“…For example, prereaching infants given 'sticky mittens' to assist in obtaining and exploring objects showed advanced reaching and visual exploration behaviours compared with infants without such training (Libertus & Needham, 2010). Active experience with objects also increases infants' interest in the actions of other people with the same object (Hauf, Aschersleben, & Prinz, 2007), sensitivity to others' action goals (Gerson & Woodward, 2014), knowledge about affordances (Yang, Sidman, & Bushnell, 2010) and object individuation (Wilcox, Woods, Chapa, & McCurry, 2007). So infants' active exploration is essential to perceptual, motor and cognitive development.…”