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Is Variety the Spice of Life? An Experimental Investigation into the Effects of Species Richness on Self-Reported Mental Well-Being

机译：品种是生活的香料吗？物种丰富度对自我报告的心理健康影响的实验研究

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Losses in biodiversity and trends toward urbanisation have reduced people’s contact with biodiverse nature, yet the consequences for mental well-being are not well understood. Here, we demonstrate that greater plant and animal species richness in isolation causes an improvement in mental well-being. To do so, the present research experimentally manipulated species richness and assessed widely-used indicators of mental well-being. Participants viewed short videos of either high or low tree (Study 1) or bird (Study 2) species richness and reported on positive (i.e., vitality, positive affect) and negative (i.e., anxiety) indicators of mental well-being. Building on Study 1, Study 2 included an urban environment as a reference treatment and explored the role of giving participants information on the presented environment. We find that, in line with expectations, watching videos containing greater species richness consistently leads to higher mental well-being. We discuss findings in light of the importance of connecting people to biodiverse environments.
机译：生物多样性的丧失和城市化的趋势减少了人们与生物多样性自然的接触，但是人们对心理健康的后果却知之甚少。在这里，我们证明了孤立地增加动植物物种的丰富度可以改善心理健康。为此，本研究通过实验操作了物种丰富度并评估了心理健康的广泛指标。参与者观看了高树或低树（研究1）或鸟类（研究2）物种丰富度的简短视频，并报告了心理健康的积极指标（即活力，积极影响）和消极指标（即焦虑）。在研究1的基础上，研究2将城市环境作为参考处理，并探讨了向参与者提供所呈现的环境信息的作用。我们发现，符合期望的是，观看包含更多物种丰富度的视频会不断带来更高的心理健康。我们根据将人们连接到生物多样性环境的重要性来讨论发现。

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