Reliability is a prerequisite of validity.

Prepare for the GACE Special Education General Curriculum Combined Test (581) with access to flashcards and multiple choice questions. Each question comes with detailed explanations, helping you confidently pass your certification exam!

Multiple Choice

Reliability is a prerequisite of validity.

Explanation:
Reliability is about consistency, while validity is about whether a test measures the intended attribute. For a measure to be valid, it must first be reliable; if scores are inconsistent across occasions, items, or scorers, you can’t trust what the scores say about the construct, so validity cannot be established. In short, you need reliable results in order to make valid inferences from them. That’s why this statement is true: reliability is a prerequisite for validity. (Keep in mind, a test can be reliable but not valid if it consistently measures something else, but reliability by itself does not guarantee validity.)

Reliability is about consistency, while validity is about whether a test measures the intended attribute. For a measure to be valid, it must first be reliable; if scores are inconsistent across occasions, items, or scorers, you can’t trust what the scores say about the construct, so validity cannot be established. In short, you need reliable results in order to make valid inferences from them. That’s why this statement is true: reliability is a prerequisite for validity. (Keep in mind, a test can be reliable but not valid if it consistently measures something else, but reliability by itself does not guarantee validity.)

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