Assessment of the Italian Version of the Internet Disorder Scale (IDS-15)

Hikikomori (prolonged social withdrawal) and co-occurring psychiatric disorders and symptoms in adolescents and young adults: A scoping review

BACKGROUND

Hikikomori, or prolonged social withdrawal, is a clinical condition usually emerging during adolescence or young adulthood, characterized by severe self-isolation in one's home, and often associated with other psychiatric disorders and symptoms.

OBJECTIVE

The study summarized evidence of hikikomori diagnostic criteria, clinical manifestations, and comorbidity with psychiatric disorders and symptoms in adolescents and young adults.

METHODS

A scoping review was conducted following PRISMA guidelines, with four electronic databases searched for original works in English, French, and Italian published since 2010.

RESULTS

A total of 15 studies were selected, 7 involved adolescents, 4 young adults, and 4 participants from both age groups. Most studies relied on the diagnostic criteria proposed for hikikomori inclusion in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). Differences in hikikomori and comorbidity profiles were identified between adolescents and young adults.

CONCLUSIONS

Heterogeneity characterized hikikomori diagnostic criteria, comorbidity, demographic and clinical features of the study samples. Studies adopting more homogeneous populations, shared diagnostic criteria, consistent assessment tools and longitudinal designs are needed to better clarify the clinical features of hikikomori in young people.

Psychometric Validation of the Compulsive Internet Use Scale in Spanish Adolescents

Despite problematic internet use being especially high among adolescents, there are no screening instruments in Spain specifically for adolescents that would facilitate early detection of this problem. The main goal of this study was to validate the Compulsive Internet Use Scale (CIUS) in the adolescent Spanish population as well as to analyze the discriminative capacity of CIUS based on sociodemographic characteristics, grade point average, and other addictive behaviors. Data were obtained from the ESTUDES, a representative survey of addictive behaviors of Spanish adolescents. The sample consisted of a total of 34,308 adolescents aged between 14 and 18 years old (Mage = 15.70; SD = 1.19; 51.7% females). Results indicated that the CIUS fit a unidimensional structure, exhibited measurement invariance with respect to sex and age, and demonstrated excellent reliability (ω = .94). Past-month tobacco, alcohol, and cannabis use, as well as past-year gambling and gaming, were related to CIUS scores. A standardized screening instrument that provides valid, reliable information on young people's use of the Internet in Spain is a critical requirement for successful early detection and intervention in this population.

Sex and national differences in internet addiction in Egypt and Saudi Arabia

BACKGROUND

Understanding individual differences in psychology, and how they relate to specific addictions, may allow society to better identify those at most risk and even enact policies to ameliorate them. Internet addiction is a growing health concern, a research focus of which is to understand individual differences and the psychology of those most susceptible to developing it. Western countries are strongly overrepresented in this regard.

METHOD

Here, sex and national differences in internet addiction are measured, using Young's 'Internet Addiction Test,' in two non-Western countries, Egypt and Saudi Arabia. >800 students aged 18 and 35 years (M = 20.65, SD = 1.48) completed a multidimensional internet addiction instrument. The instrument measures traits such as Withdrawal and Social Problems, Time Management and Performance and Reality Substitute.

RESULTS

Analyses revealed that males scored higher than females and Saudis higher than Egyptians on nearly all scales, including the total score. Factor analysis of the 20-item instrument revealed three factors, all exhibiting sex and culture differences.

CONCLUSIONS

These findings add to the body of evidence that males are higher than females in problematic internet use, as they are in addictive behaviors in general. Our findings may also imply that restrictions on male-female interaction, which are more pronounced in Saudi Arabia, may elevate the prevalence of internet addiction. The internet is also easier and cheaper to access in Saudi Arabia than in Egypt.

COVID-19 Pandemic and Internet Addiction in Young Adults: A Pilot Study on Positive and Negative Psychosocial Correlates

Objective

During and after the lockdowns of the COVID-19 pandemic period, a strain was put on young adults who have taken refuge in the problematic use of internet, social media, gaming, and gambling. This paper aims to investigate possible correlates of Internet Addiction Disorder (IAD), hypothesizing anxiety, depression and perceived stress would promote addiction, while mindfulness skills, resilience and socialization would, conversely, hamper IAD, and promote, consequently, a more functional internet use.

