Click to increase image sizeClick to decrease image size Additional informationNotes on contributorsLyndal M. Bullock L. Juane Heflin is an assistant professor, Educational Psychology and Special Education, at Georgia State University in Atlanta, and Lyndal M. Bullock is Regent's Professor of Special Education at the University of North Texas, Denton, Texas.
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Heflin et al. (1999) studied this question.
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