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This article was downloaded by: [McMaster University]On: 19 December 2014, At: 19:32Publisher: RoutledgeInforma Ltd Registered in England and Wales Registered Number: 1072954Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK
Journal of Scandinavian Studies inCriminology and Crime PreventionPublication details, including instructions for authors andsubscription information:http://www.tandfonline.com/loi/scri20
The Challenge of Special NeedsEducation in School-BasedDelinquency ResearchJanne Kivivuori a & Venla Salmi aa National Research Institute of Legal Policy , Helsinki, FinlandPublished online: 15 May 2009.
To cite this article: Janne Kivivuori & Venla Salmi (2009) The Challenge of Special NeedsEducation in School-Based Delinquency Research, Journal of Scandinavian Studies in Criminologyand Crime Prevention, 10:1, 2-17, DOI: 10.1080/14043850902814530
To link to this article: http://dx.doi.org/10.1080/14043850902814530
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The Challenge of Special NeedsEducation in School-BasedDelinquency ResearchJANNE KIVIVUORI AND VENLA SALMI
National Research Institute of Legal Policy, Helsinki, Finland
Abstract
There are excellent reviews of methodo-
logical research in the self-report crime and
delinquency studies. Most notably the
reviews by Junger-Tas and Marshall
(1999), Tourangeau and McNeeley
(2003), and Thornberry and Krohn (2000,
2003) provide exhaustive treatment of
relevant issues and problems. Recently,
this body of methodological research has
been discussed in the Scandinavian social
and cultural context (Kivivuori 2007).
Taken together, the message is that self-
report delinquency research is a fairly
reliable and valid means of estimating
criminal behaviour especially in child and
adolescent populations.
Much of self-report delinquency re-
search is conducted in schools. The school
is not, however, a static institution which
remains the same forever. The school under-
goes change.One of the recent developments
is the increasing availability and provision of
special needs education (SNE). In this article,
we first briefly review the classical debate on
the limits of what has been called the ‘school
criminology’. We then describe the recent
rise in SNE provision with special emphasis
on Finland. Third, we use a large school-
based but SNE-inclusive data set to examine
how the exclusion of SNE students in the
sample would have influenced the preva-
lence and incidenceestimatesofdelinquency.
In recent years, there has been a
marked increase in the number
of students who are placed in
special needs education (SNE)
groups within the school system.
Consistent with this international
trend, the percentage of Finnish
students in SNE groups rose
from 2.9% to 7.7% from 1995
to 2006. The inclusion of
SNE groups in school-based
delinquency research has become
a salient issue for methodological
adequacy. In the Finnish Self-
Report Delinquency Study,
which is an indicator system
with repeated measurements,
SNE groups have been included.
In this methodological article, we
use the Finnish Self-Report
Delinquency Study (FSRD) 2001
sweep to analyse the relevance of
that inclusion. First, we analyse
the contribution of SNE students
to the prevalence and incidence
estimates of delinquency. Second,
we examine how the inclusion
or exclusion of SNE students
influences observations of
the correlates of delinquent
behaviour. The results indicate
that the population estimates
of the overall delinquency
prevalence are not seriously
compromised by SNE exclusion.
In contrast, incidence estimation
is highly susceptible to the
inclusion or exclusion of SNE
groups. Students placed in SNE
have higher prevalence of known
risk factors of delinquency, such
as disadvantaged social and
familial backgrounds. Their
inclusion in research appears
to have relevance for the
analysis of risk factors of
delinquency.
KEY WORDS: Correlates of delin-
quency, Prevalence and incidence
of delinquency, School-based
delinquency research, Self-report
delinquency survey, Special needs
education students
2 Journal of Scandinavian Studies in Criminology and Crime PreventionISSN 1404-3858 Vol. 10, pp 2–17, 2009
DOI: 10.1080/14043850902814530 qTaylor & Francis
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Fourth, we tentatively assess such effects as
SNE exclusion would have on substantive
research on the correlates of delinquency.
