The term _____ refers to the sudden recovery of a conditioned response during an extinction procedure when a _____ stimulus is introduced

Which of the following is a true statement about Alzheimer's disease?

A. It is a gradual decline in multiple cognitive deficits, not just problems with memory. B. Changes in mood are rarely seen. C. Deterioration into a vegetative state occurs in two years or less. D. The first symptoms involve delusions and assaultive behavior.

Shaun holds his finger up in front of his eyes at arm's length and focuses on the image. He slowly moves the finger toward his eyes, focusing his eyes to maintain a single image. As he does this, Shaun experiences muscular tension in his eyes. This is an example of which depth perception cue?

a. retinal disparity b. shadowing c. convergence d. relative size e. interposition