• Korean Journal of Biological Psychiatry
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• v.25 no.4
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• pp.118-124
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• 2018

Objectives Although impulsivity has long been thought as an important factor influencing suicidal behaviors, it is unknown whether impulsivity increases the risk of dying from suicidal behaviors and what specific component among constructs of impulsivity contributes to the risk of dying among suicide attempters. Methods To elucidate the association between impulsivity and medical lethality of suicide attempt among suicide attempters, we consecutively recruited 46 suicide attempters who visited an emergency room of a general hospital located in a metropolitan area, Seoul, Republic of Korea, due to suicide attempts and consented to participate in this study. Then we assessed medical lethality with the Beck Lethality Scale (LS) and impulsivity with the Korean version of the Barratt Impulsiveness Scale-11-Revised (BIS). Demographic variables were obtained from medical records and structured social work reports for suicide attempters. Results Although total scores of the BIS did not correlate with LS scores, only the scores of self-control, that is one of the Barrett's six theoretical constructs of impulsivity in which the higher score indicates less self-control and more impulsivity, had a significant positive correlation with scores of LS (p = 0.003). The association remained significant after adjusting for variables known to affect suicide lethality such as job status, recent alcohol consumption, diagnosis of depressive disorders, and having a plan for suicide (${\beta}=0.429$, p = 0.009). Conclusions Not impulsivity in general, but poor self-control, in particular, predicts lethal suicidal behaviors among suicide attempters. The degree of self-control should be evaluated when assessing patients with elevated suicide risk, and proper measures should be installed to prevent possible future lethal suicide attempts.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.20 no.1
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• pp.17-22
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• 2009

Objectives : A higher level of aggression has been reported for children with attention-deficit/hyperactivity disorder (ADHD) than for non-ADHD children. Aggression was shown to have a negative effect on the social functioning of children with ADHD. The ability to recognize facial emotion expression has also been related to aggression. In this study, we examined whether impulsivity and dysfunctional recognition of facial emotion expression could explain the aggressiveness of children with ADHD. Methods : 67 children with ADHD participated in this study. We measured the ability to recognize facial emotion expression by using the Emotion Recognition Test (ERT) and we measured aggression by the T score of the aggression subscale of the Child Behavior Checklist (CBCL). Impulsivity was measured by the ADHD diagnostic system (ADS). Results : The teacher rated level of aggression was related to the score of recognizing negative affect. After controlling for the effect of impulsivity, this relationship is not significant. Only the score of the visual commission errors ex plained the level of aggression of children with ADHD. Conclusion : Impulsivity seems to have a major role in explaining the aggression of children with ADHD. The clinical implication of this study is that effective intervention for controlling impulsivity may be expected to reduce the aggression of children with ADHD.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.32 no.2
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• pp.43-50
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• 2021

Objectives: The purpose of this study was to evaluate the effects of a school bullying prevention camp for adolescent perpetrators of school violence. Methods: A total of 95 adolescents (boys=73, girls=22) were included in this study. The changes after the program were evaluated using several self-rating scales for the assessment of the degree of depression, loneliness, impulsivity, self-esteem, and interpersonal reactivity compared with the baseline scales. Results: The school bullying prevention camp significantly reduced the degree of depression severity (z=-5.874, p<0.001) and impulsivity scale (z=-3.861, p<0.001), while increasing self-esteem (z=-2.091, p=0.037). The degree of depression severity (z=-4.635, p<0.001), loneliness (z=-2.168, p=0.030), and impulsivity (z=-2.987, p=0.003) significantly reduced, whereas self-esteem significantly increased (z=-2.221, p=0.026) for male students who had no history of child abuse. However, there were no significant changes after the program for the degree of depression, loneliness, impulsivity, self-esteem, and interpersonal reactivity among female students with a history of child abuse. Conclusion: The results of our study suggest that the development of diverse standardized guidance programs is necessary for teenagers with different characteristics and backgrounds. Such programs are expected to be more effective in preventing school violence.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.1
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• pp.368-378
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• 2018

