Robert Cummins at Deakin University in Burwood, Australia, notes that changes in happiness reported by Headey's team could be influenced by individuals falling into or recovering from depression.

澳大利亚迪肯大学(Deakin University)罗伯特•卡敏斯(Robert Cummins)注意到，海迪团队报告的幸福之变化可能受个人消极情绪影响。

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