This is important, because SNE placement is
not random with respect to delinquent
behaviour. We conclude the article by
discussing the problems and challenges
involved when researchers have to
keep up with the changes in the institutional
infrastructure that they use for research.
Problems of ‘school criminology’
The invention of the self-report delinquency
survey by pioneers such as Austin Porterfield
(1946) was one of the most important
break-throughs in twentieth-century crimi-
nology. Systematic analysis of the dark
number of crime became possible, and
criminology was freed from the narrow
boundaries of official statistics and incar-
cerated or clinical samples. In a global and
historical perspective, the Scandinavian
countries were in the forefront of deploying
the self-report delinquency method in
ground-breaking field surveys (Kivivuori
2007). Today, the deployment of self-report
delinquency survey in educational and other
contexts is one of the corner-stones of
criminological research.
Since its inception, the self-report
method has been improved by being
subjected to methodological research and
critique. An important aspect of such
critique has been the study of the insti-
tutional context of research. Twenty years
ago, Cernkovich et al. (1985) argued that
serious chronic offenders are under-rep-
resented in, or totally absent from, many
self-report delinquency studies. They noted
that self-report studies are typically based
on community or school samples. Such
samples do not include serious offenders,
who are less likely to be found in schools.
Cernkovich et al. did not describe school-
based studies as somehow totally mis-
guided, because they were useful in
describing the delinquency of the average
youth and trends in such delinquency.
However, their seminal article highlighted
an important limitation of school-based
delinquency research.
More recently Hagan and McCarthy
criticized the kind of self-report research
which they labelled ‘school criminology’.
While acknowledging the merits of school
and community-based self-report studies,
they correctly pointed out that the self-
report method has been too often restricted
to junior and senior high-school students.
In their view, the appeal and ease of self-
report data collection in schools replaced
the streets as sites of data collection,
directed attention from class structure to
socio-economic stratification, and replaced
delinquency for crime as the main depen-
dent variable in criminology (Hagan and
McCarthy 1999:5).While Cernkovich et al.
underscored the importance of youths who
lived in institutions such as prisons, Hagan
and McCarthy noted that youths living in
the street were absent from the standard
school criminology. Both types of missing
students exemplify the problem of selective
non-response in self-report delinquency
research. The students for whom self-
reports are not obtained may be more
likely than average to engage in delin-
quency (Junger-Tas and Marshall
1999:309).
Recent European studies have indicated
that, in some respects at least, the school
may be a relatively good place to conduct
delinquency research. Naplava et al.
(2002) noted that ethnic minorities and
socially deprived groups could be better
reached by contacting them at school
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instead of at home. This finding was later
corroborated by Kollisch and Oberwittler
(2004). However, the external validity of
school-based research continues to face
criticism. A substantial body of evidence
suggests that being detached from main-
stream school is associated with increased
likelihood of delinquency (Stephenson
2007:91).
Judging from the above-cited research, it
seems clear that the adequacy of school as a
delinquency research site varies from one
country to another. The number of
incarcerated adolescents and street youths
varies. Some school systems are more
inclusive than others. The reasons why
some adolescents are outside the main
school system vary as well. The increasing
provision of special needs education is a
case in point. In a country like Finland,
placement in a special needs education
group is not seen as a very repressive
intervention. In most cases, the SNE
group is located in the same building
where regular classes go to school.
This suggests that the problem of overly
selective ‘school criminology’ should be
lesser in a country like Finland, if SNE
classes are included in self-report (SR)
surveys. Indeed, it would be possible to
compare critically what different societies
do with their unruly children: some may
incarcerate them, some may ignore them as
street youths, and some may take intensive
educational measures while keeping the
youths within the regular educational
framework. Fundamental institutional
arrangements such as these influence the
infrastructure and external validity con-
ditions of school-based delinquency
research.
