Zofia Lebiecka1*
Tomasz Skoneczny1
Ernest Tyburski2
Jerzy Samochowiec1Adam Jędrzejewski2Janina Wirtz3
Simone Kühn3
Anette Søgard Nielsen4
Angelina Isabella Mellentin4Leonie Ascone Michelis3
Jolanta Kucharska-Mazur1- 1Department of Psychiatry, Pomeranian Medical University in Szczecin, Szczecin, Poland
- 2Department of Health Psychology, Pomeranian Medical University in Szczecin, Szczecin, Poland
- 3Neuroplasticity Research Group, Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- 4Unit for Clinical Alcohol Research, Unit for Psychiatric Research, Department of Clinical Research, Odense Center, University of Southern Denmark, Odense, Denmark
In the face of increasing social, economic, and health consequences of alcohol use disorders (AUDs) and limited effects of available treatment options, the search for novel prevention and management methods continues to remain a timely and valid endeavor. This, however, requires a better grasp of the theoretical framework underlying addiction mechanisms. With the goal to extend the existing body of evidence on AUDs, we set out to investigate the effect of personality-related factors and depressive symptomatology on (i) impulsivity, (ii) cognitive response inhibition, and (iii) the links between the two measures of behavioral control (different facets of impulsivity and response inhibition) in a treatment-seeking AUD sample. To this end, 53 male (n = 45) and female (n = 8) inpatients at an alcohol rehabilitation center completed three self-report questionnaires: the International Personality Item Pool (IPIP-50), the Beck Depression Inventory Second Edition (BDI-II) and the Barratt Impulsiveness Scale (BIS-11) and performed one behavioral task—an alcohol go/no go task. Regression analyses revealed conscientiousness, intellect, and depression level to be important potential predictors of self-report impulsivity and processing speed in recovering drinkers. No significant links were observed between the two measures of behavioral control, thus complementing evidence that while they both encompass behavioral under-regulation, they may indeed represent distinct psychological constructs.
Introduction
As the addiction-related adverse public health consequences, and respective social and economic burden to both individuals and societies worldwide are growing, so is the importance of more efficaciously addressing the issue of substance use disorders (SUDs). Despite all the existing treatment options, SUDs remain difficult to manage, with relapse rates reaching approximately 50% across different populations (1). Among all addictions, an especially harmful one, and thus a major health concern is that to alcohol, contributing to over 200 disease and injury conditions. Furthermore, alcohol use disorder (AUD) is responsible for about 3 million deaths annually, while taking a particular toll on young individuals between 20 and 39 years of age (2).
Even though the theoretical underpinnings of alcohol use disorders (AUDs) seem to be quite well-established, available relapse prevention and treatment methods remain insufficient. This is to say that while there exist a number of efficacious evidence-based treatments for AUD, they do not seem to be successful for all patients (3). This tentatively implies that theoretical frameworks concerning underlying addiction mechanisms may still need to be further refined and expanded—with a hope to improve the contemporary clinical paradigms. Albeit these already combine the use of medication and cognitive–behavioral interventions, further amplification of the effects by broadening the existing assessment of related mechanisms and thus treatment options, is warranted c.f. (4, 5).
AUD has been conceptualized in terms of a certain imbalance between impulsive and reflective systems (6), whose ICD-10 criteria include an irresistible desire or compulsion to use alcohol (i.e., craving/limbic adaptation), difficulties to control its intake (i.e., compulsion/lack of impulse control), evidence of physiological withdrawal and tolerance (i.e., physiological adaptation), gradual neglect of alternative pleasures/interests (i.e., narrowed attention/attentional bias), and persistent use despite harmful consequences (i.e., lack of conscious control despite insight) (7). Of note, craving constitutes not only a fundamental diagnostic criterion, but also a significant relapse predictor (8, 9), and therefore is worthy of further study with regard to assessment and treatment models.