Method

A pilot study was carried out with a sample of 31 young adults, recruited through a snowball sampling using social networks. Participants filled out an online questionnaire including the following measures: Internet Use, Abuse and Addiction (UADI), Beck Depression Inventory (BDI-II); State-Trait Anxiety Inventory (STAI-Y); Perceived Stress Scale (PSS); Five Facet Mindfulness Questionnaire (FFMQ); Mindfulness Attention and Awareness Scale (MAAS); Resilience Scale (RS-14). It was also administered an ad hoc questionnaire for the assessment of socialization behaviour (6 items) and gambling (2 items).

Results

All the measures, but socialization, showed adequate reliability. Our sample showed high levels of anxiety, stress, IA and gambling, while presenting low levels of resilience, the mindful skill of no-reactivity and socialization. The first hypothesis was confirmed, finding positive and significant correlations between Internet Addiction on one side and PSS, STAI-Y1, STAY-2, and BDI II on the other side. We also partially confirmed the second hypothesis about UADI negatively correlated with both RS-14 and Mindful Acting. Finally, no correlations were found between Gambling and IA.

Conclusions

In conclusion, the more one perceives an emotional overload with less stress-control, high anxiety, and depression, and the less one can leverage on the skills of mindful acting and resilience, the more one uses the internet as a strategy to escape from a threatening reality.

Symptoms of Prolonged Social Withdrawal, Problematic Internet Use, and Psychotic-Like Experiences in Emerging Adulthood: A Moderation Model

Objective

Prolonged social withdrawal (PSW) or hikikomori and problematic internet use (PIU) have attracted the attention of mental health experts worldwide. The scientific literature suggests a complex relationship between these conditions and psychotic-like experiences (PLEs) or disorders. In the present cross-sectional study, we tested the role of PIU symptoms as a moderator of the relationship between symptoms of PSW and PLEs in a sample of 238 Italian emerging adults.

Method

Data was collected using the 25-item Hikikomori Questionnaire, the Internet Disorder Scale, the Brief Prodromal Questionnaire, and the Brief Symptom Inventory. In addition, lifetime psychological disorders and drug and alcohol use during the last month were explored. No participant reported a lifetime episode of schizophrenia or other psychotic disorder.

Results

Symptoms of PSW and PIU were significantly associated with PLEs total distress and PLEs total number of symptoms endorsed, after adjustment for age and symptoms of depression and anxiety. Further, PIU symptoms moderated the relationship between symptoms of PSW and PLEs total distress (b= 2.745, s.e.= 1.089, p= 0.012). However, PIU symptoms did not moderate the relationship between PSW and PLEs total symptoms (b= 0.615, s.e.= 0.349, p= 0.078). This study is limited because the participants were most likely university students and because of the cross-sectional design.

Conclusions

Findings from this study partially support the role of high symptoms of PIU as a risk factor in the relationship between symptoms of PSW and PLEs. Future longitudinal research is needed to confirm our findings examining the temporal relationship between PSW, PIU, and PLEs using both dimensional and categorical approaches.

Psychometric properties of the Slovenian version of Internet Disorder Scale-IDS-15

BACKGROUND

Conceptualising internet addiction and assessing its symptoms has presented a significant challenge for researchers over the past 25 years. Recently, the Internet Disorder Scale (IDS-15), which is based on the criteria for Internet Gaming Disorder (IGD) from DSM-5, has emerged as a promising instrument to assess internet addiction. The main objective of the present study was to evaluate the psychometric properties of the Slovenian IDS-15.

METHODS

The sample was recruited from the National Survey on the Use of Tobacco, Alcohol and Other Drugs that was conducted in 2018 on a nationally representative sample (N  =  16,000; age range: 15-64 years; 62.4% response rate). The final sample comprised 9,161 participants, with 80.9% reporting having used the internet at least once a week (n  =  7,413). A structured questionnaire was designed and internet addiction was assessed using the IDS-15.

