SOAN 2120 Lecture Notes - Missing Data, Face Validity
18 Mar 2013
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Document Summary
Most common in survey research and other quantitative methods. Difficult to devise a single measure of complex concepts. Especially true with regard to attitudes and orientations. Researchers devise several items, each providing some indication of the variable e. g. depression the variable e. g. depression e. g. physically fit the variable e. g. depression e. g. physically fit e. g. compassion (feeling vs. action) E. g. marital status; # of children in a family. Some may require > 1 indicator of a variable. Some may involve a # of dimensions that calls for multiple indicators. Some may be concerned with degree to which a variable is present. When you make an index you loose information. A single indicator provides a valid and reliable measure of some variables. Other variables are more difficult and complex to measure. Way scores are assigned in each: index accumulate scores assigned to individual attributes scale assign scores to pattern of responses.