Like its predecessor, also the eleventh revision of the International Classification of Diseases and Related Health Problems (ICD-11) considers alcohol use disorder to be the central diagnostic entity concerning its pathological use, whose key feature is deemed a strong internal drive to drink linked to impaired control, typically (but not necessarily) accompanied by a feeling of craving (10). Though seemingly only minor, there are, indeed, changes in the approach toward AUDs in ICD-11 relative to ICD-10, which may not only dictate the use of different and hopefully more efficacious management paradigms in the future, but which, more importantly, suggest that despite numerous studies to date, there is still more to discover as far as the fundamentals of AUDs are concerned.
It is quite commonplace to couple addictive disorders with an entire array of psychological and social factors considered likely contributors to their development and maintenance, with personality characteristics as most promising candidates underlying alcohol misuse (11, 12). Most empirical focus seems to have been centered around the Big Five personality traits, with research demonstrating how each of its domains (neuroticism, extraversion, openness to experience, agreeableness, and conscientiousness) is associated with alcohol use (13). Nevertheless, continuous endeavors to establish the addictive personality profile have been yielding diverse results, suggesting that each addiction, though sharing certain common key features (cf. addiction diagnostic guidelines), may, in fact, be linked with and reflect a distinctive underlying personality and its development. Personality traits have been conceptualized not only to constitute genetic phenotypes disposing for alcohol use (14), but also driving forces behind the motivations to engage in drinking behaviors as well as behind the very drinking paradigms (15). Hence, individually targeted interventions have proven useful in prevention of AUDs and other addictions (16, 17).
Even though links between personality and alcohol use have been investigated across diverse populations (18–22) research has yielded mixed results, suggesting their varied etiology. The factors considered central to the Big Five model are postulated to include such descriptive characteristics as: excitable and easily upset for neuroticism; talkative, assertive, energetic for extraversion; intellectual, imaginative, independent-minded for openness; good-natured, cooperative, trustful for agreeableness; and orderly, responsible, dependable for conscientiousness (13). And so, the most widely studied: neuroticism and related constructs have been associated with coping-motivated alcohol use, while those linked to extraversion have been reported as accountable for social drinking (23, 24). Though there are findings attributing alcohol misuse to neuroticism, triggering pathological coping mechanisms in response to the underlying negative emotionality [e.g., (25)], further evidence is lacking to support such observations (26, 27). As for the other Big Five traits, lower conscientiousness and lower agreeableness were reported to be associated with greater alcohol misuse via a more antisocial paradigm of alcohol consumption and lesser inclination to assume adult roles as well as responsible manner of conduct [e.g., (28)]. In two different studies, Zilberman et al. (29, 30) found all addiction populations to manifest greater impulsivity and neuroticism relative to controls, while individuals with AUDs to also score lower on extraversion, agreeableness, and openness to experience. Next to low agreeableness (particularly the facets compliance and straightforwardness), meta-analytic evidence seems to implicate also lower conscientiousness (mostly the facets deliberation and dutifulness) as a likely predictor of pathological alcohol consumption, with certain facets of extraversion (i.e., excitement seeking) and neuroticism (i.e., impulsiveness and angry hostility) considered accountable for affecting drinking behaviors and alcohol-related problems (15). What this brief review of evidence therefore suggests is that rather than factors per se, it may be certain profiles of characteristics that seem to be related to AUDs.
Nevertheless, despite the quite abundant body of evidence concerning AUD, the question still remains whether it may, in fact, be a product of a more complex interplay among various psychosocial factors, with growing evidence implicating impulsivity as one of its central determinants. A neurocognitive perspective dictates that human capacity to resist craving and make adaptive decisions is regulated by the reflective system, involving i.a. the mechanisms of cognitive inhibitory control and delayed gratification. Conversely, the reflexive processes commonly linked to impulsive and risky behaviors are associated with the automatic (primarily emotional) responses to reward, rendering faster approach tendencies (31). Quite notably, as a multi-faceted notion, impulsivity involves both (impulsive, affect-dominated) choice (when a smaller, but more prompt reward is selected over a delayed one) and (impulsive) action (originating in one’s incapacity to inhibit a dominant behavior) (32), attributable to the underlying reward-seeking mechanisms or poor inhibitory control. It is, thus, deficits and perturbations within both reflective and reflexive systems that are postulated to be accountable for the combination of compulsive substance seeking and reduced controlled decision-making ability observed in AUDs. And so, there is evidence of impulsivity’s effect on alcohol use outcomes (33) and the severity of alcohol dependence (34). Patients with AUDs have also been reported to manifest cognitive deficits, with high impulsivity scores among them (35, 36) and impaired decision-making due to elevated impulsivity (37). Nevertheless, other findings suggest that heavy alcohol use may be linked with different facets of impulsivity (as it is in the case of personality-related factors), which may motivate its consumption in numerous ways, suggesting there is more area to investigate, thus implicating, e.g., the deficient response inhibition that seems to be a risk factor here due to its association with increased craving in response to alcohol cues (38).
