Examlex
Describe the two-group approach to intellectual disability. What are some common characteristics of each group?
Test-retest Reliability
A measure of the consistency of a psychological test or assessment tool across time, assessing the stability of test scores on repeated applications.
Alternate Forms Reliability
The consistency of the results of two tests constructed in the same way from the same content domain, administered to the same participants.
Item-total Correlation
The correlation between scores on individual items and the total score on all items of a test or questionnaire.
Convergent Validity
A measure of the degree to which two different assessments of the same concept are correlated, indicating the validity of the constructs.
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