Experimental Design in Psychology

The video explores the distinction between correlation and causation in psychological research, emphasizing the importance of experimental designs. It discusses three main designs: repeated measures, independent measures, and matched pairs, highlighting their strengths and weaknesses. The video uses a memory study to illustrate these concepts and evaluates famous experiments like the Stroop test, Loftus and Palmer's eyewitness memory study, and Bandura's aggression experiment. It concludes with findings on the best time for learning, suggesting evening study may enhance memory consolidation during sleep.

What is the primary goal of using experimental methods in psychological research?

• To increase participant engagement

• To identify relationships between variables

• To establish causality between variables

• To save time and resources

Which design is known for controlling individual differences by having all participants go through all conditions?

• Repeated measures design

• Matched pairs design

• Cross-sectional design

• Independent measures design

What is a potential drawback of the repeated measures design?

• It requires more participants

• It can lead to practice and order effects

• It is more expensive

• It does not control for individual differences

How does the independent measures design address the issue of practice effects?

• By using the same participants for all conditions

• By randomly allocating participants to different conditions

• By matching participants on key variables

• By conducting pretests

What is a key advantage of the matched pairs design?

• It is the least time-consuming design

• It eliminates all individual differences

• It requires fewer participants

• It controls for individual differences by matching participants

Which famous experiment used a matched pairs design to control for individual differences in aggression?

• Loftus and Palmer's eyewitness memory experiment

• Stroop experiment

• Milgram's obedience experiment

• Bandura's aggression experiment

According to research, when is learning most effective?

• At night

• In the afternoon

• In the evening

• In the morning