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Thinking Critically With Psychological Science - AP Psychology, Chapter 1

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Term
Definition
Psychology   The scientific study of human and animal behavior and mental processes  
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APA ethical guidelines   A code of conduct of experiments established by the American Psychological Association  
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Wilhelm Wundt   Established the first psychology lab and founded structuralism  
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William James   Pioneered functionalism  
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Structuralism   A school of thought focusing on introspection  
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Functionalism   A school of thought focusing on the functions of thoughts/feelings  
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Introspection   Looking inward at your thoughts  
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Hindsight bias   When something seems obvious after it happens  
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Response bias   A range of biases that lead people away from providing accurate, truthful responses  
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Basic research   Builds psychology's knowledge base  
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Applied research   Applies psychology to practical problems  
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Biopsychosocial   Considers biological, psychological, and social/cultural factors  
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Case study   Studying one person in depth  
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Correlational study   Looks at the relationship between two or more variables that aren't under the researchers' control  
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Cross sectional study   Looks at a variable across age groups  
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Longitudinal study   When a group is studied for several years  
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Naturalistic observation   Observing organisms in their natural environment without trying to manipulate the situation  
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Survey/Interview/Questionnaire   Survey - looks at many cases with less depth. Two types: interview (completed in-person) and questionnaire (involves a form to fill out and mail back)  
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Operational definition   Defines research variables  
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Replication   Repeating an experiment  
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Placebo effect   When an individual's symptoms are reduced because of the belief that he or she is getting a treatment  
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Double-blind procedure   Neither the participants nor the researcher knows which group receives treatment  
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Experimenter bias   When the scientist influences the results to portray a certain outcome  
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Confounding variable   A variable (other than the independent) that could influence the dependent  
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Content validity   The extent to which a test measures what it is supposed to measure  
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Descriptive statistics   Statistics used to summarize data  
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Inferential statistics   Statistics used to make conclusions/inferences about an unknown aspect of a population  
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Factor analysis   Identifies factors that seem to define a common ability  
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Empirically derived   Something derived by testing a pool of items, then selecting factors that discriminate between groups  
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Illusory correlation   A perceived relationship that doesn't truly exist  
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Correlation coefficient   Measures the strength of a correlation between variables (r)  
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Normal distribuiton   The expected outcome when a sample is drawn from a large population (will fall in the shape of a bell curve)  
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Standard deviation   The average distance from the mean  
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Variance   How far from the expected value an actual value is  
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Skewed distribution   A set of data is skewed on the side where it's spread out (the tail)  
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Regression toward the mean   Data that is much higher or lower than the mean and will likely be closer if measured a second time  
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Z-score   Measures how many standard deviations away from the mean a certain value is  
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Null hypothesis   States the opposite of the real hypothesis  
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Statistical significance   A measure of how likely it is that an obtained result occurred by change  
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Split half reliablility   If a test is split in half, and the scores are consistent, it is more reliable  
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Informed consent   Participants in a study must know they are involved in research and give their permission  
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Debreifing   Participants must be told the purpose/results of a study  
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Biological approach   The applications of biological principles to psychology  
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Evolutionary approach   Explains how psychological traits factor in to natural selection  
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Psychodynamic   Focuses on getting in a person's head, says function is based on hidden thoughts and desires from childhood  
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Behavioral   Aims to interpret psychology via the way we act and understand how we learn/can change observable responses  
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Cognative   Studies the way we encode, process, store, and retrieve information  
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Humanistic   Focuses on how our current environment affects our good and bad decisions, includes group therapy  
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Social-cultural   Studies our interactions with others and focuses on how behavior varies across situations and cultures  
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