Whether high quantities of center-based care cause behavior problems is a controversial question. Studies using covariate adjustment for selection factors have detected relations between center care and behavior problems, but studies with stronger internal validity less often find such evidence. We examined whether within-child changes in hours in…

Deficits in language skills are a risk factor for later aggressive behaviour. However, previous research has mainly addressed clinical or high-risk samples and relations between language and aggressive behaviour in preschoolers and children in primary school. Based on a German longitudinal project with N = 547 typically developing children, the…

Parental conflict is a well-established predictor of child maladjustment. Most research, however, has not considered how the couple's positivity-negativity interaction ratio (i.e., the ability to compensate for negative behaviors with positive) may be linked with child adjustment. We examined interparental positivity-negativity interaction ratios…

In today's world, lifelong learning (LLL) is a key element of individual and societal success. However, despite knowing potential determinants of LLL, we do not yet understand how they interact to facilitate LLL. Therefore, the present study aims to verify the usefulness of the Theory of Planned Behavior (TPB) in predicting LLL. We applied a…

This study investigated factors influencing teachers' intention and willingness to teach about cancer in the context of the theory of planned behaviour. Because teaching about cancer is mandatory in Germany, we compared n=355 teachers' intention to teach about cancer under mandatory conditions and their willingness to teach about cancer if they…

Unmet mental health needs are common in young children. Recent research on mental health care utilization has focussed mainly on parental perspectives. This study seeks to determine which types of behaviours exhibited by children predict the perceived need for action among both parents and daycare teachers. Parents and daycare teachers reported on…

Perfectionism is a multidimensional personality trait whose facets differentially relate to indicators of psychological functioning, such as global self-esteem. There has been some theoretical disagreement whether perfectionism affects global self-esteem, or vice versa. This question merits renewed attention due to increasing efforts to prevent…

High sleep quality has been associated with beneficial outcomes across the life span. Intensive longitudinal studies suggest that these beneficial effects can also be observed on a day-to-day level. However, the dynamic interplay between subjective sleep quality and affective well-being in children's daily life has only rarely been investigated.…

Objective: To identify predictors of meningococcal vaccine uptake among university and college students, the most common carriers of meningococcal disease. Participants: University or college students aged 18 to 25 years. Methods: Multiple databases, citations, and gray literature were systematically searched in April 2017 and January 2019, for…

Halo effects in teacher judgments, can occur when the assessment of one aspect of a person's achievement is generalised to another aspect of achievement for that same person. We conducted an experimental study in which participants (N = 107) had to grade vignettes of the same student in two different subjects. The first vignette described either a…

There are scarce studies on bystanders' responses to racist hate speech. The present study was rooted in the general aggression model to examine the direct and indirect associations between witnessing racist hate speech and bystanders' active defending behaviors. Moreover, we examined if these associations varied as a function of the immigration…

The important role of early self-regulation skills has been repeatedly demonstrated in research. However, there is a lack of studies that have simultaneously examined the influence of hot and cool self-regulation skills on school performance and behavior problems in a longitudinal design from preschool to elementary school and controlling…

This study examined how quantity and quality of early childhood education and care (ECEC) are related to the socio-emotional adjustment of children born in Germany (30-48 months old, N = 395). Previous research focused on a small set of ECEC features, used broad measures, and yielded inconclusive results. We assessed ECEC quantity (age at entry,…

Children worldwide are currently facing a multitude of crises that are negatively impacting their mental health and academic performance. Three years after the onset of the COVID-19 pandemic, their mental health remains impaired, and profound learning gaps have been identified. Both factors are influenced by socioeconomic status (SES), which…

Although several longitudinal studies have confirmed that need-supportive teacher behaviour shapes intrinsic motivation in school, longitudinal studies on its role for intrinsic reading motivation are lacking. To fill in this gap, this study investigated whether changes in selected aspects of student-perceived teacher need-supportive behaviour in…