Suppose I Am Interested in Knowing Whether Adults Who Are

question 49

Multiple Choice

Suppose I am interested in knowing whether adults who are very introverted at age 20 are still highly introverted at age 50. Which of the following statistical analyses will I be most likely to use?

• A) a comparison of average introversion scores for a sample of adults aged 20 and another sample aged 50
• B) a comparison of average introversion scores at age 20 and age 50 for the same adults assessed longitudinally
• C) an analysis of the average amount in introversion between any 2 measurements of the same people over time
• D) a calculation of the correlation between scores on the key variable at 2 time points in a group of subjects studied longitudinally between age 20 and age 50

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Definitions:

Discriminative Stimulus

A stimulus in operant conditioning that indicates the probability of consequence for a behavior; it signals whether reinforcement or punishment is likely to follow a specific response.

Reinforced

Strengthened or emphasized, often in the context of behavior strengthened by a reward in psychology.

Human Face

A unique feature of the front part of the head in humans that includes eyes, nose, mouth, and expressions.

Successive Approximations

A method in behavioral psychology where behaviors are gradually modified to achieve a desired behavior through small steps.