How toddlers think with their hands: Social and private gestures as evidence of cognitive self-regulation in guided play with objects. Contributions of maternal executive function and caregiving to th...How toddlers think with their hands: Social and private gestures as evidence of cognitive self-regulation in guided play with objects. Contributions of maternal executive function and caregiving to the development of executive function across early childhood. Prospective relations between maternal autonomy support and child executive functioning: Investigating the mediating role of child language ability.