This study investigated the effects of an older sibling's aid in an object sorting task on the younger sibling's conceptual style. Children aided by siblings used descriptive style less than children who worked alone; children aided by siblings four years older used inferential style more than children aided by siblings two years older. Children…

A sample of 43 boys and 43 girls (aged 32 to 63 months) was observed during interactions with a 13-month-old infant in a structured situation in a day care center. Attendance in an area surrounding an empty playpen, and behaviors in that area, were recorded on four preliminary days to adapt children to observers and measure baseline behavior; on…