Not surprisingly then, a number of social and environmental cues (such as substance-related settings, interactions, and paraphernalia) combined with individual sensitivity may be implicated in the development of AUDs on the one hand and maintenance of abstinence on the other (39). Of note, vulnerability to alcohol-related cues accompanied with reward anticipation are likely triggers of, first, a neural (reward pathway activation), and second, a subsequent behavioral response. Available neurobiological evidence c.f. (40–42) suggests that SUDs (AUDs included) may stem from impaired neuroplasticity and that the presence of substance-related socio-environmental cues may elicit behavioral and corresponding neurobiological responses, thus linking impulsivity, social cues, and cognitive function. Quite notably, compared to light drinkers, alcohol-dependent drinkers exhibit stronger reactions to alcohol-related cues and personality factors may be involved in cue reactivity, with impulsivity a likely candidate (38).
Another significant marker of AUD, not to mention a likely target of intervention is impaired control over drinking (43, 44). Though related to impulsivity, it is still a conceptually distinct notion (45, 46), the former constituting a so-to-speak behavioral trigger, while the latter is understood in terms of a response inhibition tool. Transition to AUD is postulated to involve a shift from impulsive toward compulsive behavior, which entails impairment within executive control processes (47), i.e., a potential facet of a more general breakdown in behavioral control (understood in terms of the ability to activate and inhibit behavioral responses) (48). Interestingly, the role of impaired control over alcohol consumption in its associations with impulsivity is less clear and requires further investigation (49).
In addition, it remains unknown whether the postulated relationships between personality, impulsivity and impaired control over alcohol use in AUD may be in any way affected by comorbid depressive disorder, which remains a research priority given the high incidence of mood dysregulation in clinical samples (49). Depression is frequently associated with at-risk drinking c.f. (50), both highly prevalent, with approximately 280 million adults affected (51), 20% of whom also reported to meet diagnostic criteria for AUD (52). There is a theorized role of negative emotional state underlying addiction pathology (53), and links between depressive symptoms and failures in drinking control have been postulated in literature (44). In view of the emergence of the COVID-19 pandemic, whose aftermath has contributed to exacerbation of numerous determinants of poor mental health (54), including depression and substance use disorders, the urgency to target the links between them seems greater than ever.
Given the detrimental impact of compulsive alcohol consumption on various aspects of human functioning and the still insufficient methods to combat AUDs, the pursuit of their likely determinants remains timely and valid. In view of that, in this study we sought to investigate the effect of personality-related factors and depression symptomatology level on (i) impulsivity, (ii) cognitive response inhibition, and (iii) the links between the two measures of behavioral control (different facets of impulsivity and response inhibition) in a treatment-seeking AUD population.
Materials and Methods
Participants
Fifty-three Polish male (n = 45) and female (n = 8) inpatients of an alcohol rehabilitation center, aged 25–62 years (M = 42; SD = 8.94) were recruited to participate in an international study (for more information see) (55) evaluating the effect of modern technologies on enhancing treatment as usual (TAU) in the therapy of AUDs. As part of this larger project, upon screening for eligibility and undergoing a baseline interview, all participants were asked to complete a questionnaire set, including the International Personality Item Pool (IPIP-50), the Beck Depression Inventory Second Edition (BDI-II) and the Barratt Impulsiveness Scale (BIS-11), and to perform an alcohol go/no go task. The assessment was carried out within 2 weeks from admission.
TAU lasted for approximately 2 months and consisted mainly of psychological CBT interventions, applied during individual and group sessions. The treatment incorporated psycho-education, functional analysis of drinking situations, development of coping strategies, problem-solving, and homework between the sessions. Prior to enrollment, each patient was provided with written and oral information about the project and gave their formal consent to participate.
