Unformatted text preview: between 0 and 1)
• The more/bigger/greater likelihood of A, the greater/less of/smaller of B Causal Relationships Nature:
• Weak vs. Strong
Positive vs. Negative Mediators • WHY does A cause B?
• A causes MEDIATOR which causes B Moderators
• Volume knobs on the AB relationship
When or what makes the AB relationship stronger or weaker? Correlation is NOT causation
Correlation Often two things show up together but they are not causing each other. Correlation is a necessary condition for causation, but not enough by itself. If A causes B then:
If A and B are correlated A comes before B ***There is nothing else that explain why A and B are correlated Much “proof” is based on studies of
a single group who have the same
experience Case histories: “Users of the safe injection site had lower in...
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- Fall '09
- Causality, Correlation does not imply causation, Safe injection site, causal relationships, Sandra Robinson