RESUMEN
BACKGROUND: Emotion regulation (ER) is considered central in adolescent psychopathology, and ER strategies may change during challenging times, such as a global pandemic. Despite this, there remains a limited understanding of individual differences in ER mechanisms and their associations with psychopathology. This study examined whether and how cognitive reappraisal, expressive suppression, and self-compassion changed over COVID-19 and how these changes uniquely predicted adolescents' depressive symptoms. METHODS: A total of 2,411 adolescents (58.6% females; Mage = 18.51, SD = 0.80) completed the Emotional Regulation Questionnaire, the Self-compassion Scale, and the Symptom Checklist-90 before COVID-19 (in 2019) and during COVID-19 (in 2020). The predictive associations between each ER strategy and depressive symptoms were tested with latent change score models. RESULTS: Adolescents' use of expressive suppression and self-compassion strategies both increased during COVID-19. More increases in expressive suppression predicted more depressive symptoms, whereas more increases in self-compassion predicted fewer depressive symptoms. Although, on average, cognitive reappraisal did not change, it did show significant variations within the sample - increases (vs. decreases) in cognitive appraisal predicted fewer depressive symptoms. CONCLUSIONS: The study indicates how adolescents' ER strategies changed during the unprecedented global pandemic. It underscores protective roles of increased cognitive reappraisal and self-compassion, as well as the adverse consequence of heightened expressive suppression on adolescents' depressive symptoms. Findings offer insights for targeted interventions aimed at addressing specific ER strategies.
RESUMEN
Solar-powered photocatalytic conversion of CO2 to hydrocarbon fuels represents an emerging approach to solving the greenhouse effect. However, low charge separation efficiency, deficiency of surface catalytic active sites, and sluggish charge-transfer kinetics, together with the complicated reaction pathway, concurrently hinder the CO2 reduction. Herein, we show the rational construction of transition metal chalcogenides (TMCs) heterostructure CO2 reduction photosystems, wherein the TMC substrate is tightly integrated with amorphous oxygen-containing cobalt sulfide (CoSOH) by a solid non-conjugated polymer, i.e., poly(vinyl alcohol) (PVA), to customize the unidirectional charge-transfer pathway. In this well-defined multilayered nanoarchitecture, the PVA interim layer intercalated between TMCs and CoSOH acts as a hole-relaying mediator and meanwhile boosts CO2 adsorption capacity, while CoSOH functions as a terminal hole-collecting reservoir, stimulating the charge transport kinetics and boosting the charge separation over TMCs. This peculiar interface configuration and charge transport characteristics endow TMC/PVA/CoSOH heterostructures with significantly enhanced visible-light-driven photoactivity and CO2 conversion. Based on the intermediates probed during the photocatalytic CO2 reduction reaction, the photocatalytic mechanism was determined. Our work would inspire sparkling ideas to mediate the charge transfer over semiconductor for solar carbon neutral conversion.
RESUMEN
Subthreshold Attention-Deficit/Hyperactivity Disorder (ADHD) is defined as a neurobiological condition with some core inattentive or hyperactive/impulsive symptoms of ADHD which do not meet the full diagnosis clinically. Although it has been well documented that deficits in cognitive control, a high-level cognitive construct closely related to attention, are frequently found among children with ADHD, whether subthreshold ADHD is also associated with similar deficits remains unclear. In this study, we examined the attention functions and the cognitive control capacity (CCC) in children with ADHD (n = 39), those with subthreshold ADHD (n = 34), and typically developing peers (TD, n = 36). The results showed that the ADHD and subthreshold ADHD groups exhibited similar patterns of the impaired executive function of attention (revealed as an augment in flanker conflict effect) and reduced cognitive control capacity, and no significant difference was found between the two groups. These findings suggest that although children with subthreshold ADHD have not met the full criteria of ADHD, they showed reduced efficiency in cognitive control and attention function, similar to children with ADHD.