Eligibility criteria included: (1) written informed consent to participate in the study; (2) age ≥ 18 years; (3) completed detoxification (if needed); (4) no sensory or motor deficits complicating administration of the alcohol go/no go task; (5) no other SUDs; and (6) no severe psychiatric or neurological comorbidity or terminal somatic illness.
Baseline assessment was carried out with the use of the Mini-International Neuro-psychiatric Interview (MINI) for DSM-5, a structured interview probing the 17 most prevalent psychiatric diagnoses via a set of dichotomous yes/no questions (56, 57).
Psychological Assessment
Personality assessment was performed with the use of the 50-item International Personality Item Pool—a self-report personality test developed by Goldberg (58) to measure the Big Five personality traits, as expressed in Costa and McCrae’s (59) revised NEO personality inventory (NEO-PI-R). The tool is reported to correlate with the NEO-PI-R domain scores ranging between 0.85 and 0.92. Interestingly, the IPIP-50 scales were also reported to outperform their NEO-PI-R counterparts as predictors of various clusters of self-reported behavioral acts.
Depressive symptomatology was measured with the Beck Depression Inventory Second Edition (BDI-II), a 21-item self-report questionnaire and one of the most widely applied psychometric tools for assessing the severity of depression. The test has good reliability (Pearson r = 0.93) and internal consistency values (α = 0.91) (60).
The 30-item Barratt Impulsiveness Scale (BIS-11) was used to assess three facets of impulsivity: (1) attentional (attention and cognitive instability), (2) motor (motor and perseverance); and (3) non-planning (self-control and cognitive complexity). Responses were recorded on a 4-point Likert scale, ranging from 1 = very true for me to 4 = very false for me (61).
Behavioral control was tested with a modified version of the classical Go/No-Go Task [for a detailed description see (56)], typically applied to assess response inhibition (62, 63). The modification involved the use of a set of alcohol-related and neutral visual content to test for inhibition capacity toward alcohol-related cues. Patients were instructed to respond as fast as possible, and without errors to pictures of alcoholic and non-alcoholic drinks appearing on a computer screen, by pressing the space button in response to a non-alcoholic one (i.e., “Go” signals) and to withhold their response when they saw an alcoholic drink (i.e., “NoGo” signals). The two tested measures were response time to “Go” signals as the measure of processing speed, and number of errors as the indicator of capacity to inhibit prepotent response.
Statistical Analysis
All statistical analyses were performed using SPSS 27 and AMOS 7. The normality of distributions was checked using the Shapiro-Wilk test, kurtosis, and skewness. Skewness and kurtosis between –2 and + 2 were assumed to indicate normal distribution of variables (64). Bivariate relationships were assessed with the Pearson r coefficients. Furthermore, Structural Equation Model (SEM) procedure was used to investigate the impact (multiple regression model) of personality and depressive symptomatology on impulsivity and processing speed. The selected indices were: the chi-square statistic (x2), the root mean square error of approximation (RMSEA) (65), the goodness-of-fit index (GFI) (66), and the comparative fit index (CFI) (67). The RMSEA of < 0.06, 0.08–0.10, and > 0.10 were considered to indicate good, adequate, and poor scores, respectively, and GFI, and CFI of > 0.90 were considered to indicate an acceptable fit (68). We used a bootstrap maximum-likelihood estimation with 2,000 samples. Additionally, for a more in-depth investigation of differences between facets of personality and impulsivity, repeated measures analysis of variance (RM-ANOVA) was performed. We used pairwise comparison with Bonferroni and Greenhouse-Geisser corrections for degrees of freedom (only for personality, as Mauchly’s test of sphericity proved significant). For impulsivity, the three facet scores were transformed into unitarized units using the formula xu = [(xi–min)/(max–min) × 100] (ranges from 0 to 100, the higher the score, the greater the self-reported impulsivity). The transformation was necessary as the attentional scale had 8 items only (i.e., fewer than the other two, each one including 11 items).
