Psychology 1000 Lecture Notes - Lecture 4: Internal Validity, Master Control, Myelin

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14 Nov 2012
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Professor
September 20, 2012
Psychology Lecture 4
Biological Foundations
- More Research Design
- The Neuron
- Action Potential
Next Time: The Synapse *(know very well)*
Scan: p. 73 - 78
- What are some sources of bias in an experiment?
- What is the basic structure of a neuron?
- How do neurons "work"?
How to Measure Aggression
- Self-report
- Verbal attack
- Physical attack
- "Safe" attack
Threats to Validity
- Internal Validity
- degree to which experiment supports causal conclusion (want high internal
validity)
External Validity
- degree to which results can be generalized
- Demand Characteristics
-cues in experiment which help convey what your hypothesis is to participants
- they "help" the experimenter achieve they're hypothesis
- Geen & Berkowitz (1967)
- Experimenter Expectancy
-Experimenter "conveys" hypothesis to participants
- Intons-Peterson (1983)
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