Validit(cid:455) refers to the (cid:862)truth-(cid:448)alue(cid:863) (cid:894)(cid:374)ot truth itself(cid:895) of a resear(cid:272)h proje(cid:272)t. Validity is the epistemological logic in the research process that produces the ontological truth value of the research findings (not absolute certainty) Takes different forms in the social fact and social constructivist models. Social facts model- measurement, internal, external, reliability. Measuring what you say you are measuring. Height or (cid:449)eight are (cid:373)easures (cid:449)ith high fa(cid:272)e (cid:448)alidit(cid:455), (cid:862)ge(cid:374)der(cid:863) or (cid:862)se(cid:454)(cid:863) i(cid:374) a(cid:374) i(cid:374)di(cid:272)ator that had high face validity for decades but is no longer the case. Criterion validity- using indicators and measures that have been reliably used by other scholars. Good example socioeconomic stats (ses)= income+ education+ occupational prestige, widely used in social and cultural research. Construct validity- how well ma measure conforms to theoretical expectations. If we expect that television watching and obesity is related to ses we would expect different results for television use and obesity from different socio- economic status groups.