Week 6.1 - Indexes, Scales & Typologies

Week 6.1 - Indexes, Scales & Typologies - Social...

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Social’Research’Methods SOC’293 2’October’2012 Indexes’and’Scales’(Book’ Defnition) Index:’a’type’oF’composite’measure’that’summarizes’and’ rank-orders’several’specifc’observations’and’represents’ some’more’general’dimension. Scale:’A’type’oF’composite’measure’composed’oF’several’ items’that’have’a’logical’or’empirical’structure’among’ them.’Examples’oF’scales’include’Bogardus’Social’ Distance,’Guttman,’Likert,’and’Thurstone’Scales.’ Indexes’and’Scales’ Index ’–’a’measure’in’which’a’researcher’adds’or’combines’ several’distinct’indicators’oF’a’construct’into’a’single’ score. Scale ’–’a’measure’in’which’a’researcher’captures’the’ intensity,’direction,’level,’or’potency’oF’a’variable’ construct.’(arranges’responses’on’a’continuum) Index’Construction:’4’Main’Steps Selecting’possible’items Examining’their’empirical’relationships Scoring Validating Selecting’Possible’Items
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FaceValidity :’frst’criterion’For’item’selection,’items’ included’in’an’index’need’to’seem’related IF’you’are’measuring’political’conservatism’your’items’should’ speak’to’this’idea Political’party’affiliation Approval’/’disapproval’oF’specifc’views’(as’held’by’well’known’conservatives’or’liberals’For’ example) Selecting’Possible’Items Unidimensionality:
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Week 6.1 - Indexes, Scales & Typologies - Social...

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