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Core Studies: Biological Area

Casey et al. (2011) neural correlates of delay of gratification: conclusions and evaluation

  • 3 things to know
  • Component 02

Overview

Recall questions on Casey et al.'s conclusions about the stability of self-control and when low delayers fail, and the evaluation of the longitudinal element, fMRI, sample, ecological validity, causation and applications.

What you need to know

Answer each one before you reveal it.

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Key term

Why can the brain differences not be said to cause poor self-control?

Key term

State the main conclusion about the stability of self-control.

Key term

Under what conditions do low delayers actually fail?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    State the main conclusion about the stability of self-control.

    Model answer

    Resistance to temptation is a relatively stable individual characteristic that can still be detected around forty years after it is first measured.

  2. 2

    Under what conditions do low delayers actually fail?

    Model answer

    Only when the temptation is emotionally or socially compelling; with neutral stimuli their self-control is normal.

  3. 3

    Give the main strength of the longitudinal element.

    Model answer

    Following the same individuals for four decades demonstrates real stability within people, rather than inferring it from comparing different age groups.

  4. 4

    Identify two weaknesses of the sample.

    Model answer

    Only a small self-selected fraction of the original cohort still took part, and they were largely middle-class Americans connected to one university, so the results may not generalise.

  5. 5

    Criticise the ecological validity of the task.

    Model answer

    Withholding a button press to a photograph of a smiling face is very different from resisting a real temptation such as food, spending or a drug.

  6. 6

    Why can the brain differences not be said to cause poor self-control?

    Model answer

    The groups were not randomly allocated and the imaging data are correlational, so the difference in activity could be a consequence of low self-control or could share a third cause with it.

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