“…Theories regarding etiology of dramatic rhythmic movements can be • Received in the Editorial Office on March 8, 1961. classified under the following general headings: autoerotism (3,12,24), aggression (8,9,10,11), motor release (4,13,14,16,18,19), parent-child relationships (1,8,20), intracranial irritations (2,8,9,10,21).…”