Especially internationally comparative
self-report delinquency research is at risk
of ignoring important differences in the
institutional archipelago of each partici-
pating country. For example, the percen-
tage of SNE students differs from country
to country. Differences may reflect both
the factual differential incidence and
prevalence rates of disabilities, difficulties,
and disadvantages, or differential re-
sources allocated to special needs edu-
cation. Moreover, there is wide variation
between countries in the conceptual
frameworks to classify SNE students.
This makes it difficult to assess the
prevalence of pupils with different dis-
abilities, difficulties, and disadvantages.
Thirdly, countries vary greatly how inte-
grative their school system is for SNE
students. In some countries almost all SNE
students are educated in regular classes or
schools while in others virtually all of
them are educated in special schools
(Powell 2006; OECD 2007). These differ-
ences may occur also within any single
country when changes take place in
policies, conceptualisation, or available
resources. As will be elaborated below,
the provision of special needs education
has been increasing. We will describe this
trend more closely in the Finnish school
system and study its potential effects on
the external validity of school-based
delinquency research.
Learning difficulties, problem behaviour, andspecial needs education
According to the Organization for Econ-
omic Co-Operation and Development
(OECD), the need for SNE can arise from
three sources: disabilities, difficulties, and
disadvantages. ‘Disabilities’ refer to
impairments viewed in medical terms as
organic disorders attributable to organic
pathologies. ‘Difficulties’ refer mainly
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to behavioural or emotional disorders, or
specific difficulties in learning. ‘Disadvan-
tages’ are defined to arise primarily from
socio-economic, cultural, and/or linguistic
factors (OECD 2007).
All these causal pathways, especially the
second and the third, may be important
from the point of delinquent behaviour,
because they are known to be associated
with delinquency. According toMaguin and
Loeber, poor academic performance is
related to the prevalence and onset of
delinquency, and escalation in the frequency
or seriousness of offending. Their meta-
analysis shows that the poorer the academic
performance, the higher the delinquency
(Maguin and Loeber 1996:246). Levels of
academic achievement, school attendance,
and graduation rates are connected to youth
involvement in the criminal justice system
(Winters 1997).
While low attainment has been shown to
be a significant predictor of offending, the
link between these two is often indirect.
There are several possible transmission
mechanisms connecting poor school per-
formance and delinquency (Stephenson
2007:106–109). Many studies have
observed that cognitive problems are associ-
ated with above-average delinquent beha-
viour. There is a high prevalence of dyslexia
(reading and writing disabilities) among
prison populations (Jensen et al. 1999).
In theUnitedStates it hasbeenevaluated that
in the juvenile correction system the number
of youths identified as having disabilities is
almost four times higher than in public
school programmes (Quinn et al. 2005).
Some studies give even higher figures
comparing differences between special edu-
cational needs among young offenders and
the general school population (see Stephen-
son 2007:103–104).
Problems in cognitive skills and atten-
tion problems are believed to be common
causes of both poor academic performance
and delinquency. Learning difficulties and
low self-esteem as a learner may cause
frustration and may be expressed through
aggressive behaviour. These problems
lower the school motivation and may lead
to exclusion or even complete disengage-
ment. It is believed that interventions that
improve cognitive skills or decrease atten-
tion problems reduce delinquency (Maguin
and Loeber 1996:248; Winters 1997;
Stephenson 2007).
Reasons for placement in special needs
education
Students can be placed in special education
for a variety of reasons. Figure 1 shows the
main official causes of placement in special
needs education for grades 7–9. Pupils are
transferred to special needs education
mainly because of different types of
physical, mental, and cognitive disabilities
that cause learningdifficulties. The category
‘emotional or social problems’ is high-
lighted in the Figure because it is the
closest approximation of criminality-
related problems. It is very likely that
many students could have been placed in
SNE for many reasons. However, and what
is more important, all causes of SNE
placement are somehow related to cognitive
skills and/or attention problems.
