A CROSS-SECTIONAL AND LONGITUDINAL-STUDY OF AGE EFFECTS OF ELECTROPHYSIOLOGICAL MEASURES IN HYPERACTIVE AND NORMAL-CHILDREN

  • 1 January 1984
    • journal article
    • research article
    • Vol. 19  (7) , 973-990
Abstract
Longitudinal and cross-sectional event-related potential, EEG power spectral and skin conductance level data were obtained from 138 hyperactive and 60 normal boys. An age-by-diagnosis interaction was found for several measures in the cross-sectional data and for all 3 types of measures in the longitudinal data. Findings emphasize the importance of age in electrophysiological studies of young children and strongly suggest an abnormal maturational process in hyperactive children.