Childhood is a period when children start to define themselves, who they are and who they want to be. Children are great storytellers about themselves and recognize that they are independent of others. As a child's understanding of identity progresses with time, many factors are influenced by their relationships with friends and family. Occupational therapists wish to support children as they continue to create their identities and find their role as human beings. Play is one of the most common occupations for children and another area where children define a sense of self. Play is how many children form their first childhood friendships. Occupational therapists are interested in assessing play because it can help identify aspects of play that a child may have difficulties. Typically, occupational therapists who assess play look at five factors: the environment, skills, motivation, activities and approach. A variety of assessments are available to choose from, but often occupational therapists choose the most relevant for a particular child. Occupational therapists acknowledge the importance of play for childhood development and wellbeing.