她们需要参加数学考试，然后研究团队会评估她们在不同情况下的数学焦虑程度，例如看购物小票时或准备数学考试时。
Levine's group also evaluated the teachers' math anxiety by asking them to rate how anxious they would feel in various situations, such as reading a cash register receipt or studying for a math exam.
研究人员发现，购物者在之前作出的决定越多，他们在解决数学题上的表现越糟。
The researchers found that the more choices the shoppers had made earlier in the day, the worse they performed on the math problems.
有时候，我甚至运用数学方法和模型去购物。
Sometimes, I even use mathematical methods and models to go shopping.
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