Evaluation through follow-up

The first cohort comprises a nationally representative sample of pupils consisting of those born on the 5th, 15th or 25th of any month in 1948. The material covers some 12 000 pupils. The collection of the data was commenced when the majority of the pupils were in Grade VI (aged about 12), that is to say in 1960/61. The data kept in the register may be said to be of two types: I) Background data were collected in the spring of 1961. On this occasion the Department of Pedagogics at Göteborg University collected particulars of the results of certain intelligence tests and of national standardised school tests, as well as replies to questionnaires about the pupils' leisure-time interests, future plans, and about the attitude of the pupils and their families to school and school work. At the same time Statistics Sweden (SCB) collected particulars on the father's/mother's occupation/education, the number of their brothers and sisters and the distance travelled by them between home and school. 2) Annual data (首批队列纳入了具有全国代表性的学生样本，样本对象为1948年任意月份5日、15日或25日出生的学生。该数据集涵盖约12000名学生。数据采集工作始于1960/1961学年，彼时多数学生就读于六年级（年龄约12岁）。登记留存的数据可分为两类：1）背景数据采集于1961年春季。本次采集中，哥德堡大学（University of Gothenburg）教育学系收集了部分智力测验结果、全国统一标准化学校测验结果，以及关于学生课余兴趣、未来规划，以及学生及其家庭对学校与学业态度的问卷回复。与此同时，瑞典统计局（Statistics Sweden, SCB）收集了学生父母的职业/受教育程度、兄弟姐妹数量，以及学生上下学通勤距离的相关信息。2）年度数据（