PSYC 102 Lecture Notes - Lecture 5: Random Assignment, Internal Validity, Standard Deviation

• School: UBC
• Department: Psychology
• Course: PSYC 102
• Professor: Benjamin Cheung, Simon Lolliot

Document Summary

Psyc 102 lecture 5 cont"d from last lecture and research methods ii and ethics. Variable 2 but the opposite could also be true. Furthermore, it is possible that there"s a 3rd variable affecting both: experimental designs: examining cause and effect, independent variable (iv): variable that the researcher manipulates. Control group is not exposed to manipulation: dependent variable (dv): researcher measures; predicted to be influenced by manipulations of the iv. Experimental group: group listening to classical music. Control group: group not listening to classical music. Dependent variable: scores on intelligence test: participant assignment. In some studies, different people are in the experimental and control groups. In other studies, the same people are tested twice: one as the control group, once as the experimental group. Any variable that differs between the groups except for the independent variable. Improvement resulting from the mere expectation of improvement.