Data represents peer support network from the famous Harry Potter book #6. For temporal structure and sample code, visit the source page.

Students in a Dutch secondary school were followed over a period of one year to study friendships and delinquency. This is data for the first wave

Students in a Dutch secondary school were followed over a period of one year to study friendships and delinquency. This is data for the second wave

Students in a Dutch secondary school were followed over a period of one year to study friendships and delinquency. This is data for the third wave

Students in a Dutch secondary school were followed over a period of one year to study friendships and delinquency. This is data for the fourth wave

Students in a Dutch secondary school were followed over a period of one year to study friendships and delinquency. This network denotes whether 2 students went to the same primary school. Delinquency and alcohol use data for all waves appended

Data collected from among the freshman cohort majoring in Sociology in the University of Groningen in 1996-1997. First of the five questionnaires regarding friendships, conducted at the start of the year

Data collected from among the freshman cohort majoring in Sociology in the University of Groningen in 1996-1997. Second of the five questionnaires regarding friendships, , conducted 3 weeks into the program

Data collected from among the freshman cohort majoring in Sociology in the University of Groningen in 1996-1997. Third of the five questionnaires regarding friendships, conducted 6 weeks into the program

Data collected from among the freshman cohort majoring in Sociology in the University of Groningen in 1996-1997. Fourth of the five questionnaires regarding friendships, conducted 13 weeks into the program

Data collected from among the freshman cohort majoring in Sociology in the University of Groningen in 1996-1997. Fifth of the five questionnaires regarding friendships, conducted 35 weeks into the program

Excerpt of 50 girls from the_Teenage Friends and Lifestyle Study_data set; studying friendships and substance use. This data is for first wave in 1995