AP Psych Operational Definitions Flashcards
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AP Psych Operational Definitions Flashcards

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Questions and Answers

What is an operational definition?

  • An unrepresentative sample
  • The factor being studied in an experiment
  • A statement of the procedures used to define research variables (correct)
  • A flawed sampling process
  • What is a hypothesis?

    A testable prediction, often implied by a theory

    What is the independent variable?

    The experimental factor that is manipulated; the variable whose effect is being studied.

    What is the dependent variable?

    <p>The outcome factor; the variable that may change in response to manipulations of the independent variable.</p> Signup and view all the answers

    What is a random sample?

    <p>A sample that fairly represents a population because each member has an equal chance of inclusion.</p> Signup and view all the answers

    What is sampling bias?

    <p>A flawed sampling process that produces an unrepresentative sample.</p> Signup and view all the answers

    What is random assignment?

    <p>Assigning participants to experimental and control conditions by chance, thus minimizing preexisting differences between those assigned to the different groups.</p> Signup and view all the answers

    What is a correlation coefficient?

    <p>A statistical index of the relationship between two things (from -1 to +1).</p> Signup and view all the answers

    What is standard deviation?

    <p>A computed measure of how much scores vary around the mean score.</p> Signup and view all the answers

    What is a double-blind procedure?

    <p>An experimental procedure in which both the research participants and the research staff are ignorant about whether the participants have received the treatment or a placebo.</p> Signup and view all the answers

    What is internal validity?

    <p>Extent to which we can draw cause-and-effect inferences from a study.</p> Signup and view all the answers

    What is a control group?

    <p>In 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.</p> Signup and view all the answers

    What is an observational study?

    <p>Observes individuals and measures variables of interest but does not attempt to influence the responses.</p> Signup and view all the answers

    Study Notes

    Key Research Concepts in Psychology

    • Operational definition: Specifies procedures to define variables in research, ensuring clarity and replicability.
    • Hypothesis: A testable prediction based on a theory, guiding research questions and framing studies.

    Research Design Elements

    • Independent variable: The variable manipulated within an experiment to observe its effects.
    • Dependent variable: The outcome measured in an experiment, which may change due to variations in the independent variable.

    Sampling Techniques

    • Random sample: A sampling method where every member of the population has an equal chance of selection, enhancing representativeness.
    • Sampling bias: Occurs when the sampling process is flawed, leading to an unrepresentative sample and skewed results.

    Experimental Procedures

    • Random assignment: Allocates participants to groups by chance, minimizing preexisting differences and ensuring comparable groups.
    • Double-blind procedure: Both participants and research staff are unaware of who receives treatment or placebo, reducing bias in drug studies.

    Statistical Measures

    • Correlation coefficient: Numeric value ranging from -1 to +1 indicating the strength and direction of a relationship between two variables.
    • Standard deviation: A measure indicating how much scores deviate or vary from the mean, providing insight into data spread.

    Validity and Control

    • Internal validity: Reflects the extent to which a study can establish cause-and-effect relationships based on its design.
    • Control group: A baseline group in an experiment that does not receive the treatment, allowing comparison against the experimental group.

    Observational Studies

    • Observational study: Gathers data by observing subjects without intervening, allowing for the assessment of variables without influence.

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    Description

    Test your knowledge of key terms related to operational definitions in psychology. This quiz covers essential concepts like hypotheses, independent and dependent variables. Ideal for AP Psychology students preparing for exams.

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