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Essay on reliability and validity in research

The terms reliability and validity get paired together quite often, and while they are both important in assessing the effectiveness of a research design, the two terms actually assess two very different ideas. As example to differentiate the two, consider the following:. A ruler is a very reliable instrument. We can be very certain that if we were to use a ruler to measure your foot that assuming you have stopped growing we would be able to get the same results each time we measured your foot, even if we were to use different rulers. But imagine I were to then take this reliable instrument, the ruler, and try to determine your personality by measuring your foot length.

Reliability and Validity Essay

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We use cookies to give you the best experience possible. Introduction The most important step in planning of a research is choosing the research instrument or tool. The instruments selected to be used for research must be developed or selected carefully in order to suit the data analysis plan and the research design. This will ensure that research questions can easily be answered from the data collected Cochran et al Where proper research instruments have been used, the results realized are valid and also reliable.

Reliability and Validity of Measurement

Our orders are delivered strictly on time without delay. Assessment 1 requires you to produce a literature review of no more than 2, words, which researches specific business research issues in depth using appropriate literature paying particular attention to correct Harvard referencing and a logical development of conclusions which are based on your thorough evaluation of material you have gathered. We will have a lecture from the librarians and this will provide essential information. You may form your own study group to discuss the topic.
Evaluating human services is a task that can be very complex. People can have different interpretations of the same event. Another concern is that people are not always honest. Therefore, human services will gain from effective, high quality evaluations of data collection methods. This requires that the data collection methods supply accurate and dependable information.

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