Increase of special needs education
provision
Since 1999 the OECD has gathered a
longitudinal international database on the
trends in the number of students with
disabilities, difficulties, and disadvantages
(DDD students) receiving additional
resources. In the period of 1999–2003, the
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percentage of DDD students receiving
additional resources increased in several
countries. National data from the United
States indicate the number and percentage
of youths receiving special needs education
services have increased nearly every year
since 1976–77. By 2005–06, a total of 6.7
million youths received SNE services,
corresponding to 14%of total public school
enrolment (Institute of Education Sciences
2007). Germany also manifests similar
trends (Powell 2006). The increase probably
reflects both the rising incidence of certain
types of disabilities, difficulties, and dis-
advantages and new policies making greater
resources available to special needs edu-
cation (Powell 2006; OECD 2007).
In international comparison, Finland
figures as the leading nation in the overall
SNE provision, with Iceland, Denmark, and
Norway also among the top nations (Powell
2006:583). The Finnish trend is consistent
with international trends. The number of
students placed in special needs education
has been increasing substantially during the
recent decade (Figure 2). The percentage of
students in SNE has more that doubled
between 1995 and 2006. This is unlikely to
be a simple function of the increase in the
types of problems that warrant placement in
SNE. Additionally, the educational system
has changed to a direction which empha-
sizes individual and differential treatment of
students.
Regardless of the causes for the increase,
the critical point from the perspective of
school-based research is that these students
are potentially, and in many cases actually,
side-tracked from the regular education
systems. Hence, the problem of SNE
students is increasingly salient in the
methodological evaluation of school-
based research. The increasing placement
of students with disabilities, difficulties,
and disadvantages to SNE threatens to
magnify the problem of selective non-
response to surveys, if SNE students are
excluded from school-based research.
1 Subsequent sweeps of the FSRD do not contain thisquestion, or measure different aspects of specialeducational services.
Figure 1. Primary cause of placement in special needs education in 2006 (%), grades 7–9, Finland
(Source: Statistics Finland).
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Data
We use data from the Finnish Self-Report
Delinquency Study (FSRD 2001). The
FSRD survey is targeted at ninth-graders
(15–16-year-olds) in Finnish-speaking
schools. The schools are randomly selected
from a register of Finnish-language
schools. Each year, all ninth-grade stu-
dents of the selected schools comprise the
target population, including the students
who are placed in special needs education
classes because of disciplinary or learning
problems. The inclusion of the special
needs education groups and students is
a priority in data collection. In the
2001 sweep, the respondents (n ¼ 4347;
response rate: 89%) were asked: ‘Are you
at this moment placed in a special needs
education class?’1 Of all respondents,
6.2% reported that they were placed in
special needs education. The reason for
the placement was not specified.
However, there is a potentially import-
ant limitation in the FSRD data. The
information about the respondent’s status
as a regular class or SNE student was
based on the student self-report in the
2001 FSRD sweep. Hence it is possible
that the information about SNE place-
ment is not entirely accurate. Register
data from 2003 indicate that between
4% and 6% of the ninth-grade students
are registered as attending SNE classes
(Register of Educational Institutions,
2003)2. This figure is quite close to the
one based on student self-reports in
FSRD 2001.3
In what follows, our analytic strategy is
first to compare the delinquency levels of
regular and SNE students. We then
examine the contribution of SNE students
to prevalence and incidence of delinquency.
The overall procedure is rather similar to
that used by Fan et al. (2006) who
investigated the impact of so-called joke-
sters on delinquency prevalence in self-
report delinquency research. Third, we
tentatively explore whether observed
2The lower limit is based on assumption that schoolsfailing to report SNE students do not have them. Theupper limit is based on schools which have reported thenumber of SNE students.3 To assess the relevance of how SNE status is measured,we replicated the descriptive analyses of this article usinga small additional sample of known SNE students(n ¼ 32) in the Finnish International Self-Report Studyfrom 2006. In that sample, the student’s placement statuswas beyond doubt. The sample corroborated the resultsbased on the FSRD sample, in which the data on SNEparticipation are based on self-reports.
Figure 2. Percentage of students placed in special needs education (%), Finland 1995–2006 (Source:
Statistics Finland).
