Postnatal is to after being born as _______ is to before being born

A drawback in using primary punishers and primary reinforcers in research is that:

a. they are not as effective as secondary reinforcers in conditioning procedures. b. using primary punishers or taking away a primary reinforcer is sometimes not ethical. c. the experimenter must first make sure that the stimulus has acquired reinforcing properties. d. they are more likely than other punishers and reinforcers to lead to superstitious behaviors.

Describe the major methods of brain imaging

What will be an ideal response?