正常人， 有老有小的，
孩子下午四五点放学，
有本事zf 把学校都延长到996，
学校855， 给家长安排996， 那些时间怎么办？ 自由活动？

Abstract
This study examined the association between long working hours and cognitive function in middle age. Data were collected in 1997–1999 (baseline) and 2002–2004 (follow-up) from a prospective study of 2,214 British civil servants who were in full-time employment at baseline and had data on cognitive tests and covariates. A battery of cognitive tests (short-term memory, Alice Heim 4-I, Mill Hill vocabulary, phonemic fluency, and semantic fluency) were measured at baseline and at follow-up. Compared with working 40 hours per week at most, working more than 55 hours per week was associated with lower scores in the vocabulary test at both baseline and follow-up. Long working hours also predicted decline in performance on the reasoning test (Alice Heim 4-I). Similar results were obtained by using working hours as a continuous variable; the associations between working hours and cognitive function were robust to adjustments for several potential confounding factors including age, sex, marital status, education, occupation, income, physical diseases, psychosocial factors, sleep disturbances, and health risk behaviors. This study shows that long working hours may have a negative effect on cognitive performance in middle age.

【 在 squirrelchen 的大作中提到: 】
: 当然会有个范围，但这个范围显然不是一个很狭窄的范围。而你认为偏离了这个就错，已经不是一个科学的问题了。
:
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修改:ibm221 FROM 119.109.70.*
FROM 119.109.70.*