______, or the ability to speak freely and openly about anything, is a cornerstone of Freud's treatment methods.

The theory of complementarity tends to apply to

a. specific traits b. personalities as a whole c. needs people share d. propinquity

External lighting conditions alter circadian rhythms via:

a. The retinohypothalamic pathway b. Changes in metabolism c. Sleep structures in the basal forebrain d. None of the above