But Mr Ariely and his colleagues demonstrate a mechanism through which such confounding effects could operate.

但是Ariely先生和他的同事们论证了这类干扰效果得以运行的一套原理。

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This was designed to eliminate confounding factors such as the 'comforting' effect of drinking a cup of tea.

BBC: NEWS | Health | Black tea 'soothes away stress'

This was despite nearly identical power outputs in all four tests and efforts to control for possible confounding variables, such as the time of day.

ECONOMIST: Exercise and company

The parties currently concur on the fundamentals (an increase in state funding for parties in return for tighter limits on donations and spending) but the details, such as whether the limit on contributions should apply to trade unions, have proved confounding.

ECONOMIST: How corrupt are Britain's politicians?