This study examined the relationship between hostility and obsessive-compulsive symptoms to clarify the differential role of overt hostility and covert hostility on obsessive-compulsive symptoms. In addition, this study examined whether impulsivity has a moderating effect on the relationship between hostility measures and obsessive-compulsive symptoms. The Buss Durkee Hostility Inventory (BDHI), Revised Obsessive Compulsive Inventory (OCI-R), and Barratt Impulsivity Scale (BIS) were used to measure hostility, obsessive-compulsive symptoms, and impulsivity, respectively. Data were collected from 150 online university students and analyzed using the correlation and moderated multiple regression model. The result showed that overt hostility was positively correlated with obsessive thoughts; covert hostility was positively correlated with obsessive thoughts and compulsive behavior. In addition, the regression results, which set the hostility variables as the predicting variable, revealed covert hostility to increase obsessive thinking and compulsive behavior, whereas overt hostility had no significant effect on both variables. Impulsivity was found to function as a moderator in the prediction of covert hostility on obsessive thought. With the result, the implications and limitations of this study are discussed.

• Human Ecology Research
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• v.52 no.6
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• pp.639-649
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• 2014

The main purpose of this study was to find the relationship between the delinquency-onset time in the source and the continuity of delinquency. In order to achieve this objective, we divided 350 first-year high school students into three groups early-onset type, late-onset type, and non-delinquent adolescents on the basis of the delinquency onset. The results of this study were as follow: (1) for the boys, the early-onset type shows a higher continuity of delinquency than both the late-onset type and the general adolescents. On the other hand, for the girls, the early-onset type shows a higher continuity of delinquency than the late-onset type, but there was no difference in the persistence duration between the late-onset type and the non-delinquent adolescents. (2) For the boys, the examination reveals that the early-onset type has a higher degree of sensation seeking and impulsivity than the general adolescents. In addition, the early-onset type shows a higher degree of sensation seeking than the late-onset type, whereas the two show no difference in impulsivity. For the girls, sensation seeking did not show any difference depending on the delinquency onset. However, more impulsivity appeared in the early-onset type than in the late-onset type or the non-delinquent adolescents. (3) The relative priorities of variables determining the group to which the students belong on the basis of the delinquency onset are in the order of sensation seeking and juvenile impulsivity. Therefore, this study, suggests that the early-onset type requires a different kind of intervention than the late-onset type.

• Anxiety and mood
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• v.16 no.1
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• pp.41-48
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• 2020

Objective : There have been limited scientific studies differentiating those who attempt suicide from those who think about suicide but do not attempt suicide. Altered event-related potential (ERP) performance, such as GoNogo ERP has been regarded as the neurocognitive processes associated with behavioral inhibition and poor impulse control. The purpose of this study was to investigate the association between Nogo ERP and suicide attempt. Methods : A total of 63 participants (33 participants with suicide ideation and 30 with suicide attempt) were recruited, and performed GoNogo tasks during the electroencephalogram measurement. Depression, anxiety, emotional regulation and impulsivity were evaluated by self-rating scales. The clinical measures and Nogo P3 component were compared between the groups. The correlational analyse was conducted to evaluate the relationship between the clinical characteristics and the Nogo P3 component. Results : Participants with suicide attempt significantly decreased the Nogo P3 amplitudes at the frontal-central electrode than participants with suicide ideation (p=0.004, FDR adjusted p=0.032). In the correlation analysis, the Nogo P3 amplitude at frontal-central electrode was correlated with the total score of the Barrett impulsivity scale (r=-0.383, p=0.002), attentional impulsivity (r=-0.365, p=0.003) and motor impulsivity (r=-0.389, p=0.002) subscales of the Barrett impulsivity scale. Conclusion : These findings suggest that the decreased Nogo P3 amplitude may be one of the candidates of biological marker for poor impulse control in those who attempt suicide.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.11
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• pp.7607-7616
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• 2015

