What level of measurement are standardised psychological tests assumed to be at?
A) Nominal
B) Ordinal
C) Interval
D) Ratio

Question

Quizplus · Accepted Answer

Standardised psychological tests usually measure on an interval level of measurement. This is because the intervals between scores on these tests are assumed to be equal, and they have a meaningful zero point (e.g., a score of zero means the absence of the trait being measured). However, it is important to note that some psychological tests may also have items that measure on a nominal or ordinal level, but as a whole, the test will be considered as interval-level measurement.

What Level of Measurement Are Standardised Psychological Tests Assumed to Be