PSYCH235 Lecture Notes - Lecture 2: Operationalization, Operational Definition, External Validity
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Social Psych—Research Methods—Lecture 2
Psychological Construct—attitude, self-esteem, extroversion; how do we measure thi
- something like an attitude… something that cant be seen..
Operational Definition—measure of the manipulation of the variable in a study
oExample: anxiety—how anxious people get in closed areas. How can you tell how
anxious people are?
oPhysiological: heart rate, sweating, fidgeting.
oif you allow people to leave the study, for example, we can measure anxiety
through how many people left.
Operationalization: turning things into operational definitions
How do you measure prejudice?
In one study, how far away people sat from a group/individual in a room of chairs can determine
who they are prejudice against.
Conceptual definition - a hostile attitude directed against an individual or a group
Operational definition - sitting distance (chair position)
Correlation is not causation
Ex. High social status, better health. Better health, higher social status. Does not mean one
necessarily causes the other, but there is a correlation between the two.
Allows for predictions between variables
Measures variables at the same time, not changing anything
Extent to which research yields clear casual information.
Higher in experimental research.
Extent to which results generalize beyond current sample, setting, etc
Higher in correlational research