Affiliation:
1. Edward Burns is associate professor, division of professional education at the State University of New York at Binghamton. He received his PhD in special education from the University of Michigan. Address: Division of Professional Education, State University of New York at Binghamton, Binghamton, NY 13901.
Abstract
Several studies have indicated that the average IQ score of many learning disability samples is significantly below 100, although above the educable mental retardation range. The bivariate normal probability distribution was used to explain how selecting cases with achievement scores below a given z score cutoff (e.g., scores less than -1.0) and IQ scores above a given cutoff (e.g., IQ scores 80 or greater) can result in an average IQ score significantly below 100. Because of the relationship between achievement and IQ, as the correlation between achievement and IQ increases, the average IQ score of learning disability samples decreases. The bivariate normal probability distribution was illustrated by considering correlations of 0.0, .5, and 1.0.
Subject
General Health Professions,Education,Health (social science)
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献