Coercive techniques, such as scheduled or enforced holding, may also serve the intended purpose of demonstrating dominance over the child. Establishing total adult control, demonstrating to the child that he or she has no control, and demonstrating that all of the child's needs are met through the adult, is a central tenet of many controversial attachment therapies. Similarly, many controversial treatments hold that children described as attachment–disordered must be pushed to revisit and relive early trauma. Children may be encouraged to regress to an earlier age where trauma was experienced or be reparented through holding sessions. Other features of attachment therapy are the "two-week intensive" course of therapy, and the use of "therapeutic foster parents" with whom the child stays whilst undergoing therapy. According to O'Connor and Zeanah, the "holding" approach would be viewed as intrusive and therefore non-sensitive and countertherapeutic, in contrast with accepted theories of attachment.