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Research Methods
Exam 3 - Chapters 7-9
10
Psychology
Undergraduate 4
03/04/2010

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Term
Manipulation
Definition
Systematically varying the level of an independent variable in an experiment, with the goal of seeing whether doing so has any effect on the measured level of a dependent variable.
Term
Matching
Definition
A method of assigning participants to experimental conditions.
Term
Random Assignment
Definition
A technique for assigning participants to different conditions in an experiment.
Term
Procedural Confounds
Definition
A confound that occurs in a laboratory experiment or quasi-experiment when a researcher mistakenly allows a second variable to vary long with a manipulated variable.
Term
Operational Confound
Definition
A confound that occurs when a measure designed to assess a specific construct such as self-esteem, time pressure, or happiness inadvertently measures something else as well.
Term
Semantic Priming
Definition
The finding that people recognize most words more quickly than usual when they have just been exposed to words that have a similar meaning.
Term
Noise
Definition
An extraneous variable in an experiment that (a) influences the dependent variable but that (b) is evenly distributed across experimental conditions.
Term
Mundane Realism
Definition
The degree to which the physical setting in an experiment is similar to the real world setting(s) in which the experimenter's independent and dependent variables are most likely to operate.
Term
Experimental Realism
Definition
The degree to which the subjective experiences of research participants are realistic or psychologically meaningful.
Term
Manipulation Check
Definition
A measure taken to see if participants in different experimental conditions truly experienced the different levels of the independent variable that the researcher hoped to manipulate.
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