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associations between specific risk factors
and delinquency depend on the presence of
SNE in the sample.
Prevalence and incidence of delinquency inregular and SNE classes
Prevalence
Table 1 shows the prevalence of delinquent
behaviour by the type of class the
respondent attended at the time of the
survey. In most offence types, students
placed in special needs education had
higher prevalence rates than students
attending regular classes. The SNE stu-
dents were about 1.5–2.0 times more likely
than students in regular classes to have
committed most of the offences.
The difference is particularly substantial
in auto thefts, beating up someone, fighting
or running away from home. The overall
‘risk difference’ is quite similar to the one
that Maguin and Loeber found when
examining the delinquency risk of students
with low academic performance (Maguin
and Loeber 1996:147).
In stealing at school, stealing at home,
and misuse of legal medicine, there were no
significant differences in the prevalence rates
of the two groups. Misuse of legal medicine
typically refers to taking pain-killers with
alcohol in order to boost the intoxicating
effect. The lack of difference in stealing at
school and at home may reflect the general
life-styles and routine activity patterns of the
special needs education group. Their life-
styles are probably less school- or home-
Table 1. Participation in delinquent behaviour last year, by educational placement, Finland
2001 (FSRD 2001). Higher prevalence is boldfaced
Regular classes
Special education
placement P (chi-square)
Truancy 37.4 59.6 0.000
Running away from home 5.6 18.3 0.000
Driving without licence 20.8 36.1 0.000
Graffiti writing/drawing 12.9 16.5 0.039
Destruction of property at school 8.1 16.7 0.000
Destruction of property elsewhere 9.6 17.8 0.000
Shoplifting 11.7 17.1 0.004
Stealing at school 19.3 17.4 0.251
Stealing at home 16.5 18.8 0.228
Buying stolen goods 5.6 11.3 0.000
Auto theft 0.6 3.3 0.000
Bullying at school 14.2 20.3 0.006
Taking part in a fight 12.8 30.7 0.000
Beating up somebody 6.8 25.9 0.000
Use of marihuana or hashish 8.1 13.9 0.000
Misuse of legal medicine 7.7 8.9 0.053
Use of other drugs 1.5 2.3 0.031
Drunken driving 11.8 25.1 0.000
n 4064 268
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centred than the life-styles of the students
attending regular classes.
Table 1 compared the crime prevalence
of students in regular and SNE classes.
Another approach is to ask how much the
SNE students contribute to prevalence or
incidence estimates. How erroneous esti-
mates would have been produced if SNE
students had been excluded from the
sample? To begin with, it needs to be
noted that SNE students comprised only
6.2% of all students in the FSRD 2001
sample. No matter how criminal they are,
their impact on total prevalence is likely to
be limited.
In Figure 3, the contribution of SNE
students to prevalence is graphically high-
lighted. If SNE students had been exactly as
criminal as regular classes, there would
have been only a straight line in the figure.
Because the SNE students were actually
more criminal than the regular classes, they
‘push up’ the prevalence estimates. How-
ever, due to their relatively small number,
their inclusion does not result in dramatic
increase in the estimated prevalence of
offending. The largest impact is found in
violence: including the SNE students
results in an increase of one percentage
point in the prevalence estimate. Driving
without licence, truancy, drunken driving,
and running away from home also manifest
a one percentage point increase.
It can be concluded that the effect of
including SNE students in prevalence esti-
mates is relatively small. The exclusion of
Figure 3. Change of observed prevalence when special needs education students are included in the
sample (percentage points) (Source: FSRD 2001).
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SNE students from school samples does not
seem to compromise the ability of self-report
surveys to estimate prevalence levels, at least
in Finland.We next turn to the estimation of
incidence.
Incidence
Wecalculated the last-year incidence figures
to examine the respective contributions of
regular education and SNE students to
FSRD 2001 incidence estimates. These
kinds of incidence estimates tend to be
heavily influenced by students reporting
large numbers of incidents. We therefore
used a forced maximum of 25 annual
offences. All self-reports exceeding that
limit were recoded as 25.
