Question

________ should never be used to compute index scores, the FSIQ, the GAI, or the CPI

a) Standard scores
b) Raw scores
c) Z-scores
d) Percentile scores

Answer 1

Raw scores should not be used to calculate composite scores such as the FSIQ, GAI or CPI, as they do not account for the difficulty level or norms. Instead, standardized conversions like standard or scaled scores should be applied.

Step-by-step explanation:

Raw scores should never be used to compute index scores, the FSIQ (Full Scale Intelligence Quotient), the GAI (General Ability Index), or the CPI (Cognitive Proficiency Index). Instead, raw scores are typically converted to standard scores, percentile ranks, or other types of scale scores before being used in calculations for these composite scores. Raw scores represent the number of items that a person answered correctly on a test, which does not take into account the relative difficulty of the test or the norms established for the test population. Therefore, using them without conversion would not accurately reflect an individual's performance relative to a standardized comparison group.