with irony interpretation. Six- to eight-year-olds were at floor for Complex Irony. In Study 2 we found that cognitive flexibility contributed unique variance to how ten- to twelve-year-olds interpreted Complex Irony, while controlling for non-verbal reasoning, structural language and specific knowledge required. We are the first to examine the relationship with cognitive flexibility and conclude it must be taken into account when investigating the relationship between Theory of Mind and irony interpretation

Associations among the parent–adolescent relationship, aggression and delinquency in different ethnic groups: a replication across two Dutch samples

Background: The aim of the present study is to examine whether the patterns of association between the quality of the parent-adolescent relationship on the one hand, and aggression and delinquency on the other hand, are the same for boys and girls of Dutch and Moroccan origin living in the Netherlands. Since inconsistent results have been found previously, the present study tests the replicability of the model of associations in two different Dutch samples of adolescents. Method: Study 1 included 288 adolescents (M age = 14.9, range 12-17 years) all attending lower secondary education. Study 2 included 306 adolescents (M age = 13.2, range = 12-15 years) who were part of a larger community sample with oversampling of at risk adolescents. Results: Multigroup structural analyses showed that neither in Study 1 nor in Study 2 ethnic or gender differences were found in the patterns of associations between support, autonomy, disclosure, and negativity in the parent-adolescent relationship and aggression and delinquency. The patterns were largely similar for both studies. Mainly negative quality of the relationship in both studies was found to be strongly related to both aggression and delinquency. Discussion: Results show that family processes that affect adolescent development, show a large degree of universality across gender and ethnicity

Reduced TCA cycle rates at high hydrostatic pressure hinder hydrocarbon degradation and obligate oil degraders in natural, deep-sea microbial communities

Petroleum hydrocarbons reach the deep-sea following natural and anthropogenic factors. The process by which they enter deep-sea microbial food webs and impact the biogeochemical cycling of carbon and other elements is unclear. Hydrostatic pressure (HP) is a distinctive parameter of the deep sea, although rarely investigated. Whether HP alone affects the assembly and activity of oil-degrading communities remains to be resolved. Here we have demonstrated that hydrocarbon degradation in deep-sea microbial communities is lower at native HP (10 MPa, about 1000 m below sea surface level) than at ambient pressure. In long-term enrichments, increased HP selectively inhibited obligate hydrocarbon-degraders and downregulated the expression of beta-oxidation-related proteins (i.e., the main hydrocarbon-degradation pathway) resulting in low cell growth and CO2 production. Short-term experiments with HP-adapted synthetic communities confirmed this data, revealing a HP-dependent accumulation of citrate and dihydroxyacetone. Citrate accumulation suggests rates of aerobic oxidation of fatty acids in the TCA cycle were reduced. Dihydroxyacetone is connected to citrate through glycerol metabolism and glycolysis, both upregulated with increased HP. High degradation rates by obligate hydrocarbon-degraders may thus be unfavourable at increased HP, explaining their selective suppression. Through lab-scale cultivation, the present study is the first to highlight a link between impaired cell metabolism and microbial community assembly in hydrocarbon degradation at high HP. Overall, this data indicate that hydrocarbons fate differs substantially in surface waters as compared to deep-sea environments, with in situ low temperature and limited nutrients availability expected to further prolong hydrocarbons persistence at deep sea

The role of peer contacts in the relationship between parental knowledge and adolescents' externalizing behaviors: A latent growth curve modeling approach

The purpose of the present study was to examine the direct and indirect effects (through peer contacts) of parental knowledge on adolescents' delinquent and aggressive problem behavior, using latent growth curve modeling. A sample of 457 13- to 14-year old adolescents at first measurement wave (M=13.27; SD=0.45 years) filled out questionnaires about their parents, peers, and problem behavior three times with 1-year intervals in between. Regarding initial levels of behavior, both direct and indirect effects of parental knowledge were found on aggressive as well as on delinquent behavior. When the rate of change in behaviors was considered, only direct effects were found for both types of problem behavior, whereas indirect effects were absent. Gender differences were also found, with stronger effects of parenting on both aggressive and delinquent problem behavior for boys and stronger effects of peer contacts on aggressive behavior for girls. The present study shows that different behaviors of the externalizing spectrum have different trajectories and diverse relations with parenting and should not be treated as identical

Sibling relationships and school entry psychosocial functioning: Dual risk or differential susceptibility?

