Adding a reward increases the reinforcing value of fruit
Adolescents’ snack choices could be altered by increasing the reinforcing value (RV) of healthy snacks compared with unhealthy snacks. This study assessed whether the RV of fruit increased by linking it to a reward and if this increased RV was comparable with the RV of unhealthy snacks alone. Modera...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Cambridge University Press
2017
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/146239 |
| _version_ | 1855533420961071104 |
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| author | De Cock, Nathalie Vervoort, Leentje Kolsteren, Patrick Huybregts, Lieven Van Lippevelde, Wendy Vangeel, Jolien Notebaert, Melissa Beullens, Kathleen Goossens, Lien Maes, Lea Deforche, Benedicte Braet, Caroline Eggermont, Steven Van Camp, John Lachat, Carl |
| author_browse | Beullens, Kathleen Braet, Caroline De Cock, Nathalie Deforche, Benedicte Eggermont, Steven Goossens, Lien Huybregts, Lieven Kolsteren, Patrick Lachat, Carl Maes, Lea Notebaert, Melissa Van Camp, John Van Lippevelde, Wendy Vangeel, Jolien Vervoort, Leentje |
| author_facet | De Cock, Nathalie Vervoort, Leentje Kolsteren, Patrick Huybregts, Lieven Van Lippevelde, Wendy Vangeel, Jolien Notebaert, Melissa Beullens, Kathleen Goossens, Lien Maes, Lea Deforche, Benedicte Braet, Caroline Eggermont, Steven Van Camp, John Lachat, Carl |
| author_sort | De Cock, Nathalie |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Adolescents’ snack choices could be altered by increasing the reinforcing value (RV) of healthy snacks compared with unhealthy snacks. This study assessed whether the RV of fruit increased by linking it to a reward and if this increased RV was comparable with the RV of unhealthy snacks alone. Moderation effects of sex, hunger, BMI z-scores and sensitivity to reward were also explored. The RV of snacks was assessed in a sample of 165 adolescents (15·1 (sd 1·5) years, 39·4 % boys and 17·4 % overweight) using a computerised food reinforcement task. Adolescents obtained points for snacks through mouse clicks (responses) following progressive ratio schedules of increasing response requirements. Participants were (computer) randomised to three experimental groups (1:1:1): fruit (n 53), fruit+reward (n 60) or unhealthy snacks (n 69). The RV was evaluated as total number of responses and breakpoint (schedule of terminating food reinforcement task). Multilevel regression analyses (total number of responses) and Cox’s proportional hazard regression models (breakpoint) were used. The total number of responses made were not different between fruit+reward and fruit (b −473; 95 % CI −1152, 205, P=0·17) or unhealthy snacks (b410; 95 % CI −222, 1043, P=0·20). The breakpoint was slightly higher for fruit than fruit+reward (HR 1·34; 95 % CI 1·00, 1·79, P=0·050), whereas no difference between unhealthy snacks and fruit+reward (HR 0·86; 95 % CI 0·62, 1·18, P=0·34) was observed. No indication of moderation was found. Offering rewards slightly increases the RV of fruit and may be a promising strategy to increase healthy food choices. Future studies should however, explore if other rewards, could reach larger effect sizes. |
| format | Journal Article |
| id | CGSpace146239 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace1462392025-03-03T19:07:23Z Adding a reward increases the reinforcing value of fruit De Cock, Nathalie Vervoort, Leentje Kolsteren, Patrick Huybregts, Lieven Van Lippevelde, Wendy Vangeel, Jolien Notebaert, Melissa Beullens, Kathleen Goossens, Lien Maes, Lea Deforche, Benedicte Braet, Caroline Eggermont, Steven Van Camp, John Lachat, Carl foods adolescents body mass index health nutrition fruits snack foods Adolescents’ snack choices could be altered by increasing the reinforcing value (RV) of healthy snacks compared with unhealthy snacks. This study assessed whether the RV of fruit increased by linking it to a reward and if this increased RV was comparable with the RV of unhealthy snacks alone. Moderation effects of sex, hunger, BMI z-scores and sensitivity to reward were also explored. The RV of snacks was assessed in a sample of 165 adolescents (15·1 (sd 1·5) years, 39·4 % boys and 17·4 % overweight) using a computerised food reinforcement task. Adolescents obtained points for snacks through mouse clicks (responses) following progressive ratio schedules of increasing response requirements. Participants were (computer) randomised to three experimental groups (1:1:1): fruit (n 53), fruit+reward (n 60) or unhealthy snacks (n 69). The RV was evaluated as total number of responses and breakpoint (schedule of terminating food reinforcement task). Multilevel regression analyses (total number of responses) and Cox’s proportional hazard regression models (breakpoint) were used. The total number of responses made were not different between fruit+reward and fruit (b −473; 95 % CI −1152, 205, P=0·17) or unhealthy snacks (b410; 95 % CI −222, 1043, P=0·20). The breakpoint was slightly higher for fruit than fruit+reward (HR 1·34; 95 % CI 1·00, 1·79, P=0·050), whereas no difference between unhealthy snacks and fruit+reward (HR 0·86; 95 % CI 0·62, 1·18, P=0·34) was observed. No indication of moderation was found. Offering rewards slightly increases the RV of fruit and may be a promising strategy to increase healthy food choices. Future studies should however, explore if other rewards, could reach larger effect sizes. 2017 2024-06-21T09:06:18Z 2024-06-21T09:06:18Z Journal Article https://hdl.handle.net/10568/146239 en Cambridge University Press De Cock, Nathalie; Vervoort, Leentje; Kolsteren, Patrick; Huybregts, Lieven; Van Lippevelde, Wendy; Vangeel, Jolien; Notebaert, Melissa; Beullens, Kathleen; Goossens, Lien; Maes, Lea; Deforche, Benedicte; Braet, Caroline; Eggermont, Steven; Van Camp, John; and Lachat, Carl. 2017. Adding a reward increases the reinforcing value of fruit. British Journal of Nutrition 117 (4): 611-620. https://doi.org/10.1017/S0007114517000381 |
| spellingShingle | foods adolescents body mass index health nutrition fruits snack foods De Cock, Nathalie Vervoort, Leentje Kolsteren, Patrick Huybregts, Lieven Van Lippevelde, Wendy Vangeel, Jolien Notebaert, Melissa Beullens, Kathleen Goossens, Lien Maes, Lea Deforche, Benedicte Braet, Caroline Eggermont, Steven Van Camp, John Lachat, Carl Adding a reward increases the reinforcing value of fruit |
| title | Adding a reward increases the reinforcing value of fruit |
| title_full | Adding a reward increases the reinforcing value of fruit |
| title_fullStr | Adding a reward increases the reinforcing value of fruit |
| title_full_unstemmed | Adding a reward increases the reinforcing value of fruit |
| title_short | Adding a reward increases the reinforcing value of fruit |
| title_sort | adding a reward increases the reinforcing value of fruit |
| topic | foods adolescents body mass index health nutrition fruits snack foods |
| url | https://hdl.handle.net/10568/146239 |
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