Perceptual exploration in twins.
D000367:Age Factors; D002648:Child; D002652:Child Behavior; D002657:Child Development; D002675:Child, Preschool; D004522:Educational Status; D005106:Exploratory Behavior; D005133:Eye Movements; D005260:Female; D005556:Form Perception; D005824:Genetics, Behavioral; D005838:Genotype; D006801:Humans; D008297:Male; D009048:Motor Skills; D010466:Perceptual Closure; D011247:Pregnancy; D011932:Reading; D014427:Twins; D014796:Visual Perception