Constant exposure to bad outcomes causes optimism to dwindle, finds a study led by Johanna Habicht and Dr Tobias Hauser (Max Planck Â鶹´«Ã½ÊÓƵÍøÕ¾ Centre for Computational Psychiatry & Ageing Research and Wellcome Centre for Human Neuroimaging, Â鶹´«Ã½ÊÓƵÍøÕ¾ Queen Square Institute of Neurology).
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