Generation of an Interval Metric Scale to Measure Attitude

This article discusses issues of scales in measuring attitude,demonstrates how a metric scale can be generated based on three main features, andpresents results from a repeated measurement survey to verify the generated scale. Thedesign of the generated metric scale is introduced and named Ruler and Option (RO). Thepopulation for repeated measurement survey was 1,870 bachelor students from a publicuniversity. Two sets of questionnaire (identical items), one with 7-point Likert scaleand another with RO scale, were distributed to a sample of 595 bachelor students chosenusing stratified random sampling method. Data were analyzed descriptively using SPSSversion 20 and structural equation modeling using AMOS version 21. Results showed thatdata from RO scale performed better than data from 7-point Likert scale in terms ofnumber of items per construct, factor loadings, squared multiple correlations, higherratio of degrees of freedom to number of parameters, and higher reliabilitycoefficients. In terms of validity coefficients, measurement models from both data setsattained almost the same level of discriminant and construct validity. Further studiesare recommended to elicit the strength and weakness of RO scale to identify thesituations where it is most suitable