真实变量：按实物单位衡量的变量。

Real variables are variables measured in physical units.

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货币中性：认为货币供给变动并不影响真实变量的观点。

Monetary neutrality is the proposition that changes in the money supply do not affect real variables.

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没有参与这项研究的宾夕法尼亚大学心理学家尼娜·施特罗明格指出，她希望这种影响是真实的，但不能排除一些未知的混杂变量。

Psychologist Nina Strohminger at the University of Pennsylvania, who was not involved in the study, says she wants the effect to be real but cannot rule out some unknown confounding variable.

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