RESULTS

Confirmatory Factor Analysis showed acceptable fit to the proposed four-factor structure of the IDS-15. The reliability, and criterion, convergent and discriminant validity were also found to be adequate with a notable exception of the first item of the scale, as shown by its lower factor loading and higher variability. Additionally, latent profile analysis was used to distinguish between internet users with low (n = 3,818; 51.5%), medium (n = 3,111; 42.0%) and high (n = 484; 6.4%) addiction risk. Furthermore, the high-risk class was associated with higher IDS-15 factor scores, higher frequency of internet use in leisure time, and lower age of first internet use.

CONCLUSIONS

The present study provides new insights about the strengths and shortcomings of the IDS-15. Moreover, the results provide an insight into the prevalence of internet addiction in Slovenia, as well as associations with other potential factors. The results serve as the basis for further analyses on internet addiction epidemiology, policymaking activities, and design for targeted public health interventions in Slovenia.

Psychometric Properties of the Italian Version of the 25-Item Hikikomori Questionnaire

A serious form of social withdrawal, initially described within Japan as hikikomori, has received increasing attention from the international scientific community during the last decade. The 25-item Hikikomori Questionnaire (HQ-25) was initially developed and validated in Japan. To date, data on its psychometric properties in other populations where cases of hikikomori have been described are still scarce. Thus, the aims of this study were to (1) translate, adapt, and validate the Italian version of the HQ-25 analyzing its psychometric properties; and (2) verify the association between hikikomori and personality functioning, social support, and problematic Internet use. A sample of 372 Italian adults aged 18 to 50 years completed the HQ-25 and measures of psychoticism, personality dysfunction, social support, and problematic Internet use were employed to test the convergent validity of the HQ-25. The data showed a satisfactory fit for a three-factor model, significantly better than a one-factor model. The three factors (socialization, isolation, and emotional support, as in the original study on the HQ-25) correlated positively with psychoticism, personality dysfunction, and problematic Internet use, and correlated negatively with social support. A lifetime history of hikikomori was present in 1.1% of the sample (n = 4). This is the first study to use the Italian validated version of the HQ-25 with an adult population. The findings from this study provide evidence of the satisfactory psychometric properties of the Italian version of the HQ-25 and support further investigation of the HQ-25 as an instrument to help screen for and investigate the presence of hikikomori.

Evaluation of psychometric properties of the Arabic version of the Internet Disorder Scale (IDS-15)

The internet in modern society has impacted individuals of all ages, especially youth. Over the past 25 years, internet has become increasingly accessible, affordable, and available to a large proportion of individuals worldwide. Despite the clear advantages the internet has brought, adverse effects including potential disordered internet use have been noted among a minority of users. This has led to an increase in the development of screening instruments and numerous validation studies in many countries. Although Arabic is spoken in 25 countries worldwide, little research has been carried out, probably because there is a lack of Arabic instruments assessing problematic internet use. The present study evaluated the psychometric properties of the Arabic version of the 15-item Internet Disorder Scale (IDS-15). A cross-sectional study was conducted among 327 active internet users (35.5 % male; mean age = 21.49 years [SD = 3.06]) using a pen-and-paper-based survey. All participants completed the IDS-15, Bergen Social Media Addiction Scale (BSMAS), and Satisfaction with Life Scale (SWLS). The concurrent validity of the Arabic IDS-15 was satisfactory as its total score was significantly correlated with scores on the BSMAS (standardized coefficient [β] = 0.382), time spent online (β = 0.310), time spent on social media (β = 0.368), time spent on sleep (β = -0.176), and SWLS score (β = -0.281). The internal consistency indicated good internal reliability. Confirmatory factor analysis supported the factor structure of the IDS-15. The Arabic version IDS-15 is a psychometrically sound and robust instrument for assessing internet disorder due to its excellent concurrent validity, good reliability, and satisfactory construct validity.

