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Psychology Unit 2

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Term
Definition
Hindsight Bias   The tendency to believe, after learning an outcome that one would have foreseen it. (AKA the I-Knew-It-All-Along phenomenon)  
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Critical Thinking   Thinking that does not blindly accept arguments or conclusions. Rather, it examines assumptions, discerns hidden values, evaluates evidence, and assesses conclusions  
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Theory   An explanation using an integrated set of principles that organizes observations and predicts behaviors of events  
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Hypothesis   A testable prediction often implied by a theory  
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Population   All the cases in a group being studied, from which samples may be drawn  
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Random Sample   A sample that fairly represents a population because each member has an equal chance of inclusion  
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Naturalistic Observation   Observing and recording behavior in naturally occurring situations without trying to manipulate and control the situation  
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Correlation   A measure of the extent to which two factors vary together and thus of how well either factor predicts the other  
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Debriefing   The post experimental explanation of a study; including its purpose and any description, to its participants  
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Informed Consent   An ethical principle that research participants be told enough to enable them to choose whether they wish to participate  
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Culture   The enduring behaviors, ideas, attitudes, and traditions shared by a group of people and transmitted from one generation to the next  
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Statistical Significance   A statistical statement of how likely it is that an obtained result occurred by chance  
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Normal Curve   A symmetrical, bell-shaped curve that describes the distribution of many types of data; most scores fall near the mean and fewer and fewer near the extremes  
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Standard Deviation   A completed measure of how much scores vary around the mean score  
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Range   The difference between the highest and lowest scores of the distribution  
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Median   The middle score in a distribution; half the scores are above it and half below it  
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Mean   The arithmetic average of a distribution obtained by adding the scores and then dividing by the number of scores  
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Mode   The most frequently occurring score(s) in a distribution  
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Dependent Variable   The outcome factor; the variable that may change in response to manipulations of the independent variable  
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Cofounding Variable   A factor other than the independent variable that might produce and effect in an experiment  
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Independent Variable   The experimental factor that is manipulated; the variable that might produce an effect in the experiment  
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Created by: Zoebelle7
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