Hartley believed that vibrations in the brain continued after the external stimulation that caused them had ceased. He called these lingering vibrations:

A soap opera character is unable to remember anything about the car that ran her down on the street and gave her a concussion. This is an example of ______

a. the serial position effect c. anterograde amnesia b. retrograde amnesia d. retroactive interference

Which of the following is the main advantage of experiments?

A) The researcher can make causal statements. B) The research is ecologically valid. C) The findings generalize to other situations. D) They allow the researcher to generate many hypotheses.