Evidence for early acquisition of visual organization ability: A developmental study

This study presents normative data on the Hooper Test of Visual Organization for 434 normally developing children within the context of adequate confrontation naming, as measured by the Boston Naming Test. Age and gender differences were observed. Children's capacity to identify common objects from fragmented visual information approached borderline adult levels by the age of 6. The boys attained adult performance levels by age 12, but the girls did not reach these adult levels at any age. This suggests that visual organization ability may have a longer developmental course in girls than in boys. A reordered Children's version of the Hooper is proposed based on item analyses of the 218 boys' responses.