Measurement involves assigning numbers concepts

Assignment 3: Reliability and Validity in Research Instruments

Quality measurement in research is essential. Measurement involves assigning numbers to concepts, objects, events or situations following a set of rules derived by the researcher through instrumentation or the use of tools for measurement. These measurements should be accurate and consistent. Chapter 16 in Gray, Groces and Sutherland (2017) explains the way that validity and reliability can be achieved. Check out page 371. THIS ASSIGNMENT IS DUE BY END of WEEK 2

Attempt History

A researcher develops a new instrument to measure coping skills and conducts a pilot study to compare the new tool with an existing tool that measures this concept.

In a research study, ambulatory clinic nurses teach children with asthma how to monitor peak expiratory flow volumes and how to use metered-dose inhalers to determine whether asthma control scores improve. The researcher discovers inconsistencies in how these measures were taught and how well the children understood the concepts.

A researcher uses only one method of measurement to assess depression in older adults living in an assisted living facility.

A researcher evaluates whether a tool addresses the major elements of the construct being studied.

Degree to which the study results can be applied to the larger population