The mental function of ________ remains a great mystery to neuroscientists

According to Freud, the energy that flows from the life instincts and drives the personality is called

a. the ego. b. the libido. c. Thanatos. d. the conscience.

Babies use vision to guide their reaching but can also reach accurately to an object in the dark, providing they see it before the lights go out. The types of cues babies are using in the dark are mostly _______________

a. tactile b. proprioceptive c. visual d. auditory