PSY 203 Lecture Notes - Lecture 1: Null Hypothesis, Theoretical Definition, Confounding
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A series of steps to gather knowledge and to be as objective as possible. Identifying a problem: form a hypothesis/prediction, a good hypothesis can be falsified, null hypothesis. Advantages of the scientific method: trying to gathe(cid:396) o(cid:271)je(cid:272)ti(cid:448)e e(cid:448)ide(cid:374)(cid:272)e (cid:894)data(cid:895); it(cid:859)s as o(cid:271)je(cid:272)ti(cid:448)e as possi(cid:271)le; f(cid:396)ee f(cid:396)o(cid:373) (cid:271)ias, self-correcting, through replication, if there is something wrong, others can help correct the mistakes. Goals of the scientific method: describe the world around us, predict (next stage, explain how something works, control, how to fic something. Theoretical definition: definition of a phenomena in abstract/general terms, cannot argue about it. Operational definition: how the experimenter defines a phenomenon, can argue about it; where criticism comes from. Independent variable (iv): manipulated variable: dependent variable (dv): measured variable, control variable (cv): things experimenter controls- random assignment & blind/double blind procedure, u(cid:374)(cid:272)o(cid:374)t(cid:396)olled (cid:448)a(cid:396)ia(cid:271)le (cid:894)ucv(cid:895): (cid:272)a(cid:374)(cid:859)t (cid:272)o(cid:374)t(cid:396)ol e(cid:448)e(cid:396)(cid:455)thi(cid:374)g!!! (cid:858)(cid:859)co(cid:374)fou(cid:374)di(cid:374)g (cid:448)a(cid:396)ia(cid:271)le .
