Abstract
Introduction
Addiction and substance abuse are among the most severe psychosocial traumas posing environmental, psychological, behavioral, and emotional challenges to people. They can lead to problems for individuals, seriously undermine family and cultural foundations, and endanger countries’ dynamics (Lander, Howsare, & Byrne, 2013; Sword et al., 2013). Drug addiction is a type of brain disorder which can affect an individual’s behavior; be identified with mental, behavioral, and physiological symptoms; and be persisting for a long period of time despite its harmful and detrimental consequences. Substance abuse is also dangerous for individuals and can disturb their social and intellectual lives and affect their compatibility with others. It can cause major hazards to individuals’ health and lead to negative financial and social consequences which are beyond health care system. For instance, it can decrease economic efficiency, as a result of one’s exit from labor market; can increase crime rates; can cause malfunction and/or disability; and can, finally, lead to death (Volkow, 2014). Drug addiction is a serious problem that can be cured and overcome. Cognitive-behavioral therapy (CBT) is one of the non-medical therapies used to cure addiction. This form of therapy has been used to cure addicts in various clinical studies, and its clinical effectiveness has been proved (Marlatt & Range, 2008; McHugh, Hearon, & Otto, 2010).
Treatment of substance abuse disorders can be a complex and multi-dimensional process and often requires long-term efforts and specialized care because addiction has high comorbidity with other psychiatric disorders, such as anxiety and depression. Thus, these disorders should also be considered in treating addiction. For this reason, the therapeutic process meets three important targets, namely, stopping physical and psychological dependence on drugs, decreasing such non-physical consequences as anxiety and depression associated with drug abuse, and ultimately preventing relapse of disease (Momeni, Moshtagh, & Purshahbaz, 2010; Volkow, 2014). Based on the previous relevant literature, approximately 90% of drug addicts suffer from mood disorders, and especially depression, anxiety, and stress, which are among the most common psychiatric complications (Charney, Palacias-Boix, Negrete, Dobkin, & Gill, 2005; Hanter, Paddock, Zhou, Watkins, & Hepner, 2013; Hunter, Witkiewitz, Watkins, Paddock, & Hepner, 2012; Sareen, Chartier, Paulus, & Stein, 2006; Tatalovic Vorkapic, Dadic-Hero, & Ruzic, 2013). Stress refers to a real or imagined threat to human physical/mental homeostasis. Disturbed homeostasis causes stress and activation of the central and peripheral neuroendocrine mechanisms responsible for different adaptive behaviors and responses. Today, stress is considered as an inevitable and inseparable part of human life. It can steadily increase vulnerability to addiction (Andreou et al., 2011; Goeders, 2003; Schwabe, Dickinson, & Wolf, 2011; Sinha, 2001). The relationship between stress and addiction is highly complex. Indeed, evidence suggests that there is a bidirectional causal relationship between the two, that is, internal and external stress can result in addiction, as one tries to avoid an unpleasant state, and addiction, in turn, can cause an unpleasant state and lead to internal stress (Wand, 2008).
Depression is also another disorder which has high comorbidity with addiction and can be regarded as the principal cause of disability and social harm in the world. Based on Beck’s Cognitive Theory of Depression, depression is a pathological disorder that causes a change in the emotional, motivational, behavioral, cognitive, and physical aspects of one’s life. It is one of the most prevalent psychiatric disorders with a lifetime prevalence of 15.8% and is identified with low levels of positive emotions, such as happiness and confidence (Tran, Tran, & Fisher, 2013). Anxiety, with a lifetime prevalence of 28.8%, is yet another common psychiatric disorder. It is an unpleasant feeling of vague fear of an unknown origin experienced by the individual and encompasses uncertainty, helplessness, and physiological arousal. Worrisome and concern are common symptoms of anxiety, while depression is characterized by a deep decline in one’s willingness to be involved in daily activities, be socialized, recreate, play sports, eat, and have sexual desire (Hofmann, Wu, & Boettcher, 2014; Khaledian, Kamar Zarin, & Jalalian, 2014). Concerning the comorbidity of depression and anxiety with addiction, three factors can be simultaneously solved through CBT. Results of studies by Hamzeh Pour (2014); Hoffman and Smits (2008); Hollon, Stewart, and Strunk (2006); Jayasvasti et al. (2011); Momeni et al. (2010); Riper et al. (2014); Toneatto and Calderwood (2015); and Watkins et al. (2011) reveal that CBT can be effective in reducing depression and anxiety. Furthermore, researchers have also shown that CBT can reduce stress, anxiety, and depression in people with addiction (McHugh et al., 2010; Osilla, Hepner, Muñoz, Woo, & Watkins, 2009; Sugarman, Nich, & Carroll, 2010).
