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On the Optimality of Mental Accounting

Jarrod Burgh, Emerson Melo, Matthew Shum · 2026 · arXiv (Cornell University)

DOI: 10.48550/arxiv.2610.12587 · cited by 0 works (OpenAlex) · open-access PDF

Hindi

मानसिक लेखांकन को आमतौर पर आत्म नियंत्रण द्वारा समझा जाता है, और दो चरण बजट को अलग-अलग प्राथमिकताओं द्वारा विभाजित किया जाता है। हम विक्रेताओं की बाजार शक्ति पर आधारित तीसरे स्पष्टीकरण का प्रस्ताव देते हैं। एक उपभोक्ता जो एक श्रेणी में एक निश्चित संख्या के डॉलर खर्च करने का वादा करता है, इसमें इकाई-लास्टिक मांग होती है, इसलिए उस श्रेणी में एक विक्रेता मात्रा को प्रतिबंधित करके कुछ भी हासिल नहीं करता है। एक उपभोक्ता जो इसके बजाय एक निश्चित भौतिक मात्रा को लक्षित करता है, पूरी तरह से अयलास्टिक मांग करता है, एक ऐसा मामला जिसे एक मोनोपोलिस्ट प्रयोग कर सकता है। हम उन वादों का वर्णन करते हैं जो एक विक्रेता को कीमतों को चिह्नित

Machine translation (Meta M2M100); the English original follows.

Abstract

Mental accounting is usually explained by self-control, and two-stage budgeting by separable preferences. We propose a third explanation based on sellers' market power. A consumer who commits to spend a fixed number of dollars in a category has unit-elastic demand, so a seller in that category gains nothing by restricting quantity. A consumer who instead targets a fixed physical quantity has perfectly inelastic demand, a case that a monopolist can exploit. We characterize the commitments that remove a seller's incentive to mark up prices, and show that the fixed dollar budget is the least restrictive. We then show that what matters is budget rigidity rather than separability of preferences. A consumer who re-optimizes her category budget when prices change is insulated from market power only if categories are substitutes; a rigid budget insulates her in every case. Mental accounting can therefore be read as a commitment device against markups, a rationale that is separate from the self-control motive in the existing literature.

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Topics: Mental accounting, Economics, Liberian dollar, Incentive, Budget constraint, Microeconomics

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