Results
Participant Characteristics
The sample consisted of 53 male and female participants (n = 45 and n = 8, respectively), aged 25–62 years (M = 42; SD = 8.94), reporting between 8 and 26 years of education (M = 13.377; SD = 2.989). Drinking initiation age (concerning alcohol intake in any amount at least 3 times per week) ranged between 13 and 51 years (M = 25.923; SD = 9.416), while duration of drinking (≥ 3 times per week) ranged between 1 and 46 years (M = 17.154; SD = 9.950). In the last 30 days prior to the study, the participants reported between 0 and 20 days of alcohol consumption (M = 5.358; SD = 5.582).
As for the assessed personality-related factors, the participants scored highest on agreeableness (M = 34.604; SD = 5.333), followed by intellect (M = 32.925; SD = 3.413), conscientiousness (M = 32.264; SD = 6.355), emotional stability (M = 30.302; SD = 4.263), and extraversion (M = 24.906; SD = 6.307). The observed differences were significant, [F(2.84, 147.43) = 25.51; p < 0.001; ɳ2 = 0.33], occurring between extraversion and all other traits (p < 0.001), agreeableness and emotional stability (p = 0.001), and intellect and emotional stability (p = 0.005). Depression symptom severity across the sample reached the mean of M = 11.434 (SD = 8.520), corresponding to minimal severity. Of the three investigated facets of self-report impulsivity, the patients scored highest on non-planning (M = 14.887; SD = 5.243), followed by motor (M = 10.132; SD = 4.532) and attentional impulsivity (M = 8.075; SD = 3.310). The observed significant differences [F(2, 104) = 21.71; p < 0.001; ɳ2 = 0.30] between attentional impulsivity and non-planning (p < 0.001), and motor impulsivity and non-planning (p < 0.001), suggest a significantly higher inclination toward non-planning relative to the two other aspects of impulsivity in our sample. Mean response time (in ms) to Go trials in the Go/No Go task equaled M = 607.421 (SD = 86.844), while mean number of errors was M = 1.057 (SD = 1.499).
Detailed demographic, clinical, and psychological participant characteristics are presented in Table 1.
Table 1. Demographic, clinical, and psychological characteristics of participants.
Personality, Depression Symptomatology, and Self-Report Impulsivity
Table 2 presents correlation coefficients for the relation of personality traits, depressive symptoms and self-report impulsivity. Not all personality traits were found to correlated with impulsivity. Extraversion was significantly related to attentional impulsivity (r = 0.379; p < 0.01) and non-planning (r = 0.356; p < 0.01). In turn, significant negative relationships were observed between agreeableness and non-planning (r = –0.349; p < 0.05), and between intellect, motor impulsivity (r = –0.304; p < 0.05) and, again, non-planning (r = 0.484; p < 0.001). Interestingly, depression symptomatology was significantly positively related to all three facets of impulsivity, i.e., attentional (r = 0.529; p < 0.001), motor (r = 0.370; p < 0.01), and non-planning (r = 0.340; p < 0.05).
Table 2. Pearson correlation coefficients for the relation of personality traits and depression symptomatology with impulsivity.
Personality, Depression Symptomatology, and Behavioral Control
Table 3 shows the correlation coefficients for the relation of personality traits and depression symptomatology with behavioral control. The only significant correlation was the negative one observed between intellect and response time as a measure of processing speed (r = –0.344; p < 0.05).
Table 3. Pearson correlation coefficients for the relation of personality traits and depression symptomatology with cognitive response inhibition.
Impulsivity and Cognitive Response Inhibition
Correlation coefficients for self-report impulsivity and cognitive response inhibition are presented in Table 4. No significant links were found between the two measures of behavioral control.
Table 4. Pearson correlation coefficients for impulsivity and cognitive response inhibition.
Personality and Depression Symptomatology as Predictors of Self-Report Impulsivity and Processing Speed
We adopted path analysis methodology within a Structural Equation Model (SEM) framework to test the effect of personality and depression symptomatology on impulsivity and behavioral control. Considering only significant correlations, we decided to add to the model selected paths between personality, depression symptomatology level, and measures of impulsivity and processing speed. Based on the criteria recommended by Hu and Bentler (68), the model showed good fit to data (χ2 = 21.99 and p = 0.341; RMSEA = 0.044 and p = 0.493; GFI = 0.916; CFI = 0.983) (see Figure 1).
