The degeneration of which brain area is involved in both Parkinson's disease and Huntington's disease?

Identity diffusion is typically characterized by

apathy. foreclosure. following one's heart. commitment to a cause.

A researcher trains a dog to salivate to the sound of a bell by pairing the ringing of the bell with the presentation of meat. This type of learning is known as ______

a. classical conditioning c. vicarious learning b. operant conditioning d. cognitive learning