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van Hulst, Branko M.; de Zeeuw, Patrick; Bos, Dienke J.; Rijks, Yvonne; Neggers, Sebastiaan F. W.; Durston, Sarah – Journal of Child Psychology and Psychiatry, 2017
Background: Changes in reward processing are thought to be involved in the etiology of attention-deficit/hyperactivity disorder (ADHD), as well as other developmental disorders. In addition, different forms of therapy for ADHD rely on reinforcement principles. As such, improved understanding of reward processing in ADHD could eventually lead to…
Descriptors: Attention Deficit Hyperactivity Disorder, Task Analysis, Reinforcement, Therapy
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Pronk, Jeroen; Olthof, Tjeert; Goossens, Frits A. – Journal of Early Adolescence, 2015
This study investigated personality correlates of early adolescents' tendency to either defend victims of bullying or to avoid involvement in bullying situations. Participants were 591 Dutch fifth- and sixth-grade students (X-bar[subscript age] = 11.42 years). Hierarchical regression models were run to predict these students' peer-reported…
Descriptors: Personality Traits, Correlation, Bullying, Victims
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Mollenhorst, Gerald; Volker, Beate; Flap, Henk – Social Forces, 2008
Social contexts in which confidants get to know each other affect the composition of their personal networks, inter alia the similarity among confidants. Results from analyses on a representative sample of the Dutch population between 18 and 65 years of age (SSND 2000), support the idea that differences in similarity among confidants can be…
Descriptors: Intimacy, Social Influences, Context Effect, Interpersonal Relationship
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De Bruyn, Eric E. J.; van den Bercken, John H. L. – International Journal of Behavioral Development, 1982
The performances of five- and six-year-old children on several motivation tasks (causal attribution, affective self-motivation, goal setting, and perception of task difficulty) were compared in order to determine the emergence of motivation as a self-reinforcing system in young children. (MP)
Descriptors: Achievement Gains, Age Differences, Comparative Analysis, Difficulty Level