This study examined the effect taekwondo training has on the level of aggression of children between the ages of 6 and 11 yr. 68 students (boys and girls) were tested using a behavior checklist designed to measure children's aggression. Analysis indicated a significant inverse relationship between the children's taekwondo rank and their aggression.

The Children's Embedded Figures Test and the Matching Familiar Figures Test were given to 28 children ranging in age from 5 to 12 yr. (M age = 9.3 yr.) to estimate the construct validity of the Children's Embedded Figures Test. A significant correlation of .65 between age and number of correct embedded figures and a nonsignificant correlation of .32 between number of correct embedded figures and latencies to match familiar figures were found. Implications are examined in the light of earlier findings demonstrating the convergent validity of the Children's Embedded Figures Test.

Attention deficit disorder with hyperactivity (ADDH) children ( 2 3 boys and 5 girls) and 28 normal children (23 boys and 5 girls)were matched by age. The ADDH group had a mean score of 2.06 on the hyperactivity scale of the Parent Symptom Questionnaire; a mean score of 1.5 is accepted as the lower limit for establishing hyperactivity.