猕猴的多属性决策依赖于直接属性比较。

IF 3.1 3区 医学 Q2 NEUROSCIENCES
Aster Q. Perkins;Zachary S. Gillis;Erin L. Rich
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引用次数: 0

摘要

在以价值为基础的决策中,经常会有多种属性(如成本、质量或数量)对某一选择方案 的整体优劣产生影响。由于一种方案不可能同时在所有属性上都更优,因此决策过程应包括权衡相关属性的方法。大多数决策模型都是通过对各种属性进行加权组合,计算出每个选项的综合价值或效用,从而解决这个问题。然而,决策过程中的行为异常(如情境效应)表明,可能还存在其他特定属性的计算。在这里,我们测试了猕猴在基于价值的决策任务中是否表现出特定属性处理的证据。猴子做出了一系列涉及由甜度和概率属性组成的选择方案的决策。每个属性都由一个单独的条形图表示,条形图的大小与属性的大小之间有两种映射关系(即越大=越好或越大=越差)。我们发现,不同映射之间的转换会产生选择性决策障碍。当同类属性的映射不同时,选择的准确性较低,偏好的可变性较大,这表明猴子无法轻易地进行直接的属性比较,从而导致选择行为的准确性较低。而当同一选项中不相似属性的映射不同时,情况就不是这样了。同样,注视模式也更倾向于同类属性之间的转换,而不是同一选项中不同类属性之间的转换,因此同类属性被依次采样,以支持属性内比较。这些数据共同表明,基于价值的决策至少部分依赖于直接比较多属性选项的同类属性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multiattribute Decision-making in Macaques Relies on Direct Attribute Comparisons
In value-based decisions, there are frequently multiple attributes, such as cost, quality, or quantity, that contribute to the overall goodness of an option. Because one option may not be better in all attributes at once, the decision process should include a means of weighing relevant attributes. Most decision-making models solve this problem by computing an integrated value, or utility, for each option from a weighted combination of attributes. However, behavioral anomalies in decision-making, such as context effects, indicate that other attribute-specific computations might be taking place. Here, we tested whether rhesus macaques show evidence of attribute-specific processing in a value-based decision-making task. Monkeys made a series of decisions involving choice options comprising a sweetness and probability attribute. Each attribute was represented by a separate bar with one of two mappings between bar size and the magnitude of the attribute (i.e., bigger = better or bigger = worse). We found that translating across different mappings produced selective impairments in decision-making. Choices were less accurate and preferences were more variable when like attributes differed in mapping, suggesting that preventing monkeys from easily making direct attribute comparisons resulted in less accurate choice behavior. This was not the case when mappings of unalike attributes within the same option were different. Likewise, gaze patterns favored transitions between like attributes over transitions between unalike attributes of the same option, so that like attributes were sampled sequentially to support within-attribute comparisons. Together, these data demonstrate that value-based decisions rely, at least in part, on directly comparing like attributes of multiattribute options.
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来源期刊
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience 医学-神经科学
CiteScore
5.30
自引率
3.10%
发文量
151
审稿时长
3-8 weeks
期刊介绍: Journal of Cognitive Neuroscience investigates brain–behavior interaction and promotes lively interchange among the mind sciences.
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