PSYC 1010 Lecture Notes - Lecture 3: Naturalistic Observation, Confounding, Scatter Plot

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PSYC 1010 Full Course Notes
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PSYC 1010 Full Course Notes
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Experimenter bias or expectancy effects: self-fulfilling prophecy: something you thought turns out to be true. With the experiment, the researcher manipulates variables, tries to control other variables, and randomly assigns participants to the different groups (control and experimental groups). With the correlational method, however, variables are not manipulated or controlled. Rather, any naturally-occurring changes in the 2 variables of interest are measured. I(cid:374) other (cid:449)ords, (cid:455)ou"re (cid:374)ot i(cid:373)posi(cid:374)g a(cid:374)(cid:455)thi(cid:374)g, (cid:271)ut rather, are si(cid:373)pl(cid:455) (cid:373)easuri(cid:374)g (cid:1006) (cid:448)aria(cid:271)les as they are naturally occurring or existing, and seeing whether there is a relationship between them. (cid:862)correlatio(cid:374)(cid:863) (cid:373)ea(cid:374)s (cid:862)the relatio(cid:374)ship (cid:271)et(cid:449)ee(cid:374) t(cid:449)o thi(cid:374)gs. (cid:863) A scatterplot is a type of graph that represents correlational data: each dot in the scatterplot represents the value of two variables for that given person. When the dots are haphazardly scattered (no pattern), that is indicative of little or no relationship between both variables.

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