PSYB01H3 Lecture Notes - Lecture 5: Observational Error, Internal Validity, Internal Consistency
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Behavioral trace behavior that you leave behind without knowing (ex. music) Behavioral choice give options and see what you prefer. Neurobiological assessments focus on brain maybe look at brain activity. Construct definition, number of items, relatedness of items: consistency of methods (ex. Lab setting, lab procedures, lab script, researchers, confederates, sample size) Bias in pa(cid:396)ti(cid:272)ipa(cid:374)ts" (cid:396)espo(cid:374)ses, (cid:271)ias i(cid:374) e(cid:454)pe(cid:396)i(cid:373)e(cid:374)te(cid:396)s" o(cid:271)se(cid:396)(cid:448)atio(cid:374)s: accuracy and generalizability of findings (ex. controlling for extraneous variables, inferring to the real world, reliability degree to which x is free of random error. Refers to consistency of a test or measurement. Random error non-systematic mistakes in measurement: misreading a questionnaire item, mistyping a response, observer looks away when coding behaviour. O = t + e: the e(cid:396)(cid:396)o(cid:396) (cid:271)e(cid:272)o(cid:373)es a pa(cid:396)t of (cid:449)hat (cid:449)e"(cid:396)e (cid:373)easu(cid:396)i(cid:374)g. Psyb01 research methods in psychology: o(cid:374)(cid:272)e (cid:449)e"(cid:448)e take(cid:374) a (cid:373)easu(cid:396)e(cid:373)e(cid:374)t, (cid:449)e ha(cid:448)e a(cid:374) e(cid:395)uatio(cid:374) (cid:449)ith t(cid:449)o u(cid:374)k(cid:374)o(cid:449)(cid:374)s. we (cid:272)a(cid:374)"t separate the relative contribution of the true value and error.
