Physical and cognitive effort discounting across different reward magnitudes: Tests of discounting models.
The effort required to obtain a rewarding outcome is an important factor in decision-making. Describing the reward devaluation by increasing effort intensity is substantial to understanding human preferences, because every action and choice that we make is in itself effortful. To investigate how rew...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2017-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC5536267?pdf=render |
| _version_ | 1819262868523057152 |
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| author | Wojciech Białaszek Przemysław Marcowski Paweł Ostaszewski |
| author_facet | Wojciech Białaszek Przemysław Marcowski Paweł Ostaszewski |
| author_sort | Wojciech Białaszek |
| collection | DOAJ |
| description | The effort required to obtain a rewarding outcome is an important factor in decision-making. Describing the reward devaluation by increasing effort intensity is substantial to understanding human preferences, because every action and choice that we make is in itself effortful. To investigate how reward valuation is affected by physical and cognitive effort, we compared mathematical discounting functions derived from research on discounting. Seven discounting models were tested across three different reward magnitudes. To test the models, data were collected from a total of 114 participants recruited from the general population. For one-parameter models (hyperbolic, exponential, and parabolic), the data were explained best by the exponential model as given by a percentage of explained variance. However, after introducing an additional parameter, data obtained in the cognitive and physical effort conditions were best described by the power function model. Further analysis, using the second order Akaike and Bayesian Information Criteria, which account for model complexity, allowed us to identify the best model among all tested. We found that the power function best described the data, which corresponds to conventional analyses based on the R2 measure. This supports the conclusion that the function best describing reward devaluation by physical and cognitive effort is a concave one and is different from those that describe delay or probability discounting. In addition, consistent magnitude effects were observed that correspond to those in delay discounting research. |
| first_indexed | 2024-12-23T20:04:32Z |
| format | Article |
| id | doaj.art-9c83d14d60204139bd3f612507f79a25 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-23T20:04:32Z |
| publishDate | 2017-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-9c83d14d60204139bd3f612507f79a252022-12-21T17:32:59ZengPublic Library of Science (PLoS)PLoS ONE1932-62032017-01-01127e018235310.1371/journal.pone.0182353Physical and cognitive effort discounting across different reward magnitudes: Tests of discounting models.Wojciech BiałaszekPrzemysław MarcowskiPaweł OstaszewskiThe effort required to obtain a rewarding outcome is an important factor in decision-making. Describing the reward devaluation by increasing effort intensity is substantial to understanding human preferences, because every action and choice that we make is in itself effortful. To investigate how reward valuation is affected by physical and cognitive effort, we compared mathematical discounting functions derived from research on discounting. Seven discounting models were tested across three different reward magnitudes. To test the models, data were collected from a total of 114 participants recruited from the general population. For one-parameter models (hyperbolic, exponential, and parabolic), the data were explained best by the exponential model as given by a percentage of explained variance. However, after introducing an additional parameter, data obtained in the cognitive and physical effort conditions were best described by the power function model. Further analysis, using the second order Akaike and Bayesian Information Criteria, which account for model complexity, allowed us to identify the best model among all tested. We found that the power function best described the data, which corresponds to conventional analyses based on the R2 measure. This supports the conclusion that the function best describing reward devaluation by physical and cognitive effort is a concave one and is different from those that describe delay or probability discounting. In addition, consistent magnitude effects were observed that correspond to those in delay discounting research.http://europepmc.org/articles/PMC5536267?pdf=render |
| spellingShingle | Wojciech Białaszek Przemysław Marcowski Paweł Ostaszewski Physical and cognitive effort discounting across different reward magnitudes: Tests of discounting models. PLoS ONE |
| title | Physical and cognitive effort discounting across different reward magnitudes: Tests of discounting models. |
| title_full | Physical and cognitive effort discounting across different reward magnitudes: Tests of discounting models. |
| title_fullStr | Physical and cognitive effort discounting across different reward magnitudes: Tests of discounting models. |
| title_full_unstemmed | Physical and cognitive effort discounting across different reward magnitudes: Tests of discounting models. |
| title_short | Physical and cognitive effort discounting across different reward magnitudes: Tests of discounting models. |
| title_sort | physical and cognitive effort discounting across different reward magnitudes tests of discounting models |
| url | http://europepmc.org/articles/PMC5536267?pdf=render |
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