Dr. Sparks is concerned because he gave Julie a new intelligence test that he personally designed and her scores do not seem very consistent. Which aspect of psychological testing is Dr. Sparks concerned with?
A) Validity
B) Self-report measures
C) Reliability
D) Falsifiability
Answer: C
Rationale: Reliability refers to how consistent and stable measurements are across multiple observations and points in time. In this example, the inconsistency of Julie's test scores indicates that the test is not reliable. Although it is likely that the test is also not valid (i.e., it does not really measure intelligence), Dr. Sparks' immediate concern is clearly with the reliability of the test.
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