The results are shown in Figure 4. For
example, SNE students, comprising 6% of
the respondents, committed about 20% of
last-year incidents of beating someone
up. The impact of SNE students on
incidence estimation is much bigger than
their impact on prevalence estimation.
SNE students tend to commit more
offences than students in normal edu-
cation. Therefore, they contribute more to
incidence of crime than they contribute to
prevalence of crime. From a methodologi-
cal point of view, this means that samples
excluding SNE students are likely to under-
estimate the incidence of crimes (while the
under-estimation of prevalence is small or
non-existent).
Correlates of delinquency
Above, we observed that exclusion of SNE
students from samples has a relatively
small impact on prevalence estimation but
seems to risk the external validity of
incidence estimates. Next we explore
whether the exclusion of SNE students
impacts substantive research on the corre-
lates and causes of juvenile delinquency.
Since ‘school criminology’ is sometimes
accused of focusing on trivial and occasional
delinquency, we decided to use frequent
delinquency as our dependent variable. This
was alsomotivated by the above finding that
incidence appears to be more sensitive to
SNE exclusion than prevalence. Based on a
sum variable of 14 offence types, the
respondents who had offended at least 25
times during the last year were defined as
frequent offenders. The repertory of inde-
pendent variables, described in the Appen-
dix, was restricted by the rather limited set
of correlates in the FSRD 2001.
The Appendix additionally shows vari-
ablemeans separately for regular classes and
SNE students. As can be seen, all risk factors
of delinquency were more prevalent among
students placed in special needs education (P
, 0.05). On average, the SNE students had
more economic problems and unemploy-
ment in the family, came from non-nuclear
families, and reported worse relationships
with parents. The SNE students were more
likely to have a girl-friend or boy-friend,
which may reflect early social and/or
biological maturation (Stattin and Magnus-
son 1989). They were also more likely to
come from large families. Two-thirds of
them were males. These descriptive facts
alone strongly suggest that the analysis of
risk factors of delinquent behaviour benefits
from their inclusion in research.
Since the SNE students are relatively few,
the relevance of their inclusion or exclusion
was additionally and tentatively examined
by specifying a multivariate regression
model with and without them (Table 2).
Irrespective of SNE inclusion, the following
variables emerged as significant correlates of
frequent offending: economic situation of
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the family, familystructure, relationshipwith
parents, having a girl-friend/boy-friend, and
sex. However, the point of the present
analysis was to examine whether the
inclusion of SNE students has any relevance
for which factors are pin-pointed as relevant
correlatesof repeatoffending. It appears that
the presence of SNE students has some
marginal relevance for the results. The
truncated sample excluding SNE students
erodes the association between (bad) econ-
omic conditions of the family and repeat
delinquency. Had we not included the SNE
students in FSRD 2001, we might have
concluded that serious economic difficulties
in the family are not significantly associated
with repeat offending. As a tentative and
preliminary conclusion, it might be argued
that SNE exclusion involves the risk of
undermining the ability of the study todetect
the economical and structural correlates of
frequent offending. This is consistent with
the finding that students from relatively
disadvantaged social and familial back-
grounds are over-represented in the SNE
population.
Figure 4. The percentage of offences committed by regular education and special needs education
students (nregular education ¼ 4064, nspecial needs education ¼ 268) (Source: FSRD 2001).
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Some additional findings warrant brief
comment as a stimulus for further inquiries.
First, when SNE students are excluded,
better-than-average economic conditions of
the family emerge as risk factor
Table 2. Correlates of frequent offending, with and without special needs education students.
