Feeling more happy than usual this particular Friday? You should be, according to a scholar in seasonal disorders at a British university.
　　
　　Cliff Arnall of Cardiff University has analysed such factors as outdoor activities, nature, social interaction, childhood memories, temperature and holidays -- data gathered over a period of 15 years in interviews with 3,000 people around the world.
　　
　　His conclusion: June 23 is the happiest day of the year.
　　
　　People across borders experience happiness when they meet with friends and family and establish close social relationships, the University of Cardiff academic said. We need some close emotional ties.
　　
　　He used what he considers a simple equation to reach his conclusion -- O + (N x S) + Cpm/T + He.
　　
　　O stands for outdoor activities, N for nature, S for social interaction, Cpm for childhood summers and positive memories, T for temperature and He for holidays and looking forward to time off.
　　
　　Arnall has already figured out the saddest day of the year. It was January 23 -- a Monday. Surprise, surprise, he quipped.
　　
　　上周五这一天，你是否感到要比平常快乐呢？从英国一所大学的学者进行的季节性情绪失调研究来看，你的答案应该是肯定的。
　　
　　加的夫大学的克里夫·阿诺尔对户外活动、自然、社会交往、童年记忆、温度和假期等因素进行了研究分析。他在15年间访问了世界各地的3000个人收集了研究所需的数据。
　　
　　通过分析，他得出结论：6月23日是这一年中最快乐的一天。
　　
　　这位加的夫大学教授说：“世界各地的人们在和朋友、家人相见，以及与他人建立了密切的社会关系时，都会感到愉快。人们需要某些密切的情感联系。”
　　
　　他的结论来自一个他所谓的“简单公式”：O + (N x S) + Cpm/T + He。
　　
　　其中，O代表户外活动，N代表自然，S指社会交往，Cpm指童年时的夏日和美好回忆，T代表温度，He代表假期以及对假期的期待。
　　
　　阿诺尔还曾用公式计算出这一年中最郁闷的一天，结论是1月23日，一个星期一。他打趣地说：“奇事，实在是奇事。”

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