Validity And Reliability Of Measurement Instruments Used In Research Pdf

validity and reliability of measurement instruments used in research pdf

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Instrument is the general term that researchers use for a measurement device survey, test, questionnaire, etc. To help distinguish between instrument and instrumentation, consider that the instrument is the device and instrumentation is the course of action the process of developing, testing, and using the device.

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How to Determine the Validity and Reliability of an Instrument

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Kimberlin and A. Kimberlin , A. The process of developing and validating an instrument is in large part focused on reducing error in the measurement process. View PDF. Save to Library. Create Alert. Launch Research Feed.

Share This Paper. Background Citations. Methods Citations. Results Citations. Topics from this paper. Estimated Interpretation Process Social Sciences. Test-Retest Reliability Internal Consistency.

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Validity and reliability of measurement instruments used in research.

Instrument is the general term that researchers use for a measurement device survey, test, questionnaire, etc. To help distinguish between instrument and instrumentation, consider that the instrument is the device and instrumentation is the course of action the process of developing, testing, and using the device. Instruments fall into two broad categories, researcher-completed and subject-completed, distinguished by those instruments that researchers administer versus those that are completed by participants. Researchers chose which type of instrument, or instruments, to use based on the research question. Examples are listed below:. Example usability problems include:. Validity and reliability concerns discussed below will help alleviate usability issues.

Validity and reliability are two important factors to consider when developing and testing any instrument e. Attention to these considerations helps to insure the quality of your measurement and of the data collected for your study. Validity refers to the degree to which an instrument accurately measures what it intends to measure. Three common types of validity for researchers and evaluators to consider are content, construct, and criterion validities. Often times, when developing, modifying, and interpreting the validity of a given instrument, rather than view or test each type of validity individually, researchers and evaluators test for evidence of several different forms of validity, collectively e.

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Using tests or instruments that are valid and reliable to measure such con- structs is a crucial component of research quality. Index terms: Control.


Validity and reliability of measurement instruments used in research

Published on July 3, by Fiona Middleton. Revised on June 26, Reliability and validity are concepts used to evaluate the quality of research. They indicate how well a method , technique or test measures something.

Instrument, Validity, Reliability

The Research Fundamentals section comprises a series of articles on important topics in pharmacy research. These include valid research design, appropriate data collection and analysis, application of research findings in practice, and publication of research results. Articles in this series have been solicited and reviewed by guest editors Lee Vermeulen, M.

Measuring the Validity and Reliability of Research Instruments

Purpose: Issues related to the validity and reliability of measurement instruments used in research are reviewed. Summary: Key indicators of the quality of a measuring instrument are the reliability and validity of the measures. The process of developing and validating an instrument is in large part focused on reducing error in the measurement process. Reliability estimates evaluate the stability of measures, internal consistency of measurement instruments, and interrater reliability of instrument scores. Validity is the extent to which the interpretations of the results of a test are warranted, which depends on the particular use the test is intended to serve. The responsiveness of the measure to change is of interest in many of the applications in health care where improvement in outcomes as a result of treatment is a primary goal of research.

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PURPOSE Issues related to the validity and reliability of measurement instruments used in research are reviewed. SUMMARY Key indicators of the quality of a.


Evaluating the quality of measures

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