Counselor Education Comprehensive Exam (CECE) Practice Exam

T scores, z-scores, stanines, and deviation IQ are examples of what?

1. Percentile rankings

2. Scales of measurement

3. Standard scores

4. None of the above

The correct answer is: Standard scores

T scores, z-scores, stanines, and deviation IQ are all examples of standard scores. Standard scores are used in psychological testing and educational assessments to compare an individual's performance to a normative sample. They allow for meaningful interpretation of scores by placing them on a common scale, which helps to understand an individual's standing relative to others. For instance, a z-score indicates how many standard deviations a particular score is from the mean of the distribution, while a T score has a mean of 50 and a standard deviation of 10. Stanines divide the distribution into nine equal parts, and deviation IQ provides a score based on the standard deviation of mental performance relative to age peers. All these measures serve the purpose of standardizing results to facilitate comparisons and interpretations, making them central to the concept of standard scores within psychological assessment.