This data set is about the evolution of a friendship network and delinquent behavior of pupils in school classes, collected in the Dutch Social Behavior study, a two-wave survey in classrooms (Houtzager and Baerveldt, 1999).

These data are from classrooms of the *MAVO * track,
the lower middle level of the Dutch secondary school system,
in which the pupils filled in a
questionnaire in the 3^{d} and 4^{th} years,
with about one year in between.

A further description of the data can be found here.

** Data files**:

The data files are for 19 schools, numbered
**h** = 1, 3, 4, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23.
For each of these values of **h**, the following files are available.
Thus for the first school the files are
N34_1.DAT, HN34_1.DAT, CBE1.DAT, cbc1.dat, and cbe1.sim;
and similarly for the other school numbers.

- Network data files (adjacency matrices):

wave 1:`N34_`

(grade 3)**h**.DAT

wave 2:`HN34_`

(grade 4)**h**.DAT

The relation is defined as giving and receiving emotional support: there is a tie from pupil*i*to pupil*j*if*i*says that he/she receives and/or gives emotional support from/to pupil*j*. - Actor attributes

`CBE`

**h**.DAT

with the variables, respectively:- gender (1 = boy, 2 = girl);
- a measure of delinquent behavior, measured at the first wave;
number of minor offences which the respondent states to have committed,
transformed by the formula ln(1+
*x*) to correct the skewness of the distribution; - importance of school friends (varying from 1 = very important to 4 = unimportant).

- Changing actor behavior

`cbc`

**h**.dat

the same measure of delinquent behavior, measured at waves 1 and 2, transformed by ln(1+*x*), but now also rounded to integer values. - Dyadic covariate

`cbe`

**h**.sim

defined as 1 if the pupils have the same ethnic background, and 0 otherwise.

*Example setup files for RSiena:*

- A specification file for school 3, for studying dynamics of networks
(without behavior):

`baerveldt3.csv`

- A specification file for a multigroup study of schools 1, 3, 4, 6,
for studying dynamics of networks (without behavior):

`baerveldt1346.csv`

*Example setup files for Siena 3:*

- Basic information files:

`CB`

**h**.IN

for use in studies of dynamics of networks and behavior.

For using these in studies of dynamics of networks only, delete the dependent behavior variables. - Specification file for multi-group analysis :

`S07_CB1346.bat`

`cb1346.min`

These files allow to use the multi-group option of*Siena 3*combining projects CB1, CB3, CB4, and CB6. - Specification file for meta analysis using
*Siena08*:

`Siena08.bat`

`combi_cb.mli`

These files presuppose that there are 19 output files to be combined, as mentioned in the .mli file!

Chris Baerveldt, Beate Völker, and Ronan Van Rossem (2008).
Revisiting selection and influence: an inquiry into the friendship networks of high school students
and their association with delinquency.
*Canadian Journal of Criminology and Criminal Justice*, 50, 559-587.

http://dx.doi.org/10.3138/cjccj.50.5.559.

(Note: the quadratic shape function has been mistakenly omitted from the specification of the behavior objective function in the analyses reported here.)

Houtzager, B. & Baerveldt, C. (1999). Just like Normal. A Social Network
Study of the Relation between Petty Crime and the Intimacy of Adolescent
Friendships. *Social Behavior and Personality 27(2)*, 177-192.

Snijders, Tom A.B, and Baerveldt, Chris (2003).
A Multilevel Network Study of the Effects
of Delinquent Behavior on Friendship Evolution.
*Journal of Mathematical Sociology* 27, 123-151.

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