Figure 1. Personality and depression symptomatology as predictors of impulsivity and processing speed.
Table 5 presents standardized regression weights for the effects of the four personality dimensions and depression symptomatology on impulsivity and processing speed. As shown, conscientiousness and intellect had an overall effect on non-planning (β =-0.471; p < 0.01 and (β = –0.339; p < 0.01, respectively). In addition, intellect had an effect on reaction time (β = –0.344; p < 0.05). Interestingly, depression symptomatology had an effect on all three aspects of impulsivity [attentional (β = 0.471; p < 0.01), motor (β = 0.357; p < 0.05), and non-planning (β = 0.278; p < 0.05)]. Recorded values of predicting variance were 12% for processing speed, 18% for motor impulsivity, 49% for non-planning impulsivity, and 31% for attentional impulsivity. In general, conscientiousness, intellect, and depression symptomatology were important predictors of self-report impulsivity and processing speed. That is, patients who scored higher on conscientiousness and intellect were likely to describe themselves as less impulsive but tended to respond faster. Moreover, participants with higher levels of depression symptomatology tended to have poorer overall control of impulsivity.
Table 5. Standardized regression weights for all relations.
In addition, we checked the relationship between age and other psychological variables. Only one significant positive correlation emerged between age and extraversion (r = 0.27; p = 0.048). As it was not related to the dependent variables, we did not add it to the SEM model.
Discussion
In this study we demonstrate the effect of personality-related factors and depression symptomatology level on self-report impulsivity and processing speed as the two measures of behavioral control in a treatment-seeking AUD population.
Quite surprisingly, of the five tested personality-related factors, our sample scored the highest on agreeableness and intellect (equivalent to openness), which is quite contrary to the findings of other authors, who tend to report their low levels in AUD cohorts [cf. (29, 30, 15)]. In turn, lower extraversion and emotional stability corresponding to higher neuroticism seem to remain much in line with the results cited in other findings. This particular personality profile, where agreeableness is unexpectedly the most prominent trait, may reflect the fact that our sample was composed of treatment-seeking rehabilitation center inpatients, whose willingness and readiness to conform to certain rules is, by definition, greater than average or otherwise they would not be able to meet admission requirements (a voluntary seclusion in a constrained environment). In turn, intellect, equivalent to openness to experience, may assume predominant values, corresponding with their general readiness to challenge convention, traditional rules, or authority and seek extra stimulation, which is in accordance with descriptions of psychological mechanisms underlying addictive behaviors (69).
According to our findings, certain personality domains and depression symptomatology may predict self-report impulsivity and processing speed, considered two facets of behavioral control in AUD patients. Deemed central to addiction, impaired control could be construed as a multidimensional notion, encompassing impulsivity with its internal latent structure postulated in literature [e.g., (70)]. In the current study, we focused on what could be broadly labeled as impulsive personality trait, i.e., self-reported self-regulatory capacity, and impulsive action, i.e., the capacity to inhibit a prepotent motor response (to alcohol stimuli), which is reflected by: (i) the number of errors and (ii) response time, i.e., processing speed in the Go/NoGo task, and their associations with personality-related factors and self-reported depression symptomatology.
As for the former, in our sample, conscientiousness and intellect seemed not only to correlate with, but also have an overall effect on one of the facets of impulsivity that is non-planning. Our results therefore suggest that greater intensity of (either of) the two traits makes individuals with AUD more likely to engage in future planning and forethought about consequences of their actions, which could also contribute to greater control over alcohol-related consequences. Incidentally, non-planning has been found to be associated with alcohol-related outcomes (71). Of note, although most prevalent across our sample, agreeableness has been deemed insignificant in the applied SEM model.
As for the latter, although deficits in prepotent response inhibition have been associated with diminished capacity to control substance use (72), also in individuals with alcohol dependence (73), in this study we sought to investigate the mechanisms underlying this phenomenon. We found intellect to have an effect on reaction time (c.f. its negative correlation with the Go/NoGo task considered a measure of processing speed). This means that patients who scored higher on intellect tended to require less time to inhibit a prepotent motor response, and thus responded faster to presented visual cues. A possible explanation might be that a generally more pensive inclination characteristic of individuals scoring higher on intellect could mean they need less time for reflection (information processing) before they take action, which thus translates to a faster behavioral response to cues.
