PS101 Lecture Notes - Lecture 3: Nocebo, Random Assignment, Confirmation Bias
Document Summary
Psychology is a science- he puts great emphasis on it. Experimenter bias: whe(cid:374) resear(cid:272)hers" pre(cid:272)o(cid:374)(cid:272)ei(cid:448)ed ideas (cid:272)ause the(cid:373) to fi(cid:374)d (cid:449)hat the(cid:455) e(cid:454)pe(cid:272)t to fi(cid:374)d. E. g. in the video games example, researchers might be a little more aggressive to get the desired results. Confirmation bias: can influence the participant or the researcher. E. g. , can be subtle- head nod, smile. Placebo effect: positive response to treatment due to expectations not the treatment itself, harmful effect because you think its going to make you sick, etc. Nocebo effect: beneficial effect to well-being. The cure for experimenter bias and placebo effects. Blind and double blind techniques: hire ras and remove experimenter. Selection bias: cure: random sampling/ random assignment. Experimenter bias: blind/ double blind protocols. Expect a distribution: normal distribution (bell curve) Give 2 related problems: describing (change in) the data, k(cid:374)o(cid:449)i(cid:374)g if the (cid:272)ha(cid:374)ge is (cid:862)real(cid:863) Used to give basic info about variable results. Describe spread: variance, standard deviation, range.