The aim of the present study was to test whether relations between temperament, sibling relationship quality, and problem behavior and social competence of children at school entry are in line with either of two competing models, dual risk and differential susceptibility. Our sample consisted of 977 Dutch mothers (Mean age 35.7 years) reporting about a target child at school entry. Regarding target children, mean age was 4.7 years, 48.1% were boys and 52.1% were older than their sibling. Mean age difference between siblings was 2.7 years. Using a cross-sectional design, mothers filled out online questionnaires concerning sibling relationship quality, temperament, problem behavior, and social competence of the target child. Path analysis was used to examine whether temperament moderated the link between sibling relationship quality and child psychosocial functioning. In line with differential susceptibility, results from moderation analyses indicate that among children low in effortful control (EC), sibling conflict was more strongly positively associated with internalizing and externalizing problems than among children high in EC, but sibling warmth also was more strongly positively related to social competence in children low in EC than in children high in EC. However, follow-up Region of Significance analyses shows that our findings are only consistent with weak differential susceptibility. No significant moderation effects were found for surgency or negative affect. Our findings suggest that low effortful control is a susceptibility marker concerning the link between sibling relationship quality and child functioning. Limitations, implications, and future directions are discussed

Longitudinal Linkages between Older and Younger Sibling Depressive Symptoms and Perceived Sibling Relationship Quality

The sibling relationship has an important impact on children’s emotional functioning, but it is yet unclear whether and how sibling relationship quality affects adolescent depressive symptoms over time. This study contributes to existing knowledge by examining the relative importance of three aspects of sibling relationship quality (i.e., support, conflict and power balance) on the one hand and sibling depressive symptoms on the other hand in predicting adolescent depressive symptoms over time. Additionally, this study examined whether these influence patterns were moderated by perceived sibling relationship quality and by dyadic gender composition. Across six annual waves, 412 Dutch adolescents (57% boys; M age = 12.34 years) and their older siblings (47% boys; M age = 15.36 years) reported on depressive symptoms and sibling relationship quality. Cross-lagged panel analyses showed that only sibling depressive symptoms and not perceived relationship quality predicted adolescent depressive symptoms one year later. This effect was not moderated by sibling relationship quality or gender composition. These results indicate that sibling depressive symptoms may be a risk factor for adolescent depressive symptoms

Longitudinal Linkages between Older and Younger Sibling Depressive Symptoms and Perceived Sibling Relationship Quality

The sibling relationship has an important impact on children’s emotional functioning, but it is yet unclear whether and how sibling relationship quality affects adolescent depressive symptoms over time. This study contributes to existing knowledge by examining the relative importance of three aspects of sibling relationship quality (i.e., support, conflict and power balance) on the one hand and sibling depressive symptoms on the other hand in predicting adolescent depressive symptoms over time. Additionally, this study examined whether these influence patterns were moderated by perceived sibling relationship quality and by dyadic gender composition. Across six annual waves, 412 Dutch adolescents (57% boys; M age = 12.34 years) and their older siblings (47% boys; M age = 15.36 years) reported on depressive symptoms and sibling relationship quality. Cross-lagged panel analyses showed that only sibling depressive symptoms and not perceived relationship quality predicted adolescent depressive symptoms one year later. This effect was not moderated by sibling relationship quality or gender composition. These results indicate that sibling depressive symptoms may be a risk factor for adolescent depressive symptoms