Hull defined ____ as the number of reinforced pairings between a stimulus and a response.?

Baby Zima keeps his eyes on nearby adults, anxiously watching their every move. He rarely smiles at his caregivers. Zima's weight, height, and head circumference are substantially below age-related growth norms

Zima and his mother have a disturbed parent–infant relationship. Zima may be suffering from A) growth faltering. B) psychosocial dwarfism. C) iron-deficiency anemia. D) food insecurity.

Two-year-old Eleanor helped to put all the toys away after playing at a friend's house. This behavior is a good example of the concept called:

a. reciprocity b. deferred imitation c. synchrony d. prosocial behavior