Personality Traits, Early Maladaptive Schemas, and Severity of Nonsuicidal Self-Injury Sarah D
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https://doi.org/10.24839/2325-7342.JN22.3.181 Personality Traits, Early Maladaptive Schemas, and Severity of Nonsuicidal Self-Injury Sarah D. Arthurs and Josephine C. H. Tan* Lakehead University ABSTRACT. Nonsuicidal self-injury (NSSI) is used to regulate emotions and communicate distress. Research has examined its prevalence, forms, and functions, but little is known about its severity and the personality and cognitive correlates. This study examined personality traits and early maladaptive schemas in a Canadian nonclinical sample (N = 156, age M = 25.23 years, SD = 8.14 years) consisting of 3 equal-sized groups (n = 52; 43 women, 9 men), matched on sex and age, and that varied on NSSI severity: high NSSI, low NSSI, and control. Participants completed the Deliberate Self-Harm Inventory, Big Five Inventory, and Early Maladaptive Schema Questionnaire – Short Form. Results showed that high and low NSSI groups scored significantly higher than the control on neuroticism, and significantly lower on extraversion, agreeableness, and conscientiousness (Cohen’s d ranges between .50 and 1.53; p ranges from < .01 to < .001). High Open Data and Open NSSI group was significantly less agreeable than Low NSSI Materials badges earned group (Cohen’s d = .37; p = .04). Both high and low NSSI for transparent research practices. Data and groups scored significantly higher on all early maladaptive materials are available schemas (Cohen’s d ranges between .63 and 1.71; p ranges at https://osf.io/2qncf/ from < .01 to < .001), except for self-sacrifice beliefs. High NSSI group was significantly higher than Low NSSI (Cohen’s d = .60; p = .005) and control (Cohen’s d = .69; p < .001) groups on beliefs related to unrelenting standards. Given the link between perfectionism and suicide, the findings support the importance of focusing on specific maladaptive beliefs in NSSI with implications for interventions. onsuicidal self-injury (NSSI) involves and repetition rates exceed 40% (Kripalani, self-inflicted damage to bodily tissues Badanapuram, Gash, & Morris, 2007). Higher Nwithout suicidal intent, and is often used rates of self-harm incidents and the number of as a coping mechanism for distress (Nock, 2009). methods used (e.g., cutting, sticking with pins, Lifetime prevalence rates range from 13% to burning, punching) are reflective of more severe 23.2% for nonclinical samples (Jacobson & Gould, levels of NSSI (MacLaren & Best, 2010; Whitlock, 2007), and 17% to 35% for college samples Muehlenkamp, & Eckenrode, 2008). Persons FALL 2017 (Whitlock, Eckenrode, & Silverman, 2006). Among who self-harm repeatedly often require injuries clinical samples, prevalence rates are as high as of increasing severity in order to experience the PSI CHI JOURNAL OF 60% (DiClemente, Ponton, & Hartley, 1991), desired effects, predisposing these individuals to PSYCHOLOGICAL RESEARCH *Faculty mentor COPYRIGHT 2017 BY PSI CHI, THE INTERNATIONAL HONOR SOCIETY IN PSYCHOLOGY (VOL. 22, NO. 3/ISSN 2325-7342) 181 Personality, EMS, and NSSI | Arthurs and Tan scarring, medical complications, and future mood traits: neuroticism, extraversion, agreeableness, disturbances (Lundh, Wängby-Lundh, Paaske, conscientiousness, and openness to experience Ingesson, & Bjärehed, 2010). Over time, NSSI (McCrae & John, 1992). Research has shown that can desensitize people to self-inflicted violence, NSSI in students is related to high neuroticism and increasing their risk for suicide (Joiner, 2007). openness to experience, and to low agreeableness Self-harm is regarded as treatment-interfering and conscientiousness (Allroggen et al., 2014; and resistant to change (Linehan, 1993), revealing Brown, 2009; MacLaren & Best, 2010). Among a significant need to identify risk factors and patients with eating disorders, NSSI is linked to reinforcing functions that inform NSSI-targeted low extraversion (Claes, Vandereycken, & Vertom- interventions. men, 2004). Furthermore, research using a college NSSI is widely viewed as a means of emotion sample demonstrated that the number of NSSI regulation (Nock & Prinstein, 2004). Research methods is positively associated with openness to has suggested that negative affect often precedes experience and negatively related to conscientious- self-harm behaviours, self-injury is associated with ness (Robertson, Miskey, Mitchell, & Nelson-Gray, a temporary reduction in aversive emotions, and 2013). NSSI acts are performed to reduce negative emo- tional states (see review by Klonsky, 2007). NSSI is NSSI and EMS also highly associated with psychological disorders Early maladaptive schemas are negative beliefs about that are marked by emotion dysregulation such the self and world that develop