PSYC 2360 Chapter 7: PSYCH 2360 - Chapter 8 Notes

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2360
• Professor: Harvey Marmurek

Document Summary

Covariation: when changes in one variable are associated with changes in another variable; part of determining causality. Temporal residence: when changes in the suspected cause (treatment) occur before changes in the effect (outcome). I. e. if you believe that changes in posture causes a change in hormone levels, you have to establish that body posture changes occur before hormone level changes. Extraneous variable: a factor other than the intended treatment that might change the outcome variable. These variables should be eliminate before establishing causality. Internal validity: the degree to which we can rule out other possible causal explanations for an observed relationship between the independent and dependant variables. Mundane realism: the degree to which a study parallels everyday situations in the real world. Two group design: an experimental design that compares two groups or conditions and is the most basic way to establish cause and effect, also known as a simple experiment.