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Agreement among four models used for diagnosing learning disabilities
Briley Proctor1, Frances Prevatt
1Florida State University, Tallahassee 32306-4453, USA.
Journal of Learning Disabilities
|October 23, 2004
Summary
Different models for diagnosing learning disabilities (LD) yield varied results. Even when models identify similar numbers of students, the specific individuals diagnosed with LD differ significantly across approaches.
Area of Science:
- Psychology
- Educational Psychology
- Neuropsychology
Background:
- Diagnosing learning disabilities (LD) is complex, with various models proposed.
- Discrepancy models are commonly used but their agreement is not well-established.
Purpose of the Study:
- To compare the diagnostic agreement among four distinct models for identifying learning disabilities.
- To evaluate the consistency of LD diagnoses across different theoretical frameworks.
Main Methods:
- The study analyzed data from 170 clinic-referred university students.
- Four models were compared: simple discrepancy, intraindividual, intellectual ability-achievement, and underachievement.
Main Results:
- The simple discrepancy model identified more students with LD than the other three models.
- Highest agreement was between intraindividual and intellectual ability-achievement models (70%); lowest between simple discrepancy and underachievement models (48%).
- Only two of six model comparisons showed significant correlations.
Conclusions:
- Significant variability exists in learning disability diagnoses across different models.
- The choice of diagnostic model impacts which students are identified with LD, even with similar overall numbers.