The issue of a relationship between motor and cognitive development is an open one. Sternberg states that we are made up of three forms of intelligence, which require adequate space to function: analytical intelligence, creative intelligence and practical intelligence. During play, these three forms of intelligence operate together at the same time. In particular, creative and practical intelligence come into action during complex situations. There is also Gardner’s theory of body-aesthetic intelligence to consider, which proposes that some children are more naturally pre-disposed than others, for example in finding solutions to activity-based games or in creating new games. Other recent studies point out that some cognitive processes, such as concentration and memory, can be improved by practising certain motor activities.