Criminal behaviour is commonly reported among young adults with substance use (SU) problems (
Brunelle et al., 2014;
Smith & Saldana, 2013;
Weber & Lynch, 2021). This co-morbidity can have a significant effect on the SU recovery process, making it even more difficult and complex (
Brunelle et al., 2013,
2014). Some studies have examined to what extent criminal thinking (CT) can shed light on the SU-crime relationship (
Walters, 2014a,
2015a,
2015b). Research, however, has mostly been carried out among adult correctional populations. Although there is empirical evidence that CT is related to SU and criminality among non-correctional populations (
Carr et al., 2009;
McCoy et al., 2006;
Mitchell et al., 2017), few previous studies have applied CT concepts to young adult SU treatment settings.
Accumulation of adversity matters, implying that most risk domains play a more or less significant role in the development of maladaptive behaviour, such as SU and crime (
Assink et al., 2015;
Hecksher & Hesse, 2009;
Weber & Lynch, 2021). For instance, SU often involves joining in social networks with other people using substances (
Sieving et al., 2000), increasing the negative influence on SU behaviours, including criminal activity (
Hser et al., 2001;
Walters, 2016) and devoting less time to work and/or school-related activities (
Tucker et al., 2006). Residential SU treatment is seen as an appropriate intervention for individuals who have not responded to less restrictive treatments (
Winters et al., 2014). Thus, individuals in residential settings often present with greater clinical complexity and more severe SU problems compared with those in outpatient settings (
Braatveit et al., 2018;
Comandule et al., 2019;
Grella et al., 2001). Lifetime exposure to trauma (
Shin et al., 2018), emotional dysregulation, low self-knowledge, social knowledge, and interpersonal skills (
Parolin et al., 2017) are commonly presented among young adults entering residential SU treatment.
Current study
The psychosocial characteristics of the person are important factors in the process of recovery. This might include CT. Both CT and SU problems are central risk and/or need factors predictive of future criminal behaviour. Despite this, little attention has been paid to CT among young adults in SU treatment. Though sex differences in CT have been found, this evidence has been inconsistent. To an extent, the same can be said about research on the association between age and CT.
As well as investigating the frequency of CT, another aim of the present study was to investigate the psychosocial and SU characteristics of young adults in SU treatment and to what extent cognitive processes, such as CT, are associated with the SU characteristics sex and age. By identifying the characteristics and risk factors of this young cohort of people in residential SU treatment, the study aimed to contribute to a better understanding, and thus provide a basis for discussion, of the needs of young adults in SU treatment and how interventions can be tailored specifically to this population.
Research questions:
1.
What are the characteristics of young adults entering SU treatment regarding psychosocial problems, substance use, and criminal thinking?
2.
To what extent is criminal thinking associated with the substance use characteristics sex and age in bivariate and multivariate regression models?
Materials and methods
Design
This was a retrospective study using data collected from electronic health records (EHR). We used a cross-sectional design to investigate the frequency of CT and to assess the factors associated with CT in young adults entering residential SU treatment.
Setting and sample
Setting
The sample was patients admitted to a Norwegian residential SU treatment institution between 2011 and 2016. The institution offers interdisciplinary specialised treatment for young adults with SU problems. An extensive treatment programme is provided, inspired by 12-step programme techniques and therapeutic communities. The treatment programme integrates criminal risk factors in addition to MHP and SU problems. The institution is one of a few that offers long-term (3–12-month) residential SU treatment for young adults in Norway. It consists of 10 units, including two dual diagnosis (DD) units. The DD units offer treatment tailored to patients with concurrent SU problems and mental health disorders. The legal bases for treatment were Child Welfare Act, Specialist Health Service (SHS) Act, and the Execution of Sentences Act.
Sample and recruiting
The study was conducted on a non-probability sample. The sample included young adults who underwent an entry assessment during 2011–2016 at a residential SU treatment institution. Initially, 484 former residents were identified as potential study participants. A letter was distributed to former residents describing the nature of the study and asking them to contact the research team if they did not want to participate. Those who did not contact the research team to withdraw (via SMS, email, or mail) were deemed eligible to participate. The inclusion criteria included the following: aged 16–29 years; undergoing treatment during the study period; and having treatment last for at least 4 weeks. Among patients with more than one treatment episode during the study period, the first treatment episode lasting at least 4 weeks was included in the analyses. The exclusion criteria included declining participation. The analyses were based on a final sample of 407 patients. Among the others, 16 declined participation and the rest did not meet the other inclusion criteria.