It is assumed in cognitive behavioral theory that depression can be caused by negative schemas about the self, the world, and the future created in the early stages of an individual’s life as a result of traumatic experiences. Accordingly, the therapy in the present study aimed at removing negative schemas and replacing them with positive ones. In this regard, cognitive restructuring, which implies replacing dysfunctional thoughts with efficient beliefs, can be effective in treating depression. In addition, learning new and appropriate behaviors can develop a sense of mastery and empowerment in people, which, in turn, can help people to adopt positive perspectives in dealing with problematic issues. From this point of view, familiarity of clients with problem-solving skills can help them to recognize that consideration of most of contextual factors and the major steps leading to the final solution are mostly based on their instincts, feelings, and emotions (Johnco, Wuthrich, & Rapee, 2014; Taylor & Marshall, 1997; Weersing & Brent, 2006).
One of the reasons for the effectiveness of CBT is that it emphasizes identification and correction of cognitive deviations, application of correct thinking, and development of necessary skills for carrying out assessment and making accurate judgment of negative thoughts which can help reduce levels of anxiety, depression, and other psychological disorders (Hamzeh Pour, 2014).
It is assumed in CBT that psychological problems are the result of negative schemas (Christner, Stewart, & Freeman, 2007; Moore & Garland, 2003) and persist by processing biased and negative information and dysfunctional beliefs. This therapy is designed to help patients to think more adaptively, and thus to improve their behaviors. Such patients are taught how to recognize their negative thoughts and how to explore the relationship between their thoughts and their behaviors. During the treatment schedule, patients gradually learn to identify and assess their dysfunctional assumptions and decide if they are valid or not. In addition, the therapist teaches them some adaptive skills, such as how to break major problems down into smaller and more manageable problems. Indeed, decision making based on loss–profit analysis, timing of activities, and step-by-step tasks can help patients overcome their problems and difficulties (Butler & Beck, 1995; Parker, Roy, & Eyers, 2003). Different techniques are used in CBT. For instance, behavioral techniques mainly entail avoidance of anxiety-provoking situations and/or effective changes in response to such stimuli. The use of muscle relaxation techniques and new and appropriate reinforcement methods at the time of severe anxiety, instead of taking drugs, are also recommended in this treatment. These techniques are taught to help clients look at these relationships and the situations from a new point of view (Momeni et al., 2010).
Based on the aforementioned materials, it can be claimed that CBT is effective in reducing depression and anxiety in individuals with drug abuse. In addition, treatment of depression is highly important in patients with addiction because depression may be one of the high-risk factors or even an obstacle to abstinence in addiction treatment and may lead to addiction relapse (Khaledian et al., 2014). Accordingly, this study is to answer the following research question:
Method
Population, Sample, and Sampling Procedure
The participants of this study were 24 males selected from all 20- to 40-year-old Iranian males with addiction (
Depression Anxiety and Stress Scale (DASS)
Lovibond and Lovibond (1995) developed a 21-item Depression Anxiety and Stress Scale (DASS-21). The DASS-21 is self-report questionnaire which is designed to measure severity of some symptoms common to both depression and anxiety. The participants were required to indicate severity of symptoms over the week before filling out the questionnaire. The items were designed on a 3-point Likert-type scale, from 0, indicating that the participant had not experienced the symptom over the last week at all, to 3, indicating that the participant had experienced the symptom commonly or most of the time over the past week (Gomez, 2014). Tran et al. (2013) reported Cronbach’s alpha coefficients of .72, .77, and .70 for the subscales of Depression, Anxiety, and Stress, respectively. Viqnola and Tucci (2014) also obtained the Cronbach’s alpha coefficients of .92, .90, and .86 for the subscales of Depression, Anxiety, and Stress, respectively. In addition, Asghari, Saed, and Dibajnia (2008) reported Cronbach’s alpha coefficients of .85, .85, and .87 for the subscales of Depression, Anxiety, and Stress, respectively. They also found the test–retest reliability of .77, .89, and .85 for the subscales of Depression, Anxiety, and Stress, respectively.
Procedure for CBT
CBT program consists of two components: anger management programs based on cognitive-behavioral theory (Reilly & Shopshire, 2014), and practical stress management program (McNamara, 2000, 2003). To implement the two aforementioned programs, the selected participants were randomly assigned to the experimental and control groups, first. The DASS (Lovibond & Lovibond, 1995) was administered to both groups as a pretest. Next, the experimental group was given CBT during eight 45-min sessions (two sessions per week, for a total duration of 4 weeks). The control group, however, received no intervention. After eight sessions, the DASS was administered to both groups, as a post-test this time. Furthermore, the two groups received third administration of the test, as a follow-up measurement to examine sustainability of changes in behaviors, 1 month later. The obtained data were then statistically analyzed. It should be noted here that, in an attempt to adhere to ethical principles, the control group also received the treatment after the completion of this study. It is also noteworthy that the intervention program was run by the present researchers. Table 1 presents summaries of the therapy sessions.
Summary of Therapy Sessions.
Results
Table 2 shows the mean values for severity of depression, anxiety, and stress for the experimental and control groups.
The Effect of Cognitive-Behavioral Therapy on the Level of Depression, Anxiety, and Stress in Iranian Males With Addiction.