Prior research has linked impulsivity to various aspects of problem drinking (74–77). With an aim to better understand the underlying mechanism of such an association, we set out to identify which facets thereof are implicated with alcohol outcomes. In our sample, it was non-planning that turned out to be its most prevalent aspect, followed by motor and attentional impulsivity. Furthermore, our findings complement existing evidence on the links between personality contributors to impulsive behavior [e.g., (76, 78)]. The observed positive correlations between extraversion, attentional impulsivity and non-planning may reflect extraverted individuals’ elevated activity levels and excitement seeking nature, predisposing them to increased recklessness, lesser forethought and limited ability to focus on one item only. The negative association between agreeableness and non-planning may be accounted for by the thoughtfulness of others (and consequences of actions toward them), which is characteristic of highly agreeable persons and lacking in their impulsive counterparts. Likewise, negative associations between intellect, motor impulsivity and, again, non-planning illustrate the inverse relationship between the intellectual fondness of reflection and rash, reckless action with little precaution.
Against our expectations, no significant links were observed between self-report impulsivity and behavioral control. As such, this might be a relevant finding to support the notion that impaired control represents a related but separate construct rather than a facet of impulsivity, as postulated in other works (45). For impulsive behavior has been analyzed based on both impulsive self-reported personality traits and behavioral tasks [e.g., (79–81)], showing little overlap between the two (self-report and behavioral) measures and suggesting that they could actually assess distinct tendencies (79). This might illustrate how self-report measures could be construed as relative to the emotional/motivational underpinnings of impulsive behavior, while behavioral tasks reflect cognitive processes implicated in such behaviors, thus further supporting the distinct nature of the two. The interaction of both mechanisms is postulated to affect behavior, making their study highly encouraged for a comprehensive understanding of impulsive behavior in substance use disorders (80). This drinking-related reduced capacity of control may also be understood as a component of a more general breakdown in behavioral control related to alcohol use (48), and although linked to impulsivity, another complex, multi-faceted construct with relevance to various aspects of alcohol use disorders and other addictive behaviors (81–83), represent an independent theoretical entity. This means that in otherwise impulsive individuals, dysregulated response to alcohol might constitute a specific manifestation of general tendencies toward impaired behavioral control, but it may also occur in those who do not exhibit generally impulsive traits. Alternatively, the incongruous results of the two applied impulsivity measures suggesting considerable qualitative differences between them could be attributed to and imply deficits within metacognitive processes, i.e., little awareness of their actual behavioral impulsivity level and/or an unrealistic representation of their functioning in AUD patients c.f. (84). Such meta-cognitive bias could be another way to explain distinct self-report and experimental outcomes. This then goes to show that both impulsivity and impaired control in AUD cohorts, as well as the interplay between them remain all the more worthy of further theoretical and empirical attention.
Interestingly, depression symptomatology level proved to be related to all three aspects of self-report impulsivity (attentional, motor, and non-planning), in that more depressive participants tended to report poorer overall behavioral control, i.e., the levels of all facets thereof were higher in more depressive individuals. A more depressive mood therefore predicted a reduced ability to focus attention, the tendency to act without thinking and give little or no thought to consequences of own actions. We therefore found, as did other authors previously, that depression symptoms may interfere with drinking control, especially when coupled with tendencies to react impulsively to negative affect (49). Loss of behavioral control may occur in response to expectations that alcohol use could alleviate negative emotion, triggered by tendencies to act on impulses. This way drinking could be used as a means to regulate negative affect (85). Those suffering from persistent depressed mood and negative affective states could therefore prove more vulnerable to engage in coping-motivated drinking, expecting alcohol use to relieve tension and experiencing failures in control when responding impulsively to these expectations. Hence, symptoms of depression may contribute to increasing coping-motivated drinking and/or reducing regulatory capacities underlying adaptive coping.
