Which of the following emotions appears to correspond to a universal facial expression?

If a student studies very hard in order to get good grades, the good grade is an example of __________

a) positive reinforcement. b) punishment. c) negative reinforcement. d) partial reinforcement.

The two major subsystems of the nervous system are the central nervous system and the

a. autonomic nervous system. b. sympathetic nervous system. c. peripheral nervous system. d. parasympathetic nervous system. e. somatic nervous system.