What type of love involves feelings of closeness and emotional attachment?

Background noise that affects cognition in the elderly is referred to as ______

Fill in the blank with correct word

Pavlov's procedure is referred to as classical because

a. it was developed during the classical period in the humanities. b. it categorized behaviors and stimuli into classes. c. Pavlov used classical methods of experimental physiology in his research. d. it was the first laboratory procedure used to study learning systematically. e. because his publications have now become classics in their own right.