Mental budgeting versus marginal decision making: training,experience and justification effects on decisions involving sunk costs

Many studies have shown that individuals make economically irrational decisions by using, rather than ignoring, sunk cost information. In this study, the effects of relevant academic training, financial experience and decision justification on investment decisions involving sunk costs were examined. Data on both the process (strategy) and outcome of the decisions were collected. The results indicate that practicing Certified Public Accountants (CPAs), Masters of Business Administration students (MBAs) and undergraduate accounting students perform better than undergraduate psychology students. The level of training, as measured by the number of college courses in managerial accounting, was found to be positively correlated with performance, while the level of experience, as measured by years of financially‐related work, was not. Justification was found to improve decisions only for those participants with significant work experience (MBAs and CPAs). Strategies used in this type of decision were examined with the surprising finding that economically rational decisions can be made even if sunk costs are not ignored. Copyright © 2007 John Wiley & Sons, Ltd.     

Mental accounting matters

Mental accounting is the set of cognitive operations used by individuals and households to organize, evaluate, and keep track of financial activities. Making use of research on this topic over the past decade, this paper summarizes the current state of our knowledge about how people engage in mental accounting activities. Three components of mental accounting receive the most attention. This first captures how outcomes are perceived and experienced, and how decisions are made and subsequently evaluated. The accounting system provides the inputs to be both ex ante and ex post cost–benefit analyses. A second component of mental accounting involves the assignment of activities to specific accounts. Both the sources and uses of funds are labeled in real as well as in mental accounting systems. Expenditures are grouped into categories (housing, food, etc.) and spending is sometimes constrained by implicit or explicit budgets. The third component of mental accounting concerns the frequency with which accounts are evaluated and ‘choice bracketing’. Accounts can be balanced daily, weekly, yearly, and so on, and can be defined narrowly or broadly. Each of the components of mental accounting violates the economic principle of fungibility. As a result, mental accounting influences choice, that is, it matters. Copyright © 1999 John Wiley & Sons, Ltd.     

心理账户基本特征的影响因素

心理账户是指个体对经济行为进行编辑、分类、预算以及评估的过程。心理账户中的基本特征主要包括享乐主义编辑、非替代性和局部账户。这些特征又受到一些因素的影响, 如享乐主义编辑受事件框架和个体差异的影响, 非替代性和预算控制受模糊性的影响, 局部账户受价值原始水平、语义联系程度和评价方法的影响。未来对心理账户的研究需要进一步探讨心理账户特征的普遍性、心理账户的机制及其文化差异。