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The Arc's Self-Determination Scale: Procedural Guidelines

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Sample Description 97<br />

<strong>Scale</strong> Descriptive Statistics 100<br />

Gender, Age and Type of Disability Effects 101<br />

Statistical Analysis of Gender<br />

Differences 101<br />

Summary of Gender Differences 102<br />

Statistical Analysis of Age-related Differences 102<br />

Summary of Age-related Differences 105<br />

Statistical Analysis of Disability-related<br />

Differences 105<br />

Summary of Disability-related<br />

Differences 107<br />

CHAPTER 7: Reliability and Validity 109<br />

Validity of <strong>The</strong> <strong>Arc's</strong> <strong>Self</strong>-<strong>Determination</strong><br />

<strong>Scale</strong> 109<br />

Concurrent-Criterion-related Validity 109<br />

Construct Validity 111<br />

Discriminative Validity 111<br />

Factorial Validity 111<br />

Other forms of Construct Validity 111<br />

Reliability of <strong>The</strong> <strong>Arc's</strong> <strong>Self</strong>-<strong>Determination</strong> <strong>Scale</strong> 112<br />

Internal Consistency Reliability 112<br />

Item Statistics by Domain 112<br />

REFERENCES 119<br />

CONVERSION TABLES 129<br />

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