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首页> 外文期刊>Ethology >The Importance of Validating Experimental Setups: Lessons from Studies of Food Choice Copying in Zebra Finches
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The Importance of Validating Experimental Setups: Lessons from Studies of Food Choice Copying in Zebra Finches

机译：验证实验装置的重要性：斑马雀科食物选择复制研究的经验教训

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The use of social information for foraging decisions has attracted much research attention. One line of research makes use of experimental assays of food choice copying to study whether specific traits of demonstrators influence whether or not an onlooking individual will copy their behavior. For instance, Benskin (Animal Behaviour, 64, 2002 and 823) reported that captive juvenile zebra finches always copied the foraging decision made by a male wearing red color rings as opposed to one wearing green rings. Here, we report an attempt to examine the generalizability of this finding using another zebra finch population. Our experiment did not show any effect of male ring color on onlooker's food choice and further revealed various population-specific differences in behavior, for instance, in aversion toward novel feeding sources. We therefore conducted two follow-up experiments to test the validity of the behavioral assay. These experiments revealed that zebra finches of our population often do not copy demonstrator food choice at all, and that copying, if it occurs, may be sensitive to very specific conditions of the experimental setup. Problematically, after testing a total of 124 onlookers (60 in the first experiment, 32 in the second, and 32 in the third), we still cannot confidently say whether or when our birds copy from demonstrators. Hence, we emphasize the risks of adopting experimental procedures that have proven successful in one study, without extensively validating them for the own study. The seemingly more rewarding follow-up experiments can bear high risks of yielding false-positive findings that can then be misinterpreted as justification for an actually uninformative experimental procedure
机译：利用社会信息进行觅食决策引起了很多研究关注。一项研究利用食物选择复制的实验方法来研究示威者的特定特征是否影响一个旁观者是否会复制其行为。例如，本斯金（动物行为，64，2002和823）报告说，圈养的幼年斑马雀总是复制由戴红色戒指的男性而不是戴绿色戒指的男性做出的觅食决定。在这里，我们报告了尝试使用另一匹斑马雀科种群检查这一发现的推广性的尝试。我们的实验并未显示男性环色对旁观者的食物选择有任何影响，并且进一步揭示了各种特定于人群的行为差异，例如，对新型饲料来源的厌恶。因此，我们进行了两个后续实验，以测试行为分析的有效性。这些实验表明，我们种群中的斑马雀通常根本不会复制示威者的食物选择，并且复制（如果发生的话）可能对实验装置的特定条件敏感。有问题的是，在测试了总共124个围观者（第一个实验中为60个，第二个实验中为32个，第三个实验中为32个）之后，我们仍然不能自信地说出我们的鸟是否从示威者那里复制。因此，我们强调了采用一项已在一项研究中证明成功的实验程序而未为自己的研究进行广泛验证的风险。看起来更有意义的后续实验可能会产生产生假阳性结果的高风险，然后将其误解为实际上无信息的实验程序的理由

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