In one study, psychologists at Hendrix College in Arkansas found that college freshmen who kept night-owl hours had lower GPAs than early birds.

• 在一项研究中，阿肯色州里克斯学院的心理学家发现，大学新生中那些“夜猫子”式的作息方式的学生们比早起的“云雀”平均学分积低。