APSY2216 Lecture Notes - Lecture 10: Dependent And Independent Variables, Internal Validity, Microsoft Powerpoint

• School: Boston College
• Department: Counseling, Developmental, and Educational Psychology
• Course: APSY2216
• Professor: Thomson

Document Summary

Internal validity - completing material from last class. Internal validity - degree to which the results are due to the relationship between the variables in a study, Consider confounding variables - extraneous variable that you are not directly measuring that could impact. Threats to internal validity can be controlled through research design and statistics. Do your best to isolate the relationship. Threats to internal validity variable and some other variables as opposed to something else not measured. Confirming that the relationship is not due to something else. Observed differences on the dependent variable should be directly related to the independent. Good internal validity means rival hypotheses and alternative explanations are ruled out the dependent variable, hurts your ability to say that x y. Subject characteristics - characteristics of subjects account for observed relationships between. Mortality threat/attrition - loss of study subjects as study progresses. Location - location in which data are collected may create alternative explanations for results.