This type of reliability often helps researchers.Issues of research reliability and validity need to be addressed in methodology chapter in a concise manner.Reliability is assessed by Test-retest reliability. Validity is a judgment based on various types of evidence.It is a measure of the precision between the observers or of the measuring instruments used in a study. Validity is the extent to which the scores actually represent the variable they are intended to. Reliability is consistency across time (test-retest reliability), across items (internal consistency), and across researchers (interrater reliability).
In simple terms, if your research is associated with high levels of reliability, then other researchers need to be able to generate the same results, using the same research methods under similar conditions. It is noted that “reliability problems crop up in many forms.Reliable measures are those with low random (chance) errors. This type of reliability test has a disadvantage caused by memory effects.Reliability refers to the extent to which the same answers can be obtained using the same instruments more than one time. Then, comparing the responses at the two time points.
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Oliver, V, 2010, 301 Smart Answers to Tough Business Etiquette Questions, Skyhorse Publishing, New York USA
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