A Professor Computes the Mean Difference in Exam Scores Before

question 39

Multiple Choice

A professor computes the mean difference in exam scores before and after a lecture as 9.0 ± 14.5 (M_D ± S_D) ,and this difference was significant.What is the effect size for this result using estimated Cohen's d?

• A) d = 0.62 (medium effect)
• B) d = 1.61 (medium effect)
• C) d = 0.62 (large effect)
• D) d = 1.61 (large effect)

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Definitions:

Conformity

The act of matching attitudes, beliefs, and behaviors to group norms, politics, or societal expectations.

Group Members

Individuals who belong to a specific social group or organization sharing common goals, interests, or identities.

Social Influence

Group impact on others’ decisions.

Commodification

Commodification is the transformation of goods, services, ideas, or people into commodities or objects of trade, often emphasizing the market value over other values.