This study examines associations between leisure reading and reading skills in data of 2,525 students followed from age 7 to 16. As a step further from traditional cross-lagged analysis, a random intercept cross-lagged panel model was used to identify within-person associations of leisure reading (books, magazines, newspapers, and digital…

This study investigated the cross-lagged associations between teacher-student relationships and problem behaviors in a sample of 440 Finnish students (half of them identified as being at risk of reading difficulties). The degree to which these associations were moderated by a child's gender, academic performance, risk for reading difficulties,…

This study investigated friend influence over mathematics achievement in 202 same-sex friendship dyads (106 girl dyads). Participants were in the third grade (around age 9) at the outset. Each friend completed a questionnaire describing interest in mathematics and a standardized mathematical reasoning assessment. Peer nominations provided a…

Research Findings: The purpose of this study was to identify the developmental trajectories of impulsive behavior among 378 Finnish children who were followed from kindergarten to 4th grade. In addition to ratings of children's impulsivity, the analyses included measures of motivation, cognitive skills, socioemotional adjustment, and…

The aim of the present study was to investigate children's achievement goal orientations and their relations to math achievement in the primary grades. The sample consisted of 179 children who were in the 2nd and 3rd grades during the first measurement and in the 3rd and 4th grades during the second measurement. Children's self-ratings were…