PSYC 2018H Lecture Notes - Lecture 5: Random Assignment, Statistical Conclusion Validity, Handsfree

• School: Trent University
• Department: Psychology
• Course: PSYC 2018H
• Professor: Kevin Peters

Document Summary

Experiment (cid:862)a resear(cid:272)h pro(cid:272)edure i(cid:374) (cid:449)hi(cid:272)h so(cid:373)e fa(cid:272)tor is (cid:448)aried, all else is held (cid:272)o(cid:374)sta(cid:374)t, a(cid:374)d so(cid:373)e result is (cid:373)easured(cid:863) Independent variables the one the experimenter manipulates or varies. Dependent variables variable that you measure for the outcome. Control group- do not get experimental treatment. Experimental group is used as a label for the first situation, in which the treatment is present. Dependent variable: behaviour measured as the outcome of an experiment. Two types of independent variables: 1) manipulated, 2) non-manipulated. At least two levels: no caffeine (0 mg) versus caffeine (200 mg, no caffeine is the control group (does not get the treatment, caffeine is the experimental group (gets the treatment) Situational variables: type of independent variable in which subjects encounter different environmental circumstances (e. g. , large versus small rooms in a crowding study. Task variables: type of independent variable in which participants are given different types of tasks to perform (e. g. , mazes that differ in level of difficulty)