Prevalence of self-injury performed by adolescents aged 16-19 years.

Objectives: The aim of the study was to assess the prevalence of self-injury among adolescents aged 16-19 years and to indicate demographic variable, selected environmental variables and risky behaviours coexisting with performing self-injuries by the respondents.

Methods: The research encompassed 5,685 individuals, aged 16-19 years. During the research the Questionnaire designed by the authors was used.

Prevalence of Internet addiction and risk of developing addiction as exemplified by a group of Polish adolescents from urban and rural areas.

Objective: The objective of the study was to determine the prevalence of Internet addiction and the risk of developing this addiction in Polish adolescents attending junior high schools and high school in Lublin Province, to indicate the differences regarding the intensity of Internet addiction symptoms, and the types of online activity of adolescents residing in urban and rural areas.

Material And Methods: The examined group comprised 1,860 participants (1,320 girls and 540 boys) with an average age of 17 years. 760 students lived in urban areas and 1,100 lived in rural areas.

Psychoactive substances use experience and addiction or risk of addiction among by Polish adolescents living in rural and urban areas.

The objective of the study was to determine the similarities and differences between adolescents with psychoactive substances use experience living in urban and rural areas as regards the intensity of Internet addiction symptoms as well as the evaluation of prevalence of psychoactive substances use among adolescents depending on the place of residence. The examined group consisted of 1 860 people (1 320 girls and 540 boys) their average age being 17 years. In the study the following research methods were used: the Sociodemographic Questionnaire designed by the authors, the Internet Addiction Questionnaire by Potembska, the Internet Addiction test by Young, the Internet Addiction Questionnaire (KBUI) designed by Pawłowska and Potembska.