Planning and conducting experiments require the application of the control of variables strategy (CVS). Research indicates that older children can learn the CVS by engaging in guided-inquiry activities. It has not been studied yet whether this is also the case for children as young as 6- to 7-years. 145 children aged 6-7 years participated in a…

If children fail to understand test instructions, measurements of their competence may be unfair and invalid. This is especially relevant for students with special educational needs (SEN) because they face greater challenges in comprehending instructions. Two interventions were designed to facilitate the comprehension of test requirements by…

This article examines the effects of social and ethnic classroom composition and tracking on students' school satisfaction as an indicator of well-being and socioemotional outcomes in school. Analyses were based on a longitudinal school achievement study in Hamburg (Germany) with a sample of 5,941 students in 331 classes in secondary school.…

Objective: A training intervention that aims to improve the problem-solving and organization skills of adolescents with attention-deficit/hyperactivity disorder (ADHD) has been investigated. Aim of this study was to examine the mechanisms of change that occurred during the intervention in an empirical trial. Method: Forty-nine adolescents with…

Attention-deficit/hyperactivity disorder (ADHD) is a highly prevalent psychiatric disorder in adolescence and results severe impairment. Few psychosocial interventions aim at ADHD in adolescence and are rarely evaluated in randomized controlled trials (RCTs). Therefore, an intervention combining adolescent-directed problem-solving and…