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Honest signaling and the double counting of inclusive fitness

机译:诚实的信号和包容性健身的重复计算

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Inclusive fitness requires a careful accounting of all the fitness effects of a particular behavior. Verbal arguments can potentially exaggerate the inclusive fitness consequences of a behavior by including the fitness of relatives that was not caused by that behavior, leading to error. We show how this “double‐counting” error can arise, with a recent example from the signaling literature. In particular, we examine the recent debate over whether parental divorce increases parent–offspring conflict, selecting for less honest signaling. We found that, when all the inclusive fitness consequences are accounted for, parental divorce increases conflict between siblings, in a way that they can select for less honest signaling. This prediction is consistent with the empirical data. More generally, our results illustrate how verbal arguments can be misleading, emphasizing the advantage of formal mathematical models.
机译:包容性适应性要求仔细考虑特定行为的所有适应性影响。口头辩论可能通过包括并非由行为引起的亲戚适应性而夸大某种行为的包容性适应性后果,从而导致错误。我们用信号文献中的一个最新例子来说明这种“重复计数”错误是如何产生的。特别是,我们考察了有关父母离婚是否会增加父母与子女之间冲突的争论,选择了较不诚实的信号。我们发现,在考虑了所有包容性适应性后果后,父母离异会增加兄弟姐妹之间的冲突,从而他们可以选择较不诚实的信号。该预测与经验数据一致。更广泛地讲,我们的结果说明了口头辩论可能具有误导性,强调了形式数学模型的优势。

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