Data collection and measures
The data collected were part of the routine assessment at admission for the residential SU treatment institution. At this assessment, patients are presumed to have completed detoxification and are clinically stable, without withdrawal symptoms that may occur immediately after treatment admission. EHR data used herein were from three instruments: the Client-Mapping Form (CMF); the Achenbach System of Empirically Based Assessment (ASEBA); and the Psychological Inventory of Criminal Thinking Styles (PICTS).
The Client-Mapping form
The CMF was developed by the former Norwegian Institute for Substance Abuse Research (SIRUS). Used since the late 1990s, in 2009 it was integrated into the Norwegian Patient Registry (NPR). The NPR covers all public specialist health-care services in Norway (
The Norwegian Directorate of Health, 2021). The CMF is a semi-structured interview that ensures comparable data across admissions for all treatment and care measures for SUD patients in Norway (
Iversen et al., 2009;
Skretting et al., 2011). The purpose of CMF is to elicit background information on patients as they enter SU treatment (e.g., SU characteristics, MHP, and socioeconomic status (SES)).
The Achenbach System of Empirically Based Assessment
The ASEBA was used to examine MHP and adaptive functioning (AF). AF refers to an individual's competence to cope with “
everyday environmental demands including daily living skills that people perform to care for themselves and to interact with others” (
Mitchell, 2018, pp. 33−34). Interests and activities in which the individual is involved are also part of the AF construct. The ASEBA includes standardised assessment instruments to assess AF and problems. It is well-validated and has been widely used to assess psychopathology (
Achenbach, 2019;
Rescorla & Achenbach, 2004;
Semel, 2017;
Strömbäck et al., 2015). Evidence points to a robustness of an underlying structure of MHP as measured by ASEBA, which is able to measure a person's proneness to MHP, persistence of MHP over time, and severity of symptoms (
Caspi & Moffitt, 2018;
Clark et al., 2021;
McElroy et al., 2018). Given that we were most interested in general patterns of psychosocial problems, we only used the broadband scale's total problems (TP; general psychopathology) and AF from the Youth Self Report (YSR; ages 11–18 years) and Adult Self Report (ASR; ages 18–59 years) forms. For the TP scale, cases were classified as normal (≤59), borderline (60–63), or clinical (≥64). For the AF scale, scoring 31–35 was classified as borderline and ≤30 as clinical range.
The Psychological Inventory of Criminal Thinking Styles
CT at treatment admission was measured using PICTS Version 4.0, an 80-item standardised self-report inventory designed to assess eight CT styles (
Walters, 2002). Each item is scored using a 4-point Likert-type scale (response options:
strongly agree,
agree,
uncertain,
disagree). The PICTS has acceptable internal and retest reliability (
Tonks & Stephenson, 2020). Support has been found for the validity of PICTS with adult prisoners and non-incarcerated young adults (
McCoy et al., 2006;
Tonks & Stephenson, 2020). The PICTS can be scored on three second-order scales; a total, General CT (GCT), Proactive CT, and Reactive CT scores. Herein, we only utilised the GCT score, given that we were most interested in general CT patterns. In addition, the GCT is considered the most reliable and stable among PICTS subscales (
Walters, 2002;
Walters & Mandell, 2007). The GCT can be divided into the following risk categories: low (T-score ≤40), low-moderate (T-score 41–49), high-moderate (T-score 50– 59), and high (T-score ≥60). The PICTS was normed on low- to high-security federal prisoners (
Walters, 2019). Thus, T-scores of 50 or higher indicate that GCT is significant, and the respondent is scoring higher than at least half the normative group.
Statistical analyses
Analyses were performed using SPSS Statistics version 27 (IBM Corp., Armonk, NY, USA) and STATA version 16 software (College Station, TX, USA). Partial respondents versus non-respondents and females versus males were compared by independent samples t-test or chi-square test, as appropriate. A linear regression model with inverse probability weighting (IPW) was estimated. The model assessed the association between the SU characteristics sex and age, and PICTS GCT. IPW was implemented to minimise bias from a large number of missing values on covariates considered for regression analysis. Multicollinearity was assessed by inspecting correlations among covariates. Standard residual diagnostics was performed. All tests were two-sided and results with p < .05 were considered statistically significant.
