The response of participants who are well aware that they are being studied is considered as:

ADirected response

BIntentional response

CDesire effect

DReactive effect ✓ Correct

Correct answer: (D) Reactive effect

Explanation

A reactive effect is the changed response of participants who are well aware they are being studied.

Directed response is not a standard research term.

Intentional response is not a recognised concept in this context.

Desire effect is not an established research term.

The reactive effect threatens the natural validity of the observed behaviour.

The Hawthorne studies gave a classic demonstration of reactivity.

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