Attachment therapy is primarily based on Robert Zaslow's rage-reduction therapy from the 1960s and '70s and on psychoanalytic theories about suppressed rage, catharsis, regression, breaking down of resistance and defence mechanisms. Zaslow, Tinbergen, Martha Welch and other early proponents used it as a treatment for autism, based on the now discredited belief that autism was the result of failures in the attachment relationship with the mother. This form of treatment differs significantly from evidence-based attachment-based therapies, talking psychotherapies such as attachment-based psychotherapy and relational psychoanalysis.