__________ conditioning is the general term for shaping behavior through rewards and punishments

The difference threshold is also known as the ________

a. just noticeable difference. b. signal detection difference. c. absolute threshold. d. comparison threshold.

Sensory receptors for vision are located on a thin layer of tissue at the back of the eyeball that is called __________

a) the lens. b) the fovea. c) the cornea. d) the retina.