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Validity and Reliability of Questionnaires: Chapter 8

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Validity and Reliability of Questionnaires: Chapter 8

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Questions and Answers

What is the main purpose of validity in research investigations?

To ensure that the research investigation is providing answers to the research questions for which it was undertaken.

Which type of validity assesses the extent to which a measuring instrument accurately measures a theoretical construct it is designed to measure?

Construct validity

How is face validity determined, and why is it alone insufficient for establishing the validity of a test?

Face validity is determined by a review of the test items and not through statistical analyses. It is insufficient for establishing test validity because it is based on informal opinions and does not involve formal procedures.

What is the concept of validity in the context of research?

The ability of an instrument to measure what it is intended to measure. Signup and view all the answers

Define content validity and its significance in test evaluation.

Refers to the connections between the test items and the subject-related tasks. It ensures that the test evaluates only the content relevant to the field of study. Signup and view all the answers

Explain the difference between face validity and content validity in establishing the validity of a test.

Face validity is determined informally by anyone who looks over the test, while content validity is determined through formal procedures. Signup and view all the answers

Why is construct validity considered the most important type of validity?

It assesses the extent to which a measuring instrument accurately measures a theoretical construct it is designed to measure. Signup and view all the answers

What are the types of validity and how are they assessed?

Content, face, and construct validity. Content validity is assessed by connections between test items and subject-related tasks, face validity is determined informally, and construct validity is determined by correlating performance on the test with performance on a test for which construct validity has been determined. Signup and view all the answers

What does the term 'validity' refer to in the context of research investigations?

Whether or not a test measures what it intends to measure. Signup and view all the answers

What are the advantages of using a questionnaire as a method of data collection?

Less expensive, offers greater anonymity. Signup and view all the answers

What are the ideal requisites of a questionnaire according to the text?

Clear and easy to understand, easy to read and pleasant to the eye, developed in an interactive style. Signup and view all the answers

Define the term 'response rate' as mentioned in the text.

The percentage of people who respond to a survey or questionnaire. Signup and view all the answers

Why is face validity alone insufficient for establishing the validity of a test?

It does not provide evidence about the actual validity of the test, only the appearance of validity. Signup and view all the answers