Carl Rogers: most influential scientist-practitioners, wants to understand the person internally, let the client lead the conversation, non-diagnostic approach, change the power differential, necessary and sufficient conditions (incongruence: conflict b/w person's self image and inner experiencing, congruence permits the "fully functioning person", attachment in childhood can affect these) -conditions of worth:
"I can't trust that I know" - over dependent and under dependent.
Fritz Perls: full force Gestalt movement, focus on here and now, constant evolution of improvement,
Six Central Themes
-personality has "poles"
-differentiate ourselves and others
-feeling, experiencing, bring to awareness