Validity And Reliability Of Measurement Instruments Used In Research Pdf

validity and reliability of measurement instruments used in research pdf

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How to Determine the Validity and Reliability of an Instrument

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. Carole L. Kimberlin, Ph. Winterstein, Ph.

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:.

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. Reliability is about the consistency of a measure, and validity is about the accuracy of a measure.

Validity and reliability of measurement instruments used in research.

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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Carole L. Kimberlin, Ph. Winterstein, Ph. Issues related to the validity and reliability of measurement instruments used in research are reviewed. 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.


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


Validity and reliability of measurement instruments used in research

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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. 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:.

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Reliability vs validity: what’s the difference?

2 COMMENTS

Rachel B.

REPLY

Validity and reliability are two important factors to consider when developing and testing any instrument e.

Dennis G.

REPLY

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

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