when a child with as borderline personality disorder, post-traumatic a predisposition for emotional lability is exposed stress disorder, and eating disorders (Claes, Klonsky, to negative social environments. EMS represent Muehlenkamp, Kuppens, & Vandereycken, 2010; patterns of rigid unconditional assumptions that Linehan, 1993), giving further credence to the are often formed in emotion, difficult to unlearn, view that self-harm acts can serve as a method of and result in dysfunctional stress-coping (Young et emotion regulation. al., 2003). According to the schema theory, there Nock (2009) proposed a model delineating the are five EMS domains and 15 associated core beliefs. pathway through which self-harm develops and is Individuals with Disconnection and Rejection maintained as a preferred method of stress coping. beliefs expect that security, nurturance/love, and The author suggested that distal risk factors (e.g., acceptance will not be consistently provided by childhood maltreatment, genetic predispositions) others; this domain includes emotional deprivation, lead to individual (e.g., high aversive emotions) abandonment/instability, mistrust/abuse, social and interpersonal (e.g., poor communication alienation, and defectiveness/shame beliefs. The skills) vulnerabilities, which then mediate stress Impaired Autonomy domain describes an inability responses (e.g., over-arousal) that are attenuated to separate oneself from significant others, as well by self-injury. According to this model, individuals as beliefs that one is incompetent and incapable with genetic predispositions for heightened emo- of functioning independently; beliefs under this tional and cognitive reactivity, and who experience domain include failure to achieve, dependence/ highly aversive emotions (e.g., anger, dysphoria, incompetence, vulnerability to harm, and enmesh- shame) and cognitions (e.g., negative thoughts ment. The Other-Directedness domain describes an marked by rumination and self-criticism), are at excessive focus on the needs and desires of others, increased risk for repetitive NSSI. The quality of often at the expense of one’s own health and well- one’s emotional and cognitive content underlie being; these include subjugation and self-sacrifice an individual’s expression of personality (Costa beliefs. Individuals with Emotional Inhibition beliefs & Widiger, 2002) and early maladaptive schemas excessively inhibit spontaneous emotion and com- (EMS; Young, Klosko, & Weishaar, 2003), both of munication, or might exhibit unreasonably high which take shape in early childhood and influence standards for themselves; these include emotional one’s intra- and interpersonal experiences across inhibition and unrelenting standards beliefs. the lifespan. Scant research has been carried out Finally, the Impaired Limits domain describes poor to investigate these psychological constructs as self-control and low frustration tolerance, as well FALL 2017 predictors of NSSI severity. as beliefs that one is superior and should not be required to follow the same social rules as others; PSI CHI JOURNAL OF NSSI and Personality beliefs under this domain include entitlement and PSYCHOLOGICAL The dominant model of personality involves five insufficient self-control. RESEARCH 182 COPYRIGHT 2017 BY PSI CHI, THE INTERNATIONAL HONOR SOCIETY IN PSYCHOLOGY (VOL. 22, NO. 3/ISSN 2325-7342) Arthurs and Tan | Personality, EMS, and NSSI Research has suggested a link between EMS risk for self-directed violence and informing the and NSSI through aversive childhood experi- urgency/nature of preventative strategies. ences. For example, EMS have been found to be The present study compared the personality associated with negative parenting and childhood traits and EMS beliefs in three age- and sex-matched maltreatment, and to mediate the relation between nonclinical groups of varying NSSI severity: high perceived quality of parenting and psychiatric NSSI, low NSSI, and no NSSI control. It was symptoms (Dale, Power, Kane, Stewart, & Murray, predicted that, compared to the control, both the 2010; Wright, Crawford, & Del Castillo, 2009). In a high and low NSSI groups would show greater similar vein, NSSI has been found to be associated neuroticism and openness to experience, and lower with higher rates of childhood trauma (Barker, agreeableness, conscientiousness, and extraversion Arsenault, Brendgen, Fontaine, & Maughan, 2008; (Hypothesis 1), as well as endorse EMS beliefs more Fliege, Lee, Grimm, & Klapp, 2009; Gratz, 2003) strongly (Hypothesis 2). It was also predicted that and poorer family relationships (Di Pierro, Samo, the high NSSI group would have stronger EMS Perego, Gallucci, & Madeddu, 2012; Kaess et al., beliefs that are associated with the Disconnection 2013), with NSSI severity specifically related to and Rejection domain than the