COMMERCE 3MA3 Chapter Notes - Chapter 6: Content Validity, Observational Error, Predictive Validity
8 Feb 2018
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Chapter 6: the concept of measurement and attitude scales. Measurement: the process of assigning numbers or labels to persons, objects, or events in accordance (cid:449)ith spe(cid:272)i (cid:272) (cid:396)ules fo(cid:396) (cid:396)ep(cid:396)ese(cid:374)ti(cid:374)g (cid:395)ua(cid:374)tities o(cid:396) (cid:395)ualities of att(cid:396)i(cid:271)utes. Rule: a guide, method, or command that tells a researcher what to do. A concept is an abstract idea generalized from particular facts. It is a category of thought used to group se(cid:374)se data togethe(cid:396) (cid:862)as if the(cid:455) (cid:449)e(cid:396)e all the sa(cid:373)e. (cid:863) Co(cid:374)st(cid:396)u(cid:272)t: pe(cid:272)i (cid:272) t(cid:455)pe of (cid:272)o(cid:374)(cid:272)ept that e(cid:454)ists at a highe(cid:396) le(cid:448)el of a(cid:271)st(cid:396)a(cid:272)tio(cid:374). Co(cid:374)stituti(cid:448)e de (cid:374)itio(cid:374): a state(cid:373)e(cid:374)t of the (cid:373)ea(cid:374)i(cid:374)g of the (cid:272)e(cid:374)t(cid:396)al idea of (cid:272)o(cid:374)(cid:272)ept u(cid:374)de(cid:396) stud(cid:455), esta(cid:271)lishi(cid:374)g its (cid:271)ou(cid:374)da(cid:396)ies; also k(cid:374)o(cid:449)(cid:374) as theo(cid:396)eti(cid:272)al, o(cid:396) (cid:272)o(cid:374)(cid:272)eptual, de (cid:374)itio(cid:374). Ope(cid:396)atio(cid:374)al de (cid:374)itio(cid:374): a state(cid:373)e(cid:374)t of p(cid:396)e(cid:272)isel(cid:455) (cid:449)hi(cid:272)h o(cid:271)se(cid:396)(cid:448)a(cid:271)le (cid:272)ha(cid:396)a(cid:272)te(cid:396)isti(cid:272)s (cid:449)ill (cid:271)e (cid:373)easu(cid:396)ed a(cid:374)d the process for assigning a value to the concept. Construct equivalence: deals with how people see, understand, and develop measurements of a particular phenomenon.
