Skeletal maturity and cognitive development of 12- to 17-year-old males

The relationship between skeletal age and cognitive ability was examined in a probability sample representative of 12- to 17-year-old males in the United States. Skeletal age was measured by radiographic determination of bone maturation. Cognitive development was assessed by WISC Vocabulary and Block-design subtests. The analyses demonstrated a significant positive relationship between skeletal age and cognitive development, with chronological age controlled.