Researchers state that around 80-90% of adolescents share photos on social networking sites (SNS) (Anderson & Jiang, 2018), which may have positive and negative consequences on adolescents’ health. However, it is still unclear why adolescents engage in such kind of behaviour. Thus, the aim of this study is to find out if the Prototype Willingness Model (PWM) can explain adolescents’ risky photo disclosure on SNS. To reach this aim, a survey study was conducted among a sample of adolescents (N = 586; Mage = 14.65, SDage = 1.36; 56.9% female). Students were asked to fill in hard copy questionnaires, assessing the factors of reasoned (intention) and reactive (willingness) pathways of the PWM and risky photo disclosure on SNS. In order to test adolescents’ intention and willingness of risky photo disclosure on SNS, structural equation modelling (SEM) analysis was performed using Mplus. The results of the hypothesized model showed acceptable model fit: χ² = 3950.467, p < .001; RMSEA = .064, 90% CI [.062, .067], CFI = .935, TLI = .931. According to the results, we can state that adolescents’ risky photo disclosure on SNS is better explained by the factors of the reasoned pathway (intention) than the reactive pathway (willingness).

Aim. Adolescents’ online self-disclosure has a positive influence on adolescents’ development but may also be related to risks that adolescents may not be able to overcome. Thus, the purpose of this study is to find out what do adolescents think about the risks of online self-disclosure and what are the coping strategies they use to overcome these risks.  Methods. To reach the purpose of the study, four focus groups have been organized. Students were asked what do they think about online self-disclosure and what kind of strategies do they use to overcome negative consequences of risky online disclosure. Content analysis has been used to analyse the collected data. Twenty-one students (18 females and 3 males, 11-17 years), have participated in the study. Results and conclusion. The results of the study have shown that the coping strategies adolescents use are: asking help from adults, stalker prevention, online privacy management, and awareness of online self-disclosure.  Key words: online self-disclosure, adolescents, risky behaviour.

Nowadays adolescents use the Internet very often in their daily life activities what, according to the researchers, causes their engagement in risky online behaviour. Youth school's students may be at greater risks online as they generally come from socially riskier or single-parent families. Thus, the purpose of this study is to find out if there are any differences between youth and secondary schools' students' engagement in risky online behaviours. Research method -cross-sectional survey with a questionnaire, created using a variety of risky online behaviour forms (e.g., communicates with unknown people; visit pornographic sites). The tendency to engage in any risky behaviour participants had to rate on the scale from 1 (never engage) to 6 (always engage). The participants also had to answer some demographical questions about their family, age, and gender. 195 students (105 female and 90 male; mean age -14.8) have participated in the study. Results have shown that youth school's students are more likely than secondary school's students to post photos of age forbidden behaviour and to post rude, offensive comments. Students engagement in risky online behaviour is related to their age and time spent online: older and using the Internet more often students are more likely to engage in risky online behaviours. Thus, older students and students who spend more time on the Internet are more susceptible to online risks despite their social environment. More attention should be paid for youth's risky online behaviour psychological interventions.

It is said that nowadays online self-disclosure plays an essential role in adolescents’ development and it gains a lot of attention of today’s researchers. However, it is still unclear what are the particular psychosocial factors related to adolescents’ online self-disclosure as in general researchers analyse specific elements (e.g., narcissism, privacy concerns), related to the aims of their study. Thus, the systematic literature review has been organised on purpose to find out what are the most significant psychosocial factors related to adolescents’ online self-disclosure. After the process of selection, 24 articles (from 1936) have been analysed. The systematic literature review has shown that psychosocial factors of adolescents’ online self-disclosure may be distinguished into three groups: psychological (personal characteristics and motives), socio-demographical and social-contextual factors. Particular results of psychosocial factors and papers included in the study are discussed, together with limitations and directions for future research. Keywords: Adolescents, online self-disclosure, psychosocial factors.

Researchers state that adolescents are likely to engage in risky photo disclosure online, which might be related to their emotions and personal characteristics. Research Questions: How positive and negative emotions when sharing risky photos online are related to adolescents' risky photo disclosure online? How important personal characteristics are related to adolescents' risky photo disclosure online? The purpose of this study is to find out how positive and negative emotions are related to adolescents' tendency to engage in risky photo disclosure and how personal characteristics (narcissism, social anxiety and privacy concern) are related to such kind of behaviour. A randomised cross-sectional survey with a hardcopy questionnaire, based on the measures of variety of the forms of risky photo disclosure online (e.g., sharing nude photos); frequency of risky photo disclosure when feeling positive and negative emotions; personal characteristics (social anxiety, narcissism and privacy concern) was conducted in 2019. 459 adolescents (59.1% female) aged 12-17 years old (M=14.55, SD=1.24) participated in the study. The results of the study showed that positive and negative emotions towards sharing risky photos on risky photo disclosure online (F=136.85, p<.001) explains 56% of actual adolescents' risky photo disclosure, with the strongest predictor of positive emotions (β=0.82, p˂α); personal characteristics (F=8.57, p˂α) explain only 9.6% of risky photo disclosure online, with the strongest predictor of narcissism (β=0.25, p˂α). According to the results, we conclude that positive emotions towards sharing risky photos online and more expressed narcissistic personality trait increases adolescents' tendency to engage in risky photo disclosure online.