What does this research mean for the field?

Reward-related processes contribute to both dimensional and categorical differences between bulimia nervosa, its OSFED variant, and healthy controls, with both clinical groups exhibiting elevated reward sensitivity but differing in reward valuation-effort. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To determine whether trait and behavioural reward constructs differentiate bulimia nervosa from its other specified feeding or eating disorder variant and healthy controls, and to assess their relationship with symptom severity.

September 14, 2026European Eating Disorders Review

A Comparison of Bulimia Nervosa and Its OSFED Variant on Trait and Behavioural Indicators of Reward Constructs

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Authors

ZZZiyu (Ivan) Zhao IGInge E. Guerrero SASarrah I. Ali

Discussion

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Overview

Cross-sectional study uncovers distinct reward sensitivity and effort valuation profiles in women with bulimic disorders, indicating dimensional and categorical reward alterations.

Key Points

To determine whether trait and behavioural reward constructs differentiate bulimia nervosa from its other specified feeding or eating disorder variant and healthy controls, and to assess their relationship with symptom severity.
Assessed 349 women comprising 153 with bulimia nervosa (BN), 118 with other specified feeding or eating disorder BN variant (OSFED-BN), and 78 healthy controls.
Measured trait reward constructs using the Sensitivity to Punishment/Sensitivity to Reward Questionnaire (SPSRQ-Reward) and Behavioural Activation System-Drive (BAS-Drive) scales.
Evaluated behavioral reward valuation-effort (RV-e) for food and game incentives using progressive ratio tasks, analyzing outcomes through multinomial logistic regression and correlational analyses.
Both BN and OSFED-BN groups demonstrated significantly higher SPSRQ-Reward scores compared to controls but did not differ from each other, while OSFED-BN uniquely displayed higher food and game RV-e than controls.
Higher SPSRQ-Reward predicted increased odds of having BN or OSFED-BN versus control status and positively correlated with bulimic symptom frequency, whereas BAS-Drive predicted lower odds of both diagnoses.
Food RV-e was inversely associated with purging frequency across the clinical sample.

Cite This Study

Zhao et al. (2026) studied this question.

synapsesocial.com/papers/6aa7b3aa0926e14a848b2bb3 https://doi.org/10.1002/erv.70170

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September 14, 2026European Eating Disorders Review

A Comparison of Bulimia Nervosa and Its OSFED Variant on Trait and Behavioural Indicators of Reward Constructs

View Full Paper

Ask AI

Bookmark

Authors

ZZZiyu (Ivan) Zhao IGInge E. Guerrero SASarrah I. Ali

Discussion

Member takes

Overview

Cross-sectional study uncovers distinct reward sensitivity and effort valuation profiles in women with bulimic disorders, indicating dimensional and categorical reward alterations.

Key Points

To determine whether trait and behavioural reward constructs differentiate bulimia nervosa from its other specified feeding or eating disorder variant and healthy controls, and to assess their relationship with symptom severity.
Assessed 349 women comprising 153 with bulimia nervosa (BN), 118 with other specified feeding or eating disorder BN variant (OSFED-BN), and 78 healthy controls.
Measured trait reward constructs using the Sensitivity to Punishment/Sensitivity to Reward Questionnaire (SPSRQ-Reward) and Behavioural Activation System-Drive (BAS-Drive) scales.
Evaluated behavioral reward valuation-effort (RV-e) for food and game incentives using progressive ratio tasks, analyzing outcomes through multinomial logistic regression and correlational analyses.
Both BN and OSFED-BN groups demonstrated significantly higher SPSRQ-Reward scores compared to controls but did not differ from each other, while OSFED-BN uniquely displayed higher food and game RV-e than controls.
Higher SPSRQ-Reward predicted increased odds of having BN or OSFED-BN versus control status and positively correlated with bulimic symptom frequency, whereas BAS-Drive predicted lower odds of both diagnoses.
Food RV-e was inversely associated with purging frequency across the clinical sample.

Cite This Study

Zhao et al. (2026) studied this question.

synapsesocial.com/papers/6aa7b3aa0926e14a848b2bb3 https://doi.org/10.1002/erv.70170

Also Consider

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