- April 7, 2013 . Some measures have clear relevance for a few very specific variables. In other words, if these items do measure a specific construct, then they need to converge. Testing for this type of validity requires that you essentially ask your sample similar questions that are designed to provide you with expected answers. Convergent Validity. However, the validity of self-reported adherence is compromised by recall errors for missed doses and socially desirable responding. Example. Measurement Validity Types. Divergent Validity – When two opposite questions reveal opposite results. To test the convergent validity of Scale, the researcher evaluates the correlation between Scale scores and answers to general queries asking the respondents to evaluate overall dependence and overall Influence of the Retailer. Competency measurements: testing convergent validity for two measures I want to make two cases here. simple measure of convergent validity is higher inter-item correlation between the items of a scale i.e. or convergent validity of a measure indicates the extent to which the measure assesses the construct that it is intended to assess (8). Sensitivity to change refers to the ability of an instrument to measure a change in state, regardless of whether the change is relevant or meaningful to a decision-maker (8). Convergent validity means two measures of constructs that theoretically should be related, are in fact related. Convergent validity, a parameter often used in sociology, psychology, and other behavioral sciences, refers to the degree to which two measures of constructs that theoretically should be related, are in fact related. There are several threats to construct validity. To assess construct validity in your dissertation, you should first establish convergent validity, before testing for divergent validity. In quantitative research instrument that is often used is in the form of a questionnaire. Divergent validity is important because it is common to come up with an operational definition for a construct that actually measures more than one construct. construct validity of a measure by correlating it with a number of other measures and arguing from the pattern of correlations that the measure is associated with these variables in theoretically predictable ways. Researchers John Cacioppo and Richard Petty did this when they created their self-report Need for Cognition Scale to measure how much people value and engage in thinking (Cacioppo & Petty, 1982) [1] . Convergent validity is a subcategory of construct validity. In quantitative research, you have to consider the reliability and validity of your methods and measurements.. Validity tells you how accurately a method measures something. Validity Validity in scientific investigation means measuring what you claim to be measuring. In a sense, these specific asso-ciations are “make-or-break” in terms of the convergent and discriminant validity Convergent validity is a subset of construct validity. Convergent validity is one type of validity that is commonly assessed for patient-reported outcome measures (PROMs). Again, any test that is valid must be reliable. Relationship between reliability and validity: There is no way that a test that is unreliable is valid. Here, the researcher’s aim is to find out whether the items he claims are measuring a particular construct are indeed measuring them. 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