SOAN 2120 Lecture 15: Lecture 15

• School: University of Guelph
• Department: Sociology and Anthropology
• Course: SOAN 2120
• Professor: Scott Schau

Document Summary

Should be able to use the index for its intended purpose y. If an internal item analysis shows inconsistent relationships between items included in an index and the index itself -> something is wrong with the index. If the index fails to predict strongly the external validation items -> conclusion is ambiguous: choose between 2 possibilities: Index does not adequately measure the variable in question y y validation items do not adequately measure the variable and thereby do not provide a sufficient test of the index. Scale construction y not all indicators of a variable are equally important or equally strong: each item is going into a composite measure may have a different intensity in terms of the variable y. Scales offer more assurance of ordinality by tapping the intensity structures among the indicators y 4 scaling procedures: bogardus social distance scale, thurstone scales, likert scaling, guttman scalling.