1.2. Cognitive development and forms of play
Cognitive skills in this age span develop from initial sensorial perceptions as
a baby, to the ability of speech, and (by that) the ability of thinking around
the age of two. This development brings along an improvement of the 7
memory and an increase of the span of attention. The ability of thought
enables symbolic representation, i.e. the cognitive skill by which some entity
comes to represent something else (Feldman, 1997) (e.g. a stick becomes a
broom).