In a Laboratory Experiment on Helping Behavior, Two Variables Are

question 13

Multiple Choice

In a laboratory experiment on helping behavior, two variables are manipulated: (1) others' presence (whether participants worked alone on a task or with others) and (2) type of task (whether participants were timed or untimed on the task) . The dependent measure is the number of seconds between someone's request for help and the participant's response. What type of experimental design is this?

• A) posttest-only control group design
• B) pretest-posttest control group design
• C) 2 × 2 factorial design
• D) 2 × 4 factorial design

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