Certain limitations of the current study outline promising research directions. Most notably, our findings were based on a rather small and homogenous (also gender-wise) sample of treatment-seeking rehabilitation center inpatients, which could contribute to a particular personality profile thereof. Limited variability in terms of Go/NoGo errors and depression symptomatology alongside little control for covariates mark significant study limitations, precluding meaningful conclusions concerning a prepotent response inhibition. Future research could therefore consider its replication in larger alcohol use populations with greater variability in demographics and drinking outcomes. Similarly, while the subjective facet of behavioral control seems to be well captured via the use of self-report tools, they tend to lack the objectivity offered by e.g., informant ratings or experimental paradigms. In an effort to reduce reliance on self-report measures, future research endeavors could be further extended to boost ecological validity and shift away from the conventional clinical settings toward the virtual reality-based trials. Yet another promising research direction neglected here but emerging from this study is the investigation of metacognitive ability in AUD patients with the likely neurobiological contributions to this phenomenon.
Conclusion
In conclusion, the current study demonstrates the significant effect of conscientiousness, intellect, and depression symptomatology on impulsivity and processing speed, suggesting that personality and depression level may serve as important predictors of behavioral control measures in recovering drinkers. No significant links were observed between impulsivity and cognitive response inhibition suggesting that the two measures of behavioral control support a separate nature of the two notions. Therefore, our findings go above and beyond identifying the mere links of personality- and control-related factors with alcohol use outcomes, but rather they shed light on the interactions underlying the mechanisms implicated in the development and maintenance of AUDs and as such constitute significant evidence in alcohol addiction research.
Data Availability Statement
The raw data supporting the conclusions of this article will be made available by the authors, without undue reservation.
Ethics Statement
The studies involving human participants were reviewed and approved by the Bioethics Committee of the Pomeranian Medical University in Szczecin, Poland. The patients/participants provided their written informed consent to participate in this study.
Author Contributions
ZL, AM, LM, SK, AN, JW, and JK-M contributed to the conception and design of the study. ZL, TS, AJ, ET, and JK-M organized the database. ZL and ET performed the statistical analysis. ZL wrote the first draft of the manuscript. All authors contributed to manuscript revision, read, and approved the submitted version.
Funding
This study was unconditionally funded by the “Baltic Game Industry—Empowering a Booster for Regional Development “(BGI) grant, which is part of the Interreg Baltic Sea Region (BSR), supported by the European Union’s Regional Development fund. Contact information: Christine Sauter, Tel: + 49 (030) 809 94 113, bgi@bgz-berlin.de. BGI/BSR have neither reviewed our protocol in its present form nor has the funding partner imposed any specific constraint or requirements for our study. We are granted full scientific authority to design and conduct this study, and BGI/BSR will not have any or be involved in the interpretation, reporting or publishing the results. Project funded under the Ministry of Science and Higher Education program called “Regional Excellence Initiative” in 2019–2022, project number: 002/RID/2018/19, funding amount 12,000,000 PLN.”
Conflict of Interest
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
Publisher’s Note
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Keywords: alcohol use disorders (AUDs), personality, depression, behavioral control, impulsivity, response inhibition
Citation: Lebiecka Z, Skoneczny T, Tyburski E, Samochowiec J, Jędrzejewski A, Wirtz J, Kühn S, Nielsen AS, Mellentin AI, Michelis LA and Kucharska-Mazur J (2022) Personality-Related Factors and Depressive Symptomatology Predict Behavioral Control in Patients With Alcohol Use Disorders. Front. Psychiatry 13:866657. doi: 10.3389/fpsyt.2022.866657
Received: 31 January 2022; Accepted: 20 June 2022;
Published: 07 July 2022.
Edited by:
Marc N. Potenza, Yale University, United StatesReviewed by:
Melanie L. Schwandt, National Institutes of Health (NIH), United StatesMauro Ceccanti, Sapienza University of Rome, Italy
Copyright © 2022 Lebiecka, Skoneczny, Tyburski, Samochowiec, Jędrzejewski, Wirtz, Kühn, Nielsen, Mellentin, Michelis and Kucharska-Mazur. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: Zofia Lebiecka, zofia.lebiecka@gmail.com