The evidence base that examines the cognitive implications of playing is complex and not entirely consistent. However, there is substantial evidence overall to suggest that play is a natural way of building cognitive processes, assisting learning and can even help with more complex mental health issues. However, caution should be exercised when linking play to cognitive functioning, as this can lead to the ‘instrumentalising’ of play (Lester and Russell 2008). While research does indicate that play can help to foster specific skills, Lester and Russell argue that it should not be perceived simply as a tool for learning and that.