Examines Japanese and American children's styles of processing computerized geometric matrices. Hypothesizes cultural differences for response latencies. Finds no difference in accuracy between the two groups but significant differences in response times for second- and fifth-graders. (MW)

This 4-year longitudinal study of logical reasoning found complex interrelationships among different cognitive processes of children ages 6 to 15. Piaget's stage theory is discussed in the introduction, with a focus on the concrete operational stage in middle childhood. In the study, a representative array of logical concept tasks and short-term…