A researcher who studies a fixed group of people over a long period of time is, by definition, using the __________ method.

When Sperling conducted his classic research on sensory memory, he found that participants using the partial-report method demonstrated better recall than participants using the whole-report recall method

a. true b. false

In research reports, a statement that "the results of the

experiment were statistically significant" means that the difference must be large enough so that it would occur by chance in how many experiments out of 100? a. less than five b. less than 20 c. more than five d. more than 20