Psychosocial adjustment: Child behavior
hyperactivity
To assess the children’s emotional and behavioral problems during the last 12 months, the Strengths and Difficulties Questionnaire (SDQ) is utilized. On a 3-point Likert scale ranging from 0 “not true” to 2 “certainly true”, children are asked to rate problems relating to the subscales hyperactivity (with Cronbach’s α = .87) and conduct problems (α = .73) [