The present study sought to identify the differences in levels of depression and impulsivity depending on hours on SNS among Korean adolescents. Data for this study was collected from the responses of 1,008 of middle and high school students in Seoul in 2014. The upper 33%(N=364) and the lower 33%(N=319) of students who reported to spend lots of time on SNS were extracted from the total data to constitute two groups for analysis. The sample was analyzed utilizing SEM to compare depression and impulsivity levels of the upper group with those of the lower group while controlling for gender. In conclusion, there was a significant difference in level of depression and impulsivity between the two groups. The upper group that spent more time on SNS displayed higher levels of depression and impulsivity. The result of this study means that the more time the adolescents spend on SNS the more likely the adolescents are to be depressed and impulsive.

• Research in Community and Public Health Nursing
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• v.32 no.3
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• pp.325-343
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• 2021

Purpose: The purpose of this study is to determine the results of a meta-analysis of impulsivity variables related to self-destructive behavior of South Korean adolescents. Methods: A meta-analysis was carried out according to the Cochrane guidelines criteria and the quality of the studies was evaluated using the JBI checklist. 2,333 studies were collected through the databases of RISS, KISS, and DBpia on 'impulsivity' published from 2000 to 2020. Self-destructive behavior-related variables were largely categorized into three areas (addiction, violence, and delinquency), and six subgroups. Results: Using the correlations with impulsivity in the final 53 papers, 231 self-destructive behavior-related variables were identified. The social delinquency showed the closest relationship with impulsivity (ES=0.34, 95% CI: 0.23~0.43, p<.001), followed by addictive behavior (ES=0.28, 95% CI: 0.24~0.32, p<.001), personal delinquency (ES=0.28, 95% CI: 0.23~0.32, p<.001), violence against others, violence against self, and substance addiction. These effects were identified as ranging from magnitudes of 0.23 to 0.27 based on the criteria of Cohen. Conclusion: To improve the reliability of the results of meta-analysis, more studies on the impulsivity of adolescents should be carried out so that the results can be accumulated, and the effectiveness can be examined in-depth later.

• The Journal of the Korea Contents Association
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• v.21 no.9
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• pp.502-515
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• 2021

This study aimed to examine the influence of negative life events on delinquency through a dual-mediation of depression and impulsivity among out-of-school adolescents. For the purpose, using a sample of adolescents who were out of school at the point of participating in the 1st survey of the Panel Survey of School Dropouts and Model 6 of the PROCESS macro for SPSS, this study analyzed the direct influence of negative life events on delinquency as well as the mediation and dual-mediation effects of depression and impulsivity. The main results are as follows. First, out-of-school adolescents' negative life events had a significant positive influence on delinquency. Second, out-of-school adolescents' depression did not mediate the influence of negative life events on delinquency. Third, out-of-school adolescents' impulsivity mediated the influence of negative life events on delinquency. Fourth, out-of-school adolescents' depression and impulsivity dual-mediated the influence of negative life events on delinquency. Based on these results, this study discussed diverse strategies to prevent the delinquency of out-of-school adolescents who experienced negative life events.

• Journal of Digital Convergence
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• v.17 no.1
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• pp.269-280
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• 2019

The purpose of this study was to identify the influencing factors on smartphone overdependence by examining the relationships between smartphone overdependence, self-determination, depression, self-esteem, and impulsivity in male and female college students. The self-reported questionnaires were administered to 263 students from two colleges. As results of multiple regression analysis, the factors affecting smartphone overdependence in male students were the perception of smartphone importance (${\beta}=.411$, p<.001), impulsivity (${\beta}=.204$, p=.007), and depression (${\beta}=.200$, p=.040). In female students, influencing factors were the perception of smartphone importance (${\beta}=.630$, p<.001) and impulsivity (${\beta}=.185$, p=.010). Based on the findings, a tailored smartphone overdependence prevention program is needed by controlling impulsivity and changing distorted perceptions of smartphone.