Foundational Intro Psych vocabulary and concepts across major subfields.
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- What is a hypothesis?
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A testable prediction about the relationship between variables
- What is an independent variable?
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The variable manipulated by the researcher
- What is a dependent variable?
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The variable measured as the study outcome
- What is a control group?
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The group that does not receive the treatment being tested
- Define reliability in research
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Consistency of measurement across repeated tests
- Define validity in research
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Whether a study actually measures what it claims to measure
- What is a neuron?
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The basic cell of the nervous system that transmits information
- What is a neurotransmitter?
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A chemical messenger that transmits signals between neurons
- What does the hippocampus do?
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Forms new memories, especially episodic memories
- What does the amygdala do?
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Processes emotions, especially fear and threat responses
- What is neural plasticity?
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The brain's ability to change and form new neural connections
- What is brain lateralization?
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Hemispheric specialization where different brain regions handle different functions
- Distinguish sensation from perception
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Sensation is raw sensory input; perception is the interpretation of that input
- What is an absolute threshold?
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The minimum stimulus intensity needed to detect a stimulus 50 percent of the time
- What is sensory adaptation?
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Decreased sensitivity to a constant stimulus over time