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AP Psychology - Research Methods Flashcards

Advanced Placement Psychology
Enterprise High School, Redding, CA
All terms from Myers Psychology for AP (BFW Worth, 2011)

Terms : Hide Images
6501923488Hindsight BiasThe tendency to believe, after learning an outcome, that one would have foreseen it. (Also known as the I-knew-it-all-along phenomenon.)0
6501923489Critical ThinkingThinking that does not blindly accept arguments and conclusions. Rather, it examines assumptions, discerns hidden values, evaluates evidence, and assesses conclusions.1
6501923490TheoryAn explanation using an integrated set of principles that organizes observations and predicts behaviors or events.2
6501923491HypothesisA testable prediction, often implied by a theory.3
6501923492Operational DefinitionA statement of the procedures used to define research variables, or how we make the variables measurable; i.e., extroversion could be operationally defined by a score on a personality test. Necessary for replication of the study.4
6501923493ReplicationRepeating the essence of a research study, usually with different participants in different situations, to see whether the basic finding extends to other participants and circumstances.5
6501923494Case StudyAn observation technique in which one person is studied in depth in the hope of revealing universal principles.6
6501923495SurveyA technique for ascertaining the self-reported attitudes or behaviors of a particular group, usually by questioning a representative, random sample of the group.7
6501923496PopulationAll the cases in a group being studied, from which samples may be drawn.8
6501923497Random SampleA sample that fairly represents a population because each member has an equal chance of inclusion.9
6501923498Naturalistic ObservationObserving and recording behavior in naturally occurring situations without trying to manipulate and control the situation.10
6501923499CorrelationA measure of the extent to which two factors vary together, and thus of how well either factor predicts the other.11
6501923500Correlation CoefficientA statistical index of the relationship between two things (from -1 to +1).12
6501923501ScatterplotA graphed cluster of dots, each of which represents the values of two variables. The slope of the points suggests the direction of the relationship between the two variables.13
6501923502Illusory CorrelationThe perception of a relationship where none exists.14
6501923503ExperimentA research method in which an investigator manipulates one or more factors (independent variables) to observe the effect on some behavior or mental process (the dependent variable). By random assignment of participants, the investigator aims to control other relevant factors.15
6501923504Random AssignmentAssigning participants to experimental and control groups by chance, thus minimizing preexisting differences between those assigned to the different groups.16
6501923505Double-Blind ProcedureAn experimental procedure in which both the research participants and the research staff are ignorant (blind) about whether the research participants have received the treatment or a placebo. Commonly used in drug-evaluation studies.17
6501923506Placebo EffectExperimental results caused by expectations alone; any effect on behavior caused by the administration of an inert substance or condition, which the recipient assumes is an active agent.18
6501923507Experimental GroupIn an experiment, the group that is exposed to the treatment, that is, to one version of the independent variable.19
6501923508Control GroupIn an experiment, the group that is not exposed to the treatment; contrasts with the experimental group and serves as a comparison for evaluating the effect of the treatment.20
6501923509Independent VariableThe experimental factor that is manipulated; the variable whose effect is being studied.21
6501923510Confounding VariableA factor other than the independent variable that might produce an effect in an experiment.22
6501923511Dependent VariableThe outcome factor; the variable that may change in response to manipulations of the independent variable.23
6501923512ModeThe most frequently occurring score(s) in a distribution.24
6501923513MeanThe arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores.25
6501923514MedianThe middle score in a distribution; half the scores are above it and half are below it.26
6501923515RangeThe difference between the highest and lowest scores in a distribution.27
6501923516Standard DeviationA computed measure of how much scores vary around the mean score.28
6501923517Normal CurveA symmetrical, bell-shape that describes the distribution of many types of data; most scores fall near the mean (68 percent fall within one standard deviation of it) and fewer and fewer near the extremes.29
6501923518Statistical SignificanceA statistical statement of how likely it is that an obtained result occurred by chance.30
6501923519CultureThe enduring behaviors, ideas, attitudes, values and traditions shared by a group of people and transmitted from one generation to the next.31
6501923520Informed ConsentAn ethical principle that research participants be told enough to enable them to choose whether they wish to participate.32
6501923521DebriefingThe post-experimental explanation of a study, including its purpose and any deceptions, to its participants.33

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