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Direct linkLehn, Hanne; Derks, Eske M.; Hudziak, James J.; Heutink, Peter; van Beijsterveldt, Toos; Boomsma, Dorret I. – Journal of the American Academy of Child and Adolescent Psychiatry, 2007
Objective: To study familial and nonfamilial environmental influences on attention problems and attention-deficit/hyperactivity disorder (ADHD) in monozygotic twins discordant and concordant-high and low for these traits. Method: Ninety-five twin pairs from The Netherlands Twin Register were selected. Longitudinal survey data were collected at 1,…
Descriptors: Foreign Countries, Environmental Influences, Behavior Problems, Motor Development
Peer reviewedWerry, John S.; And Others – Journal of Child Psychology and Psychiatry and Allied Disciplines, 1980
A double blind, placebo controlled, crossover study using methylphenidate as a standard and two doses of imipramine was carried out in 30 hyperactive children (mean age 8.5 years). Particular emphasis was placed upon imipramine's action on cognitive function, physiological function, and self-esteem, and upon dosage effects. (MP)
Descriptors: Age Differences, Children, Cognitive Ability, Comparative Analysis
