Gary Is a Researcher Interested in Self-Esteem

Gary is a researcher interested in self-esteem. He develops an instrument he names the "I am great questionnaire." He administers the survey and collects information from 500 middle school learners. He calculates a self-esteem score for each child in the study and then groups the students as low, medium, or high self-esteem. Given this scenario please answer the following questions.
-The instrument that Gary developed is an example of _______________ an) assessment.

A) affective
B) cognitive
C) projective
D) aptitude