Technical term in psychology referring to the interplay of conscious and unconscious mental forces.
The theory of psychodynamics originated with Freud.
This therapy is based on psychodynamics.
精神分析 (psychoanalysis) is a specific therapeutic method, while 精神力動 is the broader theoretical framework of mental dynamics.
Compound of 精神 (mind, psyche) and 力動 (dynamics, from 力 'force' and 動 'movement'), likely a calque of English 'psychodynamics'.