Steps in validating research instruments

Recall that a sample should be an accurate representation of a population, because the total population may not be available.

Development of a valid and reliable questionnaire is a must to reduce measurement error.

Groves (1987) defines measurement error as the "discrepancy between respondents' attributes and their survey responses" (p. Development of a valid and reliable questionnaire involves several steps taking considerable time.

Researchers chose which type of instrument, or instruments, to use based on the research question.

Examples are listed below: is the extent to which an instrument measures what it is supposed to measure and performs as it is designed to perform.

Unfortunately, validating a survey requires a lot more than that.

Dave Collingridge noticed the same phenomenon when he was a social sciences graduate student unable to find a professor or other faculty member who would or could help him with survey validation.Questionnaires are the most frequently used data collection method in educational and evaluation research.Questionnaires help gather information on knowledge, attitudes, opinions, behaviors, facts, and other information.Step 1: Establish Face Validity This two-step process involves having your survey reviewed by two different parties.The first is a group familiar with your topic who can evaluate if your questions successfully capture your topic.One of the proposed survey strategies you may have run across is the suggestion to validate the questions in your survey.

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