Missing data
Data were missing for all variables except voluntary admission, sex, and age. Missing data was in the range of 35%–69%. Few patients were categorised as fully responding on the PICTS GCT model. Approximately one-quarter (22%) of patients had complete data on all variables in the PICTS GCT model. After excluding cases with at least one missing value on these variables, we were left with a sample of 90 of 161 for the PICTS model. Excluded cases meant more bias in the dataset. A weighted regression was run (IPW).
Ethics
The study protocol was approved by the Regional Ethics Committee of Medical Research (REK) in Norway (#2018/2197). All procedures were performed in accordance with the 1964 Helsinki Declaration and its later amendments. The Health Research Act includes an exemption clause, according to which REK may waive the requirement for consent when researchers wish to use health information collected by health services. REK granted exemption for this project but made it subject to a disclosure requirement pursuant to the Personal Data Act, cf. Article 13 of the Personal Data Regulations.
Discussion
The aims of the present study were to assess the psychosocial characteristics, SU problems, and CT that young adults in residential SU treatment have, and whether SU characteristics, sex and age are associated with CT scores.
High rates of MHP, low SES, early ASO, and PSU were commonly reported among this sample of young adults. Thus, the characteristics of this clinical cohort represent typical clinical and psychosocial characteristics of young adults in residential SU treatment (
Comandule et al., 2019;
Winters et al., 2014). A high frequency of CT was found in this sample, indicating high levels of maladaptive cognitions that might interfere with the ability to engage in and follow treatment (
Bartholomew et al., 2018;
Yang et al., 2013) and an increased risk for criminality (
Walters, 2012). A potential explanation of this finding might be that SU places young adults at higher risk of deviant peer associations (
Boduszek et al., 2013;
Whited et al., 2017), problem behaviours including crime (
Brunelle et al., 2014), and that adverse experiences are commonly presented among this population (
Shin et al., 2018;
Weber & Lynch, 2021). These factors are expected to increase the risk of developing or maintaining CT.
The results herein demonstrate that males and individuals with harder SU have higher levels of CT than females and individuals with softer SU. This is in line with the research of
Brunelle et al. (2014), showing that the SU-crime association is stronger when using stimulants. Moreover, harder SU is often more expensive than softer SU, which can elevate the risk of offending in order to finance their SU (
Brunelle et al., 2014). Another explanation could be that the combination is caused by underlying factors such as family dysfunction, early adverse experiences, school difficulties, and MHP (
Assink et al., 2015). In addition, more severe SU places females at a higher risk of various adverse experiences, including the risk of victimisation in part as a result of living in a male-dominated environment. Despite females reported harder SU, they reported significantly lower levels of CT than males. Nevertheless, less severe CT can be problematic because they can still lead to maladaptive behaviour and impact on other determinants of health. When females develop SU problems, they deviate more from societal norms compared with males (
Hecksher & Hesse, 2009). CT may preserve and exacerbate difficulties in social functioning (
Mitchell et al., 2017), leading to an increased risk of social exclusion. Thus, females with severe SU problems, CT in addition to MHP, have a higher risk for comprehensive stigmatisation and social exclusion than males (
EMCDDA, 2003). For instance, it is more socially accepted for males to show aggressive, promiscuous, or risk-taking behaviour compared to females. These potential explanations of the relationship between CT, sex, and severity of SU are consistent with the notion posited by
Reinhard et al. (2020), that prolonged exposure to social exclusion leads to a cycle of exacerbated symptoms and further exclusion. The “gender paradox” hypothesis (
Eme, 1992) may be another explanation. Despite a lower proportion of females entering SU treatment compared to males, they tend to report more experiences that are adverse and show more psychosocial complexity (
Hecksher & Hesse, 2009;
Mitchell et al., 2016;
Weber & Lynch, 2021). This is supported by the present study, where it was more common for females to have received mental health service and to report more severe MHP. There was no sex difference in the former use of SU treatment, indicating a higher use of treatment among females compared to males.
