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Lecture 7

PSYC 3014 Lecture Notes - Lecture 7: Internal Validity, Scientific Method, Effect Size


Department
Psychology
Course Code
PSYC 3014
Professor
Russell Jones
Lecture
7

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Chapter 4
Tuesday, September 20, 2016
2:36 PM
Examining Abnormal Behavior
oWhat problems cause distress or impair function?
oWhy do people behave in unusual ways?
oHow can we help them develop more adaptive behaviors?
Basic components of a Research Study
oHypothesis
"Educated Guess"
Scientific ones must be testable
Not all hypothesis are
oResearch Design
Method to test hypothesis
Independent and Dependent Variable
oStriking a balance in the relationship between:
Internal Validity
External Validity
oHypothesis Testing
oMinimizing confounds
Control Groups
Randomization
Analog models
Generalizability
Controlled environments
oConfound
Anything that threatens the integrity of the experiment or "internal
validity"
Want to be able to claim that changes can only be contributed to your
IV
Statiscical vs. Clinical Significance
oStatistical methods
Branch of math
Reduces biases
oStatistical vs. Clinical
Chance?
Meaningful?
Does one mean the other?
oEffect size and social validity
Studying Individual Cases
oCase Studies
Extensive observation
Detailed description
Foundation for early developments
Freud
Unique problems
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