After pairing the conditioned stimulus (CS) and unconditioned stimulus (US) in a series of conditioning trials, the organism learns to respond to the CS alone. This learned behavior is then termed the

To understand the relationship between stress and health, it is important to realize that

a. only certain types of stress can affect health. b. only chronic stress can affect health. c. stress can affect health, and health problems can create stress. d. DSM-5 does not include any health-related factors in its classification system.

The concept of mental age was introduced in

a. 1905. b. 1908. c. 1911. d. 1916.