PSC 41 Lecture 4: Lecture 4 - 4/13/17

• School: UC-Davis
• Department: Psychology
• Course: PSC 41
• Professor: Cross, Victoria

Document Summary

Variables have levels or values: some variables are measured in categories, variable: freshman housing. Levels: dorm or not: levels vary in quality or kind, levels are group labels or words, some variables are measured continuously, variable: time. Values: in milliseconds: values vary in quantity or amount (may be truly continuous or discrete), values are numbers along a scale. Individual differences of the participants: not under the e(cid:454)peri(cid:373)e(cid:374)ter"s (cid:272)o(cid:374)trol, participants are grouped according to their level or value, ex: intelligence, age, race, etc. Independent variables: manipulated, u(cid:374)der the e(cid:454)peri(cid:373)e(cid:374)ter"s (cid:272)o(cid:374)trol, participants are assigned a level or value. Variables in research example: which is the most effective therapeutic approach to treat depression, variable = therapeutic approach. Levels or values = talk therapy and medication: categorical, variable = depression. Is the predictor a pre-existing characteristic or is it manipulated: manipulated, h0: therapeutic approach is not related to depression. Non-directional: casual b/c manipulated predictor variable.