Logistic regression equations, odds ratios
A. All students
B. Special needs
education students
excluded (truncated
sample)
Exp(B) 95% CI Exp(B) 95% CI
Economic situation of the family
Normal 1.00 1.00
Better than normal 1.32 0.93–1.88 1.46* 1.00–2.13
Difficulties 1.21 0.86–1.70 1.35 0.94–1.93
Serious difficulties 3.26** 1.76–6.00 2.08 0.95–4.55
Family structure
Both present 1.00 1.00
Single mother 0.91 0.66–1.26 0.86 0.60–1.23
Single father 0.62 0.32–1.18 0.67 0.34–1.32
Neither present 2.54** 1.43–4.50 2.08* 1.06–4.10
Relationship with parents a
Good/close 1.00 1.00
Average 1.71** 1.16–2.51 1.88** 1.24–2.85
Strained/distant 3.87** 2.68–5.60 4.20** 2.81–6.27
Dating behaviour currently
No 1.00 1.00
Yes 2.20** 1.68–2.88 2.36** 1.77–3.15
Parental employment
Both 1.00 1.00
One 0.91 0.67–1.24 0.83 0.59–1.16
Neither 1.08 0.63–1.86 1.06 0.58–1.96
Family size
0–3 siblings 1.00 1.00
4 or more siblings 1.20 0.70–2.08 1.15 0.62–2.15
Sex
Female 1.00 1.00
Male 2.46** 1.87–3.23 2.49** 1.86–3.34
n 4040 3796
a Based on sum variable with four items (alpha ¼ 0.67). Items measured relationships with parents and
parental knowledge of respondent’s leisure time friends. The sum variable was categorized into three equally
large categories. In both full and truncated data-based models, father’s socioeconomic status (SES) is included
(non-significant odds ratios in all models). Missing data not replaced. * ¼ p , .05; ** ¼ p , .01.
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of delinquency. This appears to be consistent
with the notion that the economic con-
ditions–delinquency link may be non-linear
so that exceptionally good economic situ-
ation of the family may be a risk factor of
delinquency (Wright et al. 1999). Second,
when we included father’s SES in the model,
it did not emerge as a significant correlate of
frequent offending. This probably reflects
the fact that the occupation-based SES
measure fails to capture real economic-
structural differentials in the research
population (Farnworth et al. 1994). The
same seems to apply to parental employ-
ment. In the presence of the economic
situation variable, the SES and parental
employment variables are uncorrelated with
delinquency risk. Parental unemployment
means that one or two parents have more
time to control their children’s behaviour,
which reduces delinquency risk when the
economic aspect of unemployment is separ-
ately tapped by another variable.
The findings are largely consistent with
the arguments advanced by the critics of
school criminology, such as Hagan and
McCarthy (1999). Students placed in
special education manifest multiple risk
factors, and their exclusion may influence
the observation of links between risk
factors and delinquency. Luckily, the SNE
students actually were available through
the (Finnish) school system where exclu-
sion from the comprehensive school system
is deployed only when all other means are
ineffective. As noted above, the inclusive-
ness of school systems is a variable, not a
constant in international and temporal
perspectives. In some other school systems,
problematic students might be side-tracked
to different special schools, ‘youth facili-
ties’, or even to repositories like the prison
or the street.
Summary and discussion
The main result of our analysis is that SNE
students differ from those who do not
receive special needs education. The SNE
students tend to have higher delinquency
levels. More precisely, we observed that the
exclusion of SNE students has a relatively
small impact on the estimation of overall
prevalence levels of delinquency. In con-
trast, such exclusion has a major impact on
incidence estimation. Samples excluding
SNE students are likely to under-estimate
the incidence of delinquency.
Additionally, the prevalence of major
social and economical risk factors of
delinquency is higher in the population of
students placed in special needs education.
This clearly indicates that their inclusion is
important for research focusing on the
causal sources of delinquency. The exclu-
sion of SNE students from the sample
appears to have a marginal influence on
which variables emerge as correlates of
serious offending and possibly on how
strong the correlation is. Our results
tentatively suggest that SNE exclusion
undermines the ability of the study to
detect the link between economical con-
ditions and frequent delinquency. Further
research is needed to explore whether SNE
exclusion artificially boosts the link
between ‘human relation’ types of variables
such as parental relationships. Further-
more, our data did not include measures of
cognitive skills or impairments, but logi-
cally one would assume that excluding
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SNE students jeopardizes the capacity of a
study to assess the role of cognitive factors
in delinquency causation. Taken together,
the exclusion of SNE students from the
research design affects the validity of
school-based self-report delinquency sur-
veys by influencing population estimates of
delinquency incidence, and by potentially
affecting the observed associations
between delinquency and its risk factors.
