Related samples designs require fewer subjects than independent sample designs to achieve the same degree of statistical power

A large university is attempting to reduce student alcohol and nicotine use. A survey was distributed to all students, and the results were published in the student newspaper

Fewer students than anticipated drank and smoked, much to many students' surprise. The university conducted this research using the social norms approach. cross-sequential approach. cross-sectional approach. cohort approach.

Regarding short-term memory (STM), which of the following statements is FALSE?

a. Although information can be stored phonetically in STM, it is most often stored in images. b. In memory experiments, information in short-term memory is gone in 12 to 18 seconds without rehearsal. c. It is very difficult to do more than one task at a time in STM. d. STM is very sensitive to interruption, or displacement.