Publications by authors named "Johanna Klar"

2 Publications

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Excessive and pathological Internet use - Risk-behavior or psychopathology?

Addict Behav 2021 12 9;123:107045. Epub 2021 Jul 9.

National Centre for Suicide Research and Prevention of Mental Ill-Health (NASP), Karolinska Institutet, Stockholm, Sweden.

Pathological Internet use (but only with respect to gaming) is classified as mental disorder in the ICD-11. However, there is a large group of adolescents showing excessive Internet use, which may rather be considered adolescent risk-behavior. The aim was to test whether pathological and excessive Internet use should be considered as "psychopathology" or "risk-behavior". A representative, cross-sectional sample of 11.110 students from 10 European Union countries was analyzed. Structural equation models, including the factors "risk-behavior" and "psychopathology" and the variables excessive and pathological Internet use, were tested against each other. "Risk-behavior" was operationalized by several risk-behaviors (e.g. drug abuse, truancy, etc). "Psychopathology" included measures of several mental disorders (e.g. depression, hyperactivity, etc). Excessive Internet use was assessed as the duration and frequency of Internet use. Pathological Internet use was assessed with the Young Diagnostic Questionnaire (i.e., presence of addiction criteria). Excessive Internet use loaded on "risk-behavior" (λ = 0.484, p < .001) and on "psychopathology" (λ = 0.071, p < .007). Pathological Internet use loaded on "risk-behavior" (λ = 0.333, p < .001) and on "psychopathology" (λ = 0.852, p < .001). Chi-square tests determined that the loadings of excessive Internet use (χ (1) = 81.98, p < .001) were significantly stronger on "risk-behavior" than "psychopathology". Vice versa, pathological Internet use loaded significantly stronger on "psychopathology" (χ (1) = 107.10, p < .001). The results indicate that pathological Internet use should rather be considered as psychopathology. Excessive Internet use on the other hand, should be classified as adolescent risk-behavior.
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December 2021

[Relationship Between (Pathological) Internet Use and Sleep Problems in a Longitudinal Study].

Prax Kinderpsychol Kinderpsychiatr 2019 Feb;68(2):146-159

Universitätsklinik für Kinder- und Jugendpsychiatrie und Psychotherapie Universitäre Psychiatrische Dienste Bolligenstrasse 111, Stöckli CH-3000 Bern 60 Schweiz Universitätsklinik für Kinder- und Jugendpsychiatrie und Psychotherapie.

Relationship Between (Pathological) Internet Use and Sleep Problems in a Longitudinal Study Excessive or pathological Internet use has already been associated with sleep disorders, but the direction of the connection remains still uncertain. The relationship between (pathological) Internet use and sleep problems in adolescence was investigated by a representative longitudinal survey of data from a sample of 1,060 students from Heidelberg and the surrounding area (SEYLE study). The students, on average 15 years old, responded at a baseline and after one year to a survey on sleep and Internet use. In addition to the number of hours of Internet use, pathological Internet use was assessed using the Young Diagnostic Questionnaire (YDQ). Sleep duration and sleep problems were surveyed by self-assessment. The prevalence of adolescents with pathological Internet use was 3.71 % in the follow-up survey. Furthermore, 20.48 % of adolescents reported sleep problems. Pathological and excessive Internet use were predictors of sleep problems over the course of one year. Adolescents who met the criteria for Internet addiction to the baseline had a 3.6 times greater risk of developing sleep problems in the course of one year. Whereas sleep problems to the baseline increased the YDQ symptoms only by 0.22. Sleep problems often occur as a result of pathological Internet use and could have an addiction-enhancing effect as well as mediating further psychiatric comorbidities. Thus, sleep problems should be targeted for early intervention and therapeutic measures.
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February 2019