Multi item scales construction

A type of attitude rating scale in which a number of statements are used to measure comprehensively a particular construct or concept. Here, the scale development begins with an underlying theory of the construct being measured. The next step is to generate an initial pool of scale items. From the pool, a reduced set of potential scale items is generated by the judgement of the researcher and other knowledgeable persons. Further reduction is done in a quantitative manner by applying certain relevant statistical techniques. Then the resultant scale is evaluated for reliability and validity. On the basis of assessment a final set of scale items is selected.