Differentiate between validity and reliability

This type of validity is called criterion-related validity and it consists of four sub-types:Д¬onvergent validity refers to the proximity of a measure to a concept that it is meant to measure, and to the extent that a measure is not measuring (or discriminating) against other concepts that it is not supposed to measure is called discriminant validity. Instead, it is evaluated by closely comparing the measuring technique to the constructвЂ™s conceptual description.Д«ased on empirical observations, empirical evaluation of validity analyses how well a particular measure corresponds to one or more external criterion. Content validity, like face validity, is rarely measured statistically. It is harder to ascertain face validity qualitatively.ДЄ measure of peopleвЂ™s attitudes about exercise would have to represent all three of these elements to have excellent content validity. Although face validity may be measured quantitatively, for example, by having a large group of people score a measure in terms of whether it seems to measure what it is supposed to measure. On the contrary, the self-esteem finger-length measurement method does not seem to be related to self-esteem and hence has minimal face validity. A questionnaire including such questions would therefore be of excellent face validity. It refers to how well a measuring method seems to measure the construct of interest вЂњon the face.вЂќ The majority of individuals would anticipate a questionnaire about self worth to contain questions regarding whether they believe they are a valuable person with good traits. According to this theoretical framework, A person has an optimistic response toward exercising if he or she develops positive attitude towards exercising, feels good about that physical activity, and actively does it. For example, consider that attitudes are often characterized as a combination of thoughts, feelings, and behaviors directed toward a certain object. If a researcher conceptually defines test anxiety as both sympathetic activation of the nervous system, which leads to jumpy emotions, and also of negative thoughts, then, his test of anxiety must contain antsy feelings as well as negative ideas.

The amount to which a measure вЂњcoversвЂќ the concept of interest is referred to as content validity. This kind of validity is referred to as translational validity and it consists of the following two subcategories:ДЄ panel of expert judges generally assesses translational validity by rating each item (indicator) on how well it fits the conceptualization of that concept. Validity theory focuses on how well to transfer or reflect the notion of a theoretical structure into an effective measure. The fact that the forefinger of one individual is one cm longer than the finger of another does nothing to give you greater appreciation of yourself. While this measure is exceptionally good in terms of test-retest reliability, it is totally invalid. However, there must be something more since a metric could be highly reliable, but without validity.Д¬onsider someone who believes that the size of peopleвЂ™s forefinger represents their self-worth and hence assesses the said attribute by placing a scale up to their forefinger. Scores are supposed to represent what they are meant to when a measure has excellent test-retest reliability and internal consistency.

Is a measure of compassion, for example, truly assessing compassion but not a separate construct like empathy? Validity may be measured using theoretical or experiential methods, and it is best to use both. To answer the question, what does valid mean? We can simply state that the amount to which a measure accurately characterizes the basic concept that it is meant to be measured is referred to as validity or construct validity. Validity and reliability go together in psychology or another social research.

Making sure your research is valid and reliable.

Difference between validity and reliability.

Convergent validity and Discriminant validity.

Differentiate between validity and reliability