FRHD 3070 Lecture Notes - Lecture 16: Health Promotion, Dependent And Independent Variables

• School: University of Guelph
• Department: Family Relations and Human Development
• Course: FRHD 3070
• Professor: John Dwyer

Document Summary

Can the results of the program be explained by some alternative process that. The validity of inferences about whether the relationship between 2 variables is casual. Threats to internal validity: plausible alternative explanations for what causes the observed effect, i. e. frog jumping competitions: Need to use logic and common sense. History: any event that coincides with the intervention: i. e. effects of drugs study, i. e. people that use seatbelts and intervene, could be the intervention that made people use seatbelts more, or it could have been something else. Maturation: threat that some biological, psychological or emotional process within he person and separate from the intervention will change over time. Testing: effects due to repeated testing of participants over time. Instrumentation: any change that occurs over time in measurement procedures or devices. Regression to the mean regress towards the mean: i. e. flipping coin: we intervened, and there was greater self-esteem.