Needless to say, the findings are depen-
dent on the setting of our study, that is, the
institutional arrangements of Finnish com-
prehensive school in this decade. This,
however, is a lesson we wish to draw from
the findings. The critique directed against
‘school criminology’ has been warranted
and beneficial for school-based delin-
quency research, because more attention
is being given to the institutional ramifica-
tions of such research. Especially in
comparative research the institutional
archipelago of different areas and times
needs to be charted. Such analyses could
also highlight that the critique of school
criminology may be exaggerated. At least
in Sweden and Finland, involvement in
crime is only one of a number of reasons
why an adolescent can be placed in
institutions. This means that the insti-
tutional or custodial juvenile population
includes youths who are actually less
delinquent than the average school popu-
lation (Shannon, 2006). Consider, for
example, the youths who are placed in
special institutions because of physical
handicaps. The SNE students who are
placed in special classes within normal
schools may be more delinquent than
institutionalized youths in general.
Recently it has been argued that the
cultural context of a country, for example
the level of general social trust, may impact
the validity of comparisons based on self-
report delinquency research (Kivivuori
2007:27–31). This article adds to that
argument by stressing the role of the
institutional context for such comparisons.
Countries (and epochs) are likely to vary
according to how inclusive their ‘ordinary’
or ‘comprehensive’ school system is. In
some countries, students with different
types of disabilities, difficulties, and dis-
advantages are kept within the regular
schools and even within the regular classes,
while other countries side-track such
students to special needs education groups
or special education institutions. However,
there is a need to regard the institutional
framework in an even broader perspective.
It is important to describe how the school
system processes children and adolescents
with difficulties and disadvantages, but this
is not sufficient. The youths who are
entirely absent from or who manage to
circumvent the school system need to be
also considered. The complete institutional
location of adolescent populations needs
to be charted. This means that all
‘repositories’ of youths should be taken
into account, ranging from the regular
school to various kinds of youth facilities,
foster care arrangements, clinics, prisons,
and the street. This is needed if the purpose
of the study is to compare the delinquency
of the populations in a way that exceeds the
comparison of prevalence levels. Basic
prevalence levels seem to be rather immune
to the problems specified here, if suffi-
ciently large samples are used.
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JANNE KIVIVUORI
Research Director
National Research Institute of Legal Policy
POB 444
00531 Helsinki
FINLAND
Email: [email protected]
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Appendix
Descriptives of variables
Coding Mean SD
Mean,
regular
education
Mean,
special
needs
education
Economic
situation
of the family
1 ¼ average;
2 ¼ better than average;
3 ¼ difficulties;
4 ¼ serious difficulties
1.58 0.85 1.57 1.78
Family structure 1 ¼ both present;
2 ¼ single mother;
3 ¼ single father;
4 ¼ neither present
1.42 0.72 1.39 1.74
Relationship
with parents
1 ¼ good/close;
2 ¼ average;
3 ¼ strained/distant
0.99 0.79 0.97 1.16
Dating
behaviour
currently
0 ¼ no; 1 ¼ yes 0.24 0.43 0.24 0.36
Parental
employment
1 ¼ both employed;
2 ¼ one employed;
3 ¼ neither employed
1.39 0.60 1.37 1.60
Family size 0 ¼ 0–3 siblings;
1 ¼ 4 or more siblings
0.06 0.23 0.06 0.09
Sex 0 ¼ female; 1 ¼ male 0.50 0.50 0.49 0.67
Repeat
offending
0 ¼ others; 1 ¼ at least
25 annual offences
0.07 0.25 0.06 0.16
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