Related Experiment Video
Updated: Jul 10, 2026

Advancing Dyslexia Assessment in Children Through Computerized Testing
Published on: August 16, 2024
Stability of scores for the Slosson Full-Range Intelligence Test
Thomas O Williams1, Ronald C Eaves, Suzanne Woods-Groves
1Department of Teaching and Learning, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA. thwilli1@vt.edu
Abstract:
The test-retest stability of the Slosson Full-Range Intelligence Test by Algozzine, Eaves, Mann, and Vance was investigated with test scores from a sample of 103 students. With a mean interval of 13.7 mo. and different examiners for each of the two test administrations, the test-retest reliability coefficients for the Full-Range IQ, Verbal Reasoning, Abstract Reasoning, Quantitative Reasoning, and Memory were .93, .85, .80, .80, and .83, respectively. Mean differences from the test-retest scores were not statistically significantly different for any of the scales. Results suggest that Slosson scores are stable over time even when different examiners administer the test.
More Related Videos
Related Concept Videos
Measures of Intelligence
Validity refers to how well a test measures what it claims to measure. An intelligence test should accurately assess intelligence rather than another characteristic, like anxiety. Criterion validity is one way to evaluate this; it...
Stability of structures
Spearman's Rank Correlation Test
Spearman's test calculates correlation by...
Reliability and Validity
The Bell Curve
This pattern applies to many human characteristics beyond intelligence, such as height. For example, if you...
Self-Report Tests of Personality

