Which of the following statements is correct about hypothetical constructs?

A) They are useful inventions by researchers that have no physical reality.
B) They are easier to measure than personality variables.
C) They cannot be measured with personality tests.
D) They have poor reliability and validity.

Hypothetical constructs are concepts created by researchers to explain and understand psychological phenomena. They do not necessarily have a physical reality that can be easily measured, but they are still useful in developing theories and conducting research. Option B is incorrect because hypothetical constructs are not necessarily easier to measure than personality variables. Option C is also incorrect because hypothetical constructs can be measured using a variety of methods, including self-report measures and behavioral observations. Option D is generally untrue because the reliability and validity of a hypothetical construct depends on the specific measures used and the strength of the underlying theory.