In both the Nun Study and the Mills College research a measure of early positive expression, one through writing and one through smiling, determined the effect of this positivity over the lifespan.

在《修女研究》和米尔斯学院的研究中，有一项早期的积极表达方法，一个是通过写作另一个是通过微笑，被认为对寿命有正面影响。

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Sister Rogene Fox, an 81-year-old nun at Assisi Heights convent in Minnesota, was in the placebo group of the Mayo Clinic study after getting a painful vertebra fracture in 2007.

FORBES: Effectiveness