Define Post Hoc Comparisons

question 124

Essay

Define post hoc comparisons.

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Definitions:

Pretest-Posttest Nonequivalent Groups Design

A quasi-experimental design involving two groups that are not randomly assigned, with both groups measured both before (pretest) and after (posttest) a treatment or intervention.

Posttest-Only Nonequivalent Groups Design

An experimental design in which different groups are compared only after the treatment or intervention, without a pretest comparison.

Pretreatment Differences

Variations among participants in a study that exist before the intervention or treatment is applied.

True Experimental Design

A research design that includes random assignment of participants to conditions and manipulation of an independent variable to determine its effect.