The APSAC Task Force stated that proponents of attachment therapy correctly point out that most critics have never actually observed any of the treatments they criticize or visited any of the centers where the controversial therapies are practiced. Proponents argue that their therapies present no physical risk if undertaken properly and that critics' concerns are based on unrepresentative occurrences and misapplications of techniques, or misunderstanding by parents. Holding is described as gentle or nurturing and it is maintained that intense, cathartic approaches are necessary to help children with attachment disorders. Their evidence for this is primarily clinical experience and testimonials.