这次调查是赫特福德大学的心理学家怀斯曼在爱丁堡国际科学节上进行的。

Richard Wiseman, a psychologist at Hertfordshire University, conducted the survey at the Edinburgh International Science Festival.

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怀斯曼等人从赫特福德郡两所小学中选取60名学生，把他们分成两组。

Wiseman and others from two primary schools in Hertfordshire to select 60 students, they were divided into two groups.

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