The link was established by a long-term study of the habits and behaviors of more than 1,000 children born in Dunedin, New Zealand, between April 1972 and March 1973.

• 研究人员对1972年4月至1973年3月在新西兰达尼丁出生的1000多个孩子的行为习惯进行了一项长期调查，得出了上述结论。