Psychology 2075 Quiz: Reliability of tests

• School: Western University
• Department: Psychology
• Course: Psychology 2075
• Professor: Dr.Mike

Document Summary

Repeated measurements should yield reasonably similar results. Consistency in measurement is essential to accuracy in measurement. Reliability refers to the measurement consistency of a test ( or of other kinds of measurement techniques) A correlation coefficient is a numerical index of the degree of relationship between two variables. The closer the correlation comes to +1. 00, the more reliable the test is. Validity refers to the ability of a test to measure what it was designed to measure. Content validity refers to the degree to which the content of a test is representative of the domain it"s supposed to cover. Criterion-related validity is estimated by correlating subject"s scores on a test with their scores on an independent criterion (another measure) of the trait assessed by the test. Construct validity is the extent to which there is evidence that a test measures a particular hypothetical construct.