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Unformatted text preview: Cognitive Neuroscience Cognitive Neuroscience
Characteristics of an experiment
Behavioral vs. physiological approaches
Research methods in cognitive neuroscience Characteristics of an
Control hold some factors constant, measuring
Randomization sampling assignment Characteristics of an
Experiment Control example: Alcohol affecting video
games, 2 groups: with and without alcohol.
Controls: amount of sleep, gender, what
they’ve eaten, etc.
-Randomization-minimizes factors you can’t
control, everyone has the same chance of
being chosen, eliminates bias -Indep. Variables can have levels (ex. amounts
of alcohol, gender, etc) Independent Variable manipulated by Investigator hypothesized cause of effect
Dependent Variable variable that is measured outcome Depends on the IV 1 Cognitive Neuroscience Dependent Variables
in Cognitive Psychology
Response Time time between presentation of a
stimulus and response by participant milliseconds (typically) measure of processing speed Processing speed- how long it takes to get a
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- Fall '08