In the history of psychology, the conjunction psycho-dynamics was a "testing stage" coining to the modern science of "psychodynamics". In the 1931 American Journal of Orthopsychiatry, it is stated, for instance, that “psycho-dynamics … enters into an ultimate picture of dysfunction”. In addition, it is argued that the Oedipus situation, in the psycho-dynamic view, is defined in terms of the “drives of the child”, rather than in terms of the parent-child interaction. Moreover, an hypothesized set of principles of psycho-dynamics and socio-dynamics are slated to be analogs of the principles of physical energetics. [1]

References
1. Lawrey, Lawson Gentry. (1931). American Journal of Orthopsychiatry, (pgs. 520, 604, 630) by the American Orthopsychiatric Association.