挑战情绪研究中固有假设，发现大脑反应在同类别情绪间差异显著。
Exploring Theory-Laden Observations in the Brain Basis of Emotional Experience
- 以情绪为可变实例而非固定类别重新分析脑数据
- 未复现原有情绪-脑区对应关系，发现同类情绪间个体差异大
- 提醒研究者需多方法验证假设，避免理论预设误导结论
在情绪科学中，普遍认为民间情绪类别构成生物与心理上的分类体系，研究常据此设计并分析以识别特定情绪模式。这一方法本身影响观测结果，最终强化了原有假设。我们重新分析了一项基于此分类假设的研究数据，该研究曾报告个体脑活动模式与34种情绪类别的平均评分之间的映射关系。我们的再分析采用情绪作为可变、情境化实例的替代视角，事先预测同一情绪类别内存在显著脑模式变异。因此，分析中对数据方差结构的假设极少。如预期，我们未观察到原研究的映射关系，反而发现了个体间显著差异。这些发现表明，初始假设会深刻影响科学结论，提示任何假说必须经多重分析方法验证后方可被重视。
原文摘要 · Abstract (English)
In the science of emotion, it is widely assumed that folk emotion categories form a biological and psychological typology, and studies are routinely designed and analyzed to identify emotion-specific patterns. This approach shapes the observations that studies report, ultimately reinforcing the assumption that guided the investigation. Here, we reanalyzed data from one such typologically-guided study that reported mappings between individual brain patterns and group-averaged ratings of 34 emotion categories. Our reanalysis was guided by an alternative view of emotion categories as populations of variable, situated instances, and which predicts a priori that there will be significant variation in brain patterns within a category across instances. Correspondingly, our analysis made minimal assumptions about the structure of the variance present in the data. As predicted, we did not observe the original mappings and instead observed significant variation across individuals. These findings demonstrate how starting assumptions can ultimately impact scientific conclusions and suggest that a hypothesis must be supported using multiple analytic methods before it is taken seriously.
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