Food crops produced by new technologies such as genetic engineering are widely opposed (Gaskell, Bauer, Durant, & Allum, 1999; Scott, Inbar, Wirz, Brossard, & Rozin, 2018). Here, we examine one reason for this opposition: recency. More recently-developed crops are evaluated less favorably, whether they are produced by artificial selection (i.e., conventional breeding), natural or man-made irradiation, or genetic engineering. Negative effects of recency persist in a within-subjects design where people are able to explicitly compare crops developed at different times, and an internal meta-analysis shows that the negative effect of recency is robust across measures and stimuli. These results have implications for the evaluation of crops produced using new modification techniques, including the widespread opposition to genetic engineering.

中文翻译：

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近期消极情绪：对较新的粮食作物的评价较差

通过基因工程等新技术生产的粮食作物遭到广泛反对（Gaskell、Bauer、Durant 和 Allum，1999 年；Scott、Inbar、Wirz、Brossard 和 Rozin，2018 年）。在这里，我们研究了这种反对的一个原因：新近度。最近开发的作物的评价较差，无论它们是通过人工选择（即常规育种）、自然或人造辐照还是基因工程生产的。新近度的负面影响持续存在于受试者内部设计中，人们能够明确地比较在不同时期开发的作物，并且内部荟萃分析表明，新近度的负面影响在测量和刺激方面是稳健的。这些结果对评估使用新改良技术生产的作物具有重要意义，包括对基因工程的广泛反对。