Which types of test questions sometimes work best with memorization?

Which is not a characteristic of a controlled experiment?

(a) manipulation of the aspect of the environment in which you are interested (b) control of the aspects of the environment in which you are not interested (c) manipulation of the dependent variable (d) random assignment of subjects to groups

One of the major problems we encounter with autobiographical memory is that

A) most people cannot remember information from their childhoods. B) sometimes people are influenced by other people's interpretations of events. C) once the information is stored, we often have difficulty with retrieval. D) it is only for traumatic events.