Explain the Rationale Behind the Kruskal-Wallis Test

question 40

Essay

Explain the rationale behind the Kruskal-Wallis test. Explain, in particular, why a large value of the test statistic suggests that the population means are not equal.

Illustrate how uncertainty-identity theory explains group identification under conditions of uncertainty.

Describe how existential threats, such as reminders of mortality, influence group cohesion and identity.

Understand the role of social identity theory in explaining group behavior and self-definition.

Analyze how social facilitation theory explains the effect of the presence of others on task performance.