消费行为研究中的联合分析法

联合分析(Conjoint Analysis)是一种定量的研究消费者选择偏好的方法。虽然从它诞生到现在只有40年的历史,但它对消费者行为学的影响很大,它的发展更是日新月异。文章首先介绍了联合分析的基本概念,然后重点阐述了联合分析的原理、步骤和发展历程,最后对联合分析的发展方向作了一个简要概括。     

风险决策中动态框架效应研究

风险决策的框架效应一直是理论研究和实践应用的焦点。该研究利用计算机联网模拟团队分布式动态风险决策任务,从三个方面（过去绩效,启动资金和目标设置）研究决策者在动态条件下风险偏好的变化规律。研究发现“目标设置”因素框架效应具有抑制作用,“启动资金”因素对个体和团队有不同影响。研究结果表明,风险敏感性同样适用于解释动态情境下的风险偏好。     

心理不安全状态下决策者的风险偏好

心理不安全感是指人们对可能遭受的伤害与威胁的担忧与焦虑。当下, 许多个体都是在心理不安全的状态下进行决策。对于心理不安全状态下的风险偏好规律, 现有研究得到了矛盾的结果。此外, 心理安全感对风险偏好的作用机制尚不明确。本研究聚焦心理安全感对风险偏好的影响, 考察心理安全感的补偿机制在其中的中介作用, 并探讨选项分布情况在其中的调节作用, 以此揭示心理安全感为何及如何作用于风险偏好。研究结果将有助于明确决策者在心理不安全状态下的风险偏好规律, 从而完善现有的风险决策理论。同时, 为公共管理政策制定提供科学依据。     

Site preference and alloying effect of tungsten in the μ phase of Co7Mo6

The electronic structures of the μ phase of Co₇Mo₆ were investigated by means of first-principles calculation based on the density functional theory. The calculated equilibrium lattice parameters of Co₇Mo₆ are in good agreement with the experimental results. The results of calculation reveal that the addition of tungsten (W) promotes the stability of the μ phase of Co₇Mo₆ and W tends to participate in its formation. Through analysing the calculated electronic structure (partial density of states and charge density difference), it can be noted that a strong interaction exists due to d–d hybridization. Also, the majority of the atoms may contribute their valence electrons to the formation of metallic bonds in binary and ternary systems. Furthermore, the calculated results show that the doped W atom prefers to occupy the Co site in Co₇Mo₆ μ phase.     

Preference Structure Modelling for Multi-objective Decision Making: A Goal–Programming Approach

We propose a new approach for modelling preference structures in multi-objective decision-making (MODM) problems. The basic idea of the approach is to first develop PROMETHEE-influenced objective functions and then to use these to reformulate the problem as a distance-based goal–programming (GP) model. Three basic functional forms are proposed and explicit expressions are developed for them. Among other things, the expressions allow for the straightforward development of an interactive framework while keeping the information requirements from the decision maker (DM) at a minimum. An ‘automatic’ piecewise linear approximation scheme is proposed for solving the GP model. © 1997 by John Wiley & Sons, Ltd. J. Multi-Crit. Decis. Anal. 6 : 150–154 (1997) No. of Figures: 0. No. of Tables: 0. No. of References: 12.     

Shift of manual preference in right-handers following unimanual practice

The effect of unimanual practice of the non-preferred hand on manual asymmetry and manual preference for sequential finger movements was evaluated in right-handers before, immediately after, and 30 days following practice. The results demonstrate that unimanual practice induced a persistent shift of manual preference for the experimental task in most participants, but no significant correlation between manual asymmetry and manual preference was detected. These findings are explained by proposing that manual preference is influenced by a task-specific confidence developed from the recent history of differential use of the limbs, in interaction with a generalized confidence on a single hand for performance of motor skills.     

A reformulation of the general Euclidean model for the external analysis of preference data

This paper discusses least squares methods for fitting a reformulation of the general Euclidean model for the external analysis of preference data. The reformulated subject weights refer to a common set of reference vectors for all subjects and hence are comparable across subjects. If the rotation of the stimulus space is fixed, the subject weight estimates in the model are uniquely determined. Weight estimates can be guaranteed nonnegative. While the reformulation is a metric model for single stimulus data, the paper briefly discusses extensions to nonmetric, pairwise, and logistic models. The reformulated model is less general than Carroll's earlier formulation.The author is grateful to Christopher J. Nachtsheim for his helpful suggestions.     

Help-seeking: testing the effects of task interdependence and normativeness on employees’ propensity to seek help

This study explores the effects of task interdependence (high versus low) and helping norms (supportive versus non-supportive) on propensity to seek help. Participants were most likely to seek help when: (1) task interdependence was high, and (2) supportive help-seeking norms were operative. A 2-way interaction also emerged. Under the non-supportive norms condition, help-seeking was greatest for high versus low levels of task interdependence; when supportive norms were operative, relatively high levels of help-seeking arose across task interdependence conditions. No support for the hypotheses that high self-esteem, high task specific self-efficacy, and low achievement motivation would increase help-seeking was obtained.     

自我-他人决策差异：问题、研究与思考

目前关于自我-他人决策差异的研究在采用的任务、得到的发现及理论解释上均存在诸多矛盾或不一致的地方, 且缺乏对此种现象深层心理机制的探讨。虽然一些研究者试图用心理距离假设来解释相关结果, 但由于对心理距离的实验操纵过于简单, 难以形成解释力较强的理论模型。近年来我们的一系列研究发现：得失情境下自我-他人决策差异存在不对称性; 直接操纵心理距离比操纵决策者角色和社会距离对诱发自我-他人决策差异更有效; 决策者个体的自尊水平影响自我-他人决策差异。未来的研究需要进一步探讨自我-他人心理距离的本质、决策者角色转换引起的心理距离变化及自我-他人决策差异的脑机制等问题。     

大城市职场未婚女性的安全感对其择偶中物质倾向的影响

本研究以大城市职场未婚女性为例,探讨女性安全感对其择偶中物质倾向的影响。研究1采用问卷调查法(有效问卷357份),发现了女性安全感与其择偶中的物质倾向具有负相关的关系;研究2采用实验范式,通过死亡提醒操纵安全感,进一步验证女性安全感对其择偶中物质倾向的影响。研究结果表明,大城市职场未婚女性的安全感越低,其择偶中的物质倾向就越明显。本研究结果对部分女性择偶中表现的物质倾向提供了心理学解释。