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Measuring Delay Discounting in Humans Using an Adjusting Amount Task
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Delayed monetary losses: Do different procedures and discounting measures assess the same construct?

Haoran Wan1, Leonard Green1, Joel Myerson1

  • 1Department of Psychological & Brain Sciences, Washington University in St. Louis, USA.

Behavioural Processes
|September 15, 2024
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Summary
This summary is machine-generated.

This study found that two methods for measuring how people discount delayed monetary losses are highly correlated. Both methods effectively assess the same underlying construct of loss discounting behavior.

Keywords:
Adjusting-amount procedureDelayed lossesDelayed losses questionnaireDiscounting

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Area of Science:

  • Behavioral Economics
  • Decision Science
  • Psychology

Background:

  • Assessing the discounting of delayed hypothetical monetary losses is crucial for understanding economic decision-making.
  • Existing methods, like the Adjusting-Amount procedure and the Delayed Losses Questionnaire, vary in their approach.
  • It remains unclear if these different procedures measure the same fundamental psychological construct.

Purpose of the Study:

  • To investigate whether the Adjusting-Amount procedure and the Delayed Losses Questionnaire assess the same underlying construct of discounting delayed monetary losses.
  • To compare the efficacy and consistency of these two distinct measurement tools.

Main Methods:

  • A sample of 431 online participants completed both the Adjusting-Amount procedure and the Delayed Losses Questionnaire.
  • Discounting was measured using both atheoretical (area under the curve, immediate-choice proportion) and theoretically based (log k) metrics.
  • Correlation analyses were performed to compare the results from the two procedures.

Main Results:

  • High correlations (all r > 0.72) were observed between the Adjusting-Amount procedure and the Delayed Losses Questionnaire across all discounting measures.
  • A significant majority of participants (72.2%) exhibited consistent discounting patterns across both procedures.
  • These consistent patterns suggest a shared underlying construct is being measured.

Conclusions:

  • The Adjusting-Amount procedure and the Delayed Losses Questionnaire are highly consistent in measuring the discounting of delayed monetary losses.
  • Both methods effectively capture the same core psychological construct related to how individuals value future losses.
  • These findings support the validity of using either procedure to assess loss discounting behavior.