A Researcher Reports a Significant Mean Difference in a Given $\eta$

question 25

Multiple Choice

A researcher reports a significant mean difference in a given population.If she computes both $\eta$ ² and $\omega$ ² to measure the effect size,then which estimate will be most conservative?

• A) \(\eta\)²
• B) \(\omega\)²
• C) It depends on the sample size.
• D) It depends on the value of the t statistic.

---

Definitions:

Festinger And Carlsmith

Researchers known for their 1959 cognitive dissonance experiment, which investigated the effects of forced compliance behavior on changing attitudes.

Cognitive Dissonance

A state of psychological conflict arising from holding conflicting beliefs or values, leading to feelings of discomfort and the motivation to achieve consonance.

Cognitive Dissonance Theory

A psychological theory that suggests that individuals experience discomfort (dissonance) arising from inconsistent attitudes, beliefs, or behaviors and are motivated to reduce this discomfort by changing their attitudes, beliefs, or actions.

Severe Initiations

The concept that undergoing difficult or intense initiation processes can increase individuals' valuation and commitment to a group.