Psychometric Properties of the Italian Version of the 25-Item Hikikomori Questionnaire for Adolescents

Hikikomori is a form of social withdrawal that is commonly described as having an onset during adolescence, a life stage when other psychiatric problems can also emerge. This study aimed to adapt the 25-item Hikikomori Questionnaire (HQ-25) for the Italian adolescent population, examining its psychometric properties; associations between hikikomori and psychoticism, depression, anxiety, problematic internet use (PIU), psychotic-like experiences (PLEs), to confirm convergent validity of the HQ-25; and the interaction effect between symptoms of hikikomori and PIU in predicting PLEs. Two-hundred and twenty-one adolescents participated in the study. Measures included the HQ-25, the Psychoticism subscale of the Personality Inventory for the Diagnostic and Statistical Manual of Mental Disorders, the Depression and Anxiety subscales of the Brief Symptom Inventory, the Internet Disorder Scale, and the Brief Prodromal Questionnaire. Data showed a satisfactory fit for a three-factor model for the HQ-25 that is consistent with the original study on the HQ-25. Three factors (socialization, isolation, and emotional support) were associated with psychopathology measures. Six participants reported lifetime history of hikikomori. Symptoms of hikikomori and PIU did not interact in predicting PLEs. This is the first study to validate the HQ-25 in a population of adolescents. Findings provide initial evidence of the adequate psychometric properties of the Italian version of the HQ-25 for adolescents.

Relationships between depression, health‑related behaviors, and internet addiction in female junior college students

Introduction

Depressive emotions can lead to subsequent unhealthy behaviors such as Internet addiction, especially in female adolescents; therefore, studies that examine the relationships among depression, health‑related behaviors, and Internet addiction in female adolescents are warranted.

Purpose

To examine (1) the relationship between depression and health-related behaviors and (2) the relationship between depression and Internet addiction.

Method

A cross-sectional study design was adopted using a structured questionnaire to measure depression, health-related behaviors, and Internet addiction in female adolescents. The data were collected from students of a junior college in southern Taiwan using convenience sampling to select the participants. The questionnaire was divided into four sections: demographics, the Center for Epidemiologic Studies Depression Scale (CES-D), the Health Promoting Lifestyle Profile (HPLP), and the Internet Addiction Test (IAT).

Results

The final sample comprised 503 female junior college students, with the participants mainly aged between 15 to 22 years (mean age = 17.30 years, SD = 1.34). Regarding the HPLP scores, the overall score, nutrition subscale score, and self-actualization subscale score were significantly and negatively associated with the CES-D depression score (p < 0.05–0.01). In other words, depression level was lower in students who exhibited more healthy behaviors, put more emphasis on dietary health, and had higher levels of self-admiration and confidence toward life. Regarding the IAT scores, the overall score and six domain scores were all positively associated (p < 0.01) to the CES-D depression score. In other words, the higher an individual’s Internet addiction score was, the higher her depression level was.

Conclusions

The results confirmed the relationship between depression, health-related behaviors, and Internet addiction. The cultivation of health-related behaviors may help in lowering depressive symptoms. Teenagers with depression have higher risks of developing Internet addiction, and such addiction is likely to affect their daily functioning.

Psychometric evaluation of the Persian Internet Disorder Scale among adolescents

BACKGROUND AND AIMS

Given the growing epidemiological research interest concerning Internet addiction, brief instruments with a robust theoretical basis are warranted. The Internet Disorder Scale (IDS-15) is one such instrument that can be used to quickly assess the Internet addiction in an individual. However, only two language versions of the IDS-15 have been developed. This study translated the IDS-15 into Persian and examined its psychometric properties using comprehensive psychometric testing.

METHODS

After ensuring the linguistic validity of the Persian IDS-15, 1,272 adolescents (mean age = 15.53 years; 728 males) completed the IDS-15, Depression Anxiety Stress Scale (DASS), Internet Gaming Disorder Scale - Short Form (IGDS9-SF), and the Bergen Social Media Addiction Scale (BSMAS). Confirmatory factor analysis (CFA), Rasch models, regression analysis, and latent profile analysis (LPA) were carried out to test the psychometric properties of the Persian IDS-15.

RESULTS

Both CFA and Rasch supported the construct validity of the Persian IDS-15. Multigroup analysis in CFA and differential item functioning in Rasch indicated that male and female adolescents interpreted the IDS-15 items similarly. Regression analysis showed that the IDS-15 correlated with IGDS9-SF and BSMAS (ΔR² = .12 and .36, respectively) is stronger than the DASS (ΔR² = .03-.05). LPA based on IDS-15 suggests three subgroups for the sample. Significant differences in depression, anxiety, IGDS9-SF, and BSMAS were found among the three LPA subgroups.

CONCLUSION

The Persian IDS-15 has robust psychometric properties as evidenced by both classical test theory and Rasch analysis.