psychodynamics

Concise Oxford English Dictionary © 2008 Oxford University Press:
psychodynamics/sʌɪkəʊdʌɪˈnamɪks/

▶plural noun [treated as sing.] the interrelation of the unconscious and conscious mental and emotional forces that determine personality and motivation.

■ the branch of psychology concerned with this.

– derivatives
psychodynamic adjective,
psychodynamically adverb.