PSY230H5 Lecture Notes - Lecture 3: Internal Consistency, Discriminant, Uncorrelated Random Variables

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19 Sep 2015
School
Department
Course
Fundamentals II: Causality and Validity
Relevance of this Lecture
This lecture explains the relation between
correlations and causality.
This lecture explains the distinction between
personality measures and personality constructs
(validity).
Iclicker question:
Correlation doesn’t prove causality!
A = true, B = false
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The Bermuda Triangel of Causality
-Correlation does not prove causality
-r= p1 + p2 + p3 *p4
-too many unknowns!
A B
C
p1
p2
p3p4
AB
r
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Height
Third
Variable
Height and Weight
Weight
?
?
??
r = .5
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