To determine whether changes in the mean values were statistically significant or not, a MANCOVA was run. Accordingly, the pretest scores were considered as covariates. Prior to running MANCOVA, the Levene test was used to examine whether the assumptions of homogeneity of variance were proved or not. The result was not statistically significant for any of the variables (stress:
MANCOVA results (Table 3) showed a significant difference in the posttest mean scores of the variables of depression, anxiety, and stress between the two groups after removing the pretest effect (Wilks’s lambda = 0.467;
MANCOVA Results for Depression, Anxiety, and Stress in Experimental Group and Control Group in Post-test.
As one can see from Table 3, the groups were different in severity of depression, anxiety, and stress. Therefore, based on the descriptive and inferential statistical results, CBT was effective in reducing depression, anxiety, and stress.
In addition, follow-up measurement was performed and MANCOVA was run to investigate differences between the groups in severity of the relevant variables. To this end, prior to running MANCOVA, the Levene test was used to examine if the assumptions of homogeneity of variance were proved. The results were not statistically significant for any of the variables (stress:
MANCOVA results (Table 4) showed a significant difference in severity of depression, anxiety, and stress between the two groups after removing the pretest effect (Wilks’s lambda = 0.489;
MANCOVA Results for Depression, Anxiety, and Stress in Experimental Group and Control Group in Follow-up.
Table 4, on the results of follow-up measurement, shows that there have been significant differences between the groups in severity of depression, anxiety, and stress after controlling for the effect of the pretest.
Discussion
The main objective of this study was to investigate the effect of CBT on depression, anxiety, and stress levels in Iranian males with addiction. The result revealed that the use of CBT led to a reduction in the levels of depression, anxiety, and stress of the participants. This was in line with the findings of Hamzeh Pour (2014); Hoffman and Smits (2008); Hollon et al. (2006); Jayasvasti et al. (2011); Momeni et al. (2010); Riper et al. (2014); and Watkins et al. (2011). The researchers reported that CBT, whether of individuals or groups, was effective in reducing depression.
In fact, research results has indicated that CBT is highly effective in reducing depression in the experimental group, as compared to the control group (Beltman, Oude Voshaar, & Speckens, 2010; van Straten, Geraedts, Verdonck-de Leeuw, Andersson, & Cuijpers, 2010). The reason might be that CBT can be effective in Iranian males with addiction who are changing attitudes and beliefs of people with addiction, in increasing their self-esteem, and in developing their logical thinking (Khodai, Khazai, Kazemi, & Aliabadi, 2012; McGinn, 2000; Momeni et al., 2010; Okunna, Rodriguez-Monguio, Smelson, & Volberg, 2015; Schwartz & Petersen, 2009). Iranian males with addiction can learn to modify their negative thoughts and internalize behavioral planning skills, social skills, and self-assertiveness through the use of CBT techniques. These can help them to overcome their depression (Hunter et al., 2012; Khaledian et al., 2014; McGinn, 2000).
Concerning the effectiveness of CBT on reducing anxiety levels in Iranian males with addiction, it should be stated that CBT is the first treatment option for treating anxiety disorders and has been considered very effective in this regard (Ghahramanlou, 2003; Hofmann & Smits, 2008). Indeed, CBT can help Iranian males with addiction to create new thinking networks and adapt behaviors which can challenge maladaptive networks and memories. CBT benefits from such techniques as relaxation and cognitive restructuring. By cognitive restructuring, Iranian males with addiction can learn how to challenge the truth of anxiety-producing thoughts through considering some pieces of evidence against those thoughts (Arch & Craske, 2008). Moreover, relaxation exercises decrease muscle tension, heart rate, and breathing rate of Iranian males with addiction. Iranian males with addiction who produce these bodily responses report a decrease in their anxiety level (Miltenberger, 2011). In addition, promoting relaxation can improve blood circulation and brain function, and thus reduce anxiety (Shaw et al., 2013).
The results of this study also showed that CBT was effective in reducing stress levels in Iranian males with addiction. In general, many previous studies have confirmed that CBT can be extremely effective in reducing stress (Kim, 2007; Richardson & Rothstein, 2008; van der Klink, Blonk, Schene, & van Dijk, 2001). Regarding this, CBT can help Iranian males with addiction learn coping strategies. Developing coping styles can develop individuals’ ability to adapt to stressful situations and to reduce their stress. Besides, CBT can reduce levels of stress in Iranian males with addiction through supporting them and helping them to understand that they are not left alone with their problems. Moreover, CBT includes stress management training because stress managing can reduce anxiety and stress (Shaw et al., 2013).
The overall results of this study showed that CBT can be effective in reducing depression, anxiety, and stress. However, to conclude that CBT was definitely effective in reducing depression, anxiety, and stress, more studies are needed. With regard to the high comorbidity of these disorders with substance abuse and considering the fact that these factors can be posed as obstacles to drug abuse treatment, it is necessary for professionals to consider them in the healing process.
The present study was conducted on Iranian males with addiction; it is suggested that future studies be done to examine the effect of CBT on depression, anxiety, and stress levels in Iranian females with addiction. The sample size of this study was small. This can threaten generalizability of the study’s findings. It is recommended, therefore, that future studies benefit from more participants.
Convenience sampling was used for the selection of participants of this study. Therefore, generalizability of the results to the statistical population should be made with caution.
