Creativity is a process of perception, the interaction of unconscious and conscious modes of thinking. The art therapist is involved with creative expression and making visual equivalents for inner feelings. By this process, the self is externalised; communicated through creativity, emotion is viewed in imagery, interpreted and acknowledged. Play, and the use of art forms, and religious practice, tend in various but allied ways towards a unification and integration of the personality. D. Waller and T. Dalley suggest that art therapy is a term that has been used to describe a collection of diverse practices held together fundamentally by their practitioners' belief in the healing value of image making. According to the British Association of Art Therapists, art therapy is a form of therapy in which the making of visual images –paintings, drawings and so forth –in the presence of a qualified art therapist contributes towards externalisation of thoughts and feelings that may otherwise remain unexpressed.