PSYB01H3 Lecture Notes - Lecture 6: Intravenous Therapy, Ice Cream, Confounding
Document Summary
A demonstration: the taste test before coca cola vs pepsi. Not good experiment because many things she talked may affect the results of the experiment. Reminding of relationships b/t variables like height and weight; the pet ownership and wealth: eating bbreakfast are positively related to academi performance in school age children, eating disorders and wtching soap in teenaged famales. The correlation only tells you the two are correlated but not the causal. Direction of influence problem: there are may be two different directions: for ex: class attendance and grades. It could be higher attendance make a higher grade, but also, the students with higher grade are more likely to attend classes. Third variable problem: for ex:positive mood and charitable donations. But there may be a 3rd variables like the day after they got the payment are more likely to donate: ice cream and drawning:
