What were the independent (manipulated) and dependent (measured) variables? How did they measure the dependent variable(s) (self-report, observation, physiological)? Don’t forget the interview at the end!
Were the variables good measures of what Latané and Darley wanted to demonstrate? (Construct validity.) Did the study show internal validity? (See chapter 3 in Morling)
What did Latané and Darley control by having three passive confederates compared to one “real” participant?
What about the interview at the end—self report, observational, or physiological measurement? Was there any information about reliability or validity? Given how Latané and Darley used it, does reliability or validity matter?
Sample Solution