A researcher developed an instrument to measure self-esteem and administered it to a group of individuals who were intravenous substance abusers and to a group of people who were not,expecting to see significant differences in scores between the two groups.How should this method of establishing construct validity be categorized?

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The method described here, where a researcher administers an instrument to two contrasting groups (substance abusers and non-substance abusers) to see if there are differences in scores, is known as the contrasted-groups approach to establishing construct validity. The researcher is comparing scores between groups that are expected to differ in self-esteem, indicating the degree to which the measure distinguishes between the two groups.

A Researcher Developed an Instrument to Measure Self-Esteem and Administered