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ScientificResearch

ScientificResearch - Norms established standards of...

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Correlational Studies: Looking for Relationships Measuring the strength of a relationship between two variables. Positive correlation – high with high, low with low (IQ scores and grades) Negative correlation – high with low, low with high (dental problems and income) A correlation does not establish causation. Variables may be associated, but one may not necessarily cause another to occur. Experiments: Hunting for Causes Independent Variable – a variable that an experimenter manipulates. Dependant Variable – a variable that an experimenter predicts will be affected by manipulations of the independent variable. Control Condition – in an experiment a comparison condition in which participants are not exposed to the same treatment as in the in experimental condition. (control group vs. experiment) Random Assignments – a procedure for assigning people to experimental and control groups in which each individual has the same probability as any other of being assigned to a given group.
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