Dr. starr is attempting to develop a new personality test. as part of the process, she needs to identify clusters of related items. for this she will need to apply: a. free association. b. defense mechanisms. c. factor analysis. d. unconditional positive regard.

C. factor analysis.

Explanation:  

Factor analysis: The term factor analysis is referred to as a statistical method that is used to demonstrate the variability of the correlated, observed variables concerning the possibly unobserved variables of lower number knows as factors.

Factor analysis examines joint variations concerning latent unobserved variables.

In other words, factor analysis is used to identify questions in any survey that reflect abstract variables or broader dimensions known as factors that are independent of one another.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

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