Although the most consistent finding in this field of study is that young age is associated with higher levels of CT, no relationship was found in the present study between CT and age. This may have been due to a young mean age at treatment entry (20.5 years) or to admission criteria of the treatment institution. As with the sample in the study by
Walters and Schlauch (2008), the present study sample entered a setting where CT was routinely assessed. The treatment integrates criminal risk factors in addition to MHP and SU problems. The individuals in the present study have presumably many shared risk factors that heighten the risk of developing CT. For instance, most of the sample reported early ASO and PSU. Individuals with early ASO are more exposed to substance involvement and consequently are at higher risk of developing SU problems compared to those with later SU onset (
Mitchell et al., 2016;
Winters & Lee, 2008). High levels of MHP and low SES were other potentially shared risk factors that could explain, at least to some degree, the non-association between age and CT. The results herein indicate that these young individuals are a multi-problem high risk/high-need group aligned with the youths in the study by
Walters (2014a). Compared with youths who reported engaging in either behaviour alone, those with ongoing criminal and SU problems were significantly more likely to experience a range of adjustment difficulties including MHP and subsequent problems with crime and SU (
Walters, 2014a).
Clinical implications
Individuals entering SU treatment should be screened for criminogenic treatment needs such as CT, regardless of justice involvement. Ultimately, the identification of and improvement of maladaptive cognitions may help the cycle of risk behaviour within this population. Individuals who report concurrent MHP, SU problems, and criminogenic treatment needs would necessitate treatment that integrates criminal risk factors in addition to MHP and SU problems. Treatments targeting cognitive processes and maladaptive thinking patterns, in addition to regulating emotions, impulse control, and interpersonal skills, can prove to be particularly useful interventions. This group of young adults is presumed to be in need of treatment that focuses on outcomes related to social reintegration, such as promoting strong connection to and involvement in groups in the community and activities that promotes a sense of meaning and well-being. Measures that address the education, vocational, and everyday life needs are other crucial reintegration complements. However, it is unlikely that any single treatment intervention can affect so many different aspects of a person's life. Our findings underline the importance of integrated interventions that are need-adapted. As females tend to have a greater psychosocial burden when entering SU treatment compared to males, they may also need more extensive treatment interventions that run over a longer period of time (
Brunelle et al., 2014). When re-entering the community, continuity of care is seen as essential for these young adults (
McKay, 2021).
Strengths and limitations
The present study has some limitations, mainly involving missingness. Some of the missingness was due to the different legal basis for treatment entry. For instance, those with the Child Welfare Act as the legal basis for treatment entry were not obligated to fill out the CMF compared to those with SHS Act as the legal basis. High rates of missing data may lead to attrition bias. Although we found no differences in the demographic variables between participants and non-participants, there may be systematic differences between the groups. When most information is missing, the standard approach is to estimate each respondent's probability of participating and assign them a weight inversely proportionate to this probability (
Höfler et al., 2005). In this way, we can largely control bias. The crucial issue in the analyses of weighted data is that statistical weights do not represent true numbers of observations, only expected numbers.
The cross-sectional design and use of EHR allowed us to use data from a large sample and to compare between-group differences. Because the presence of explanatory factors and outcomes are measured simultaneously, the cross-sectional design is limited in its ability to make causal inferences. To achieve a better understanding of the temporal associations between variables of interest, future research should consider employing longitudinal designs. Future research is also warranted to examine whether interventions can affect SU directly and indirectly by affecting changes in CT. The typical procedure before entering residential SUD treatment in Norway is to be admitted to a detoxification unit. Since we have no information as to whether this was the case for this entire sample, we cannot rule out the possibility that results were linked to withdrawal symptoms.
Regarding the PICTS, it has been translated into Norwegian although there is no published research where normative data are available. Caution is needed to ensure that the levels of CT in young adults are compared to the appropriate standard in order to avoid inaccurate characterisation of CT. This, along with having two high-response options, can increase the likelihood for over-pathologisation. Normative data from a Norwegian sample incorporating sex and age as additional variables should be obtained. However, research has shown the potential use of the PICTS with non-incarcerated young adults (
McCoy et al., et al., 2006). Due to the PICTS in this cohort being administered on paper, the data collected needed to be entered manually. In addition to being time-consuming, data entry of a paper questionnaire can significantly increase the cost of the project. Due to this and our interest in general patterns of CT within this population, only the aggregated scores of GCT were obtained from the PICTS. The GCT score is considered the most reliable and stable among PICTS subscales (
Walters, 2002;
Walters & Mandell, 2007). Nevertheless, interpretation of aggregated scores may be less concise compared to using all the subscales in a measurement. Additional research is needed to establish which specific CT styles may or may not be associated with psychosocial problems and SU characteristics, and to get a better understanding of the sex differences found in this study.