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Psychology: History & Research Methods Flashcards

7 cards from real AP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Psychology: History & Research Methods flashcards as text

  1. In a normal distribution, approximately what percentage of scores fall within one standard deviation of the mean?

    Answer: 68%

    About 68% of scores fall within one standard deviation of the mean in a normal curve.

  2. Which measure of central tendency is most affected by extreme outliers?

    Answer: The mean

    The mean is pulled toward outliers because it accounts for every score's value.

  3. A skewed distribution caused by a few very high incomes would have what shape?

    Answer: Positively (right) skewed

    A few extremely high scores pull the tail to the right, creating a positive skew.

  4. Test-retest reliability refers to what quality of a measure?

    Answer: Consistency of results over repeated administrations

    Test-retest reliability measures whether a test yields consistent results across administrations.

  5. A measure that accurately assesses the concept it is intended to assess has high what?

    Answer: Validity

    Validity refers to the extent a test measures what it is supposed to measure.

  6. Which statistic describes how spread out a set of scores is?

    Answer: The standard deviation

    Standard deviation indicates the average distance of scores from the mean, showing variability.

  7. Tuskegee and similar studies led to the modern requirement that ethics committees review research. These committees are called what?

    Answer: IRBs (Institutional Review Boards)

    Institutional Review Boards (IRBs) evaluate proposed research to protect participants' rights and welfare.