Play and cognition
The earliest form of play is the discovery of pleasure in exploratory movement and social activity (Ellis 1973). Here the child repeats random movements or vocalisations which give pleasure. Social play, or people play as it can be referred to (Gerard 1986), begins when adults respond to the child's behaviours. The child enjoys the attention and tries strategies to repeat the experience. This leads to the earliest turn taking, when the adult copies the child's behaviour and the child repeats it. These early games may also involve hiding, such as 'peep bo', which develops awareness of object permanence.