Background. The influence of mild traumatic brain injury (MTBI) on mental functions is not given a proper account in modern neurology and neuropsychology. The data published provide information on the state of higher mental functions (HMF) and on disturbances of the psychological well-being of children and adolescents after MTBI. The analysis of research materials in this area provides data on disorders associated with both local and cerebral symptoms, which form a diverse picture of cognitive and behavioural disorders.

The Objective is to study HMF in adolescents of 10-14 years old after TBI of mild severity as part of the methodology of neuropsychological syndrome analysis (Luria, 1973). Design. The study is based on the original set of techniques designed by A.R. Luria. We focused on assessing the status of various HMF components (motor areas, gnostic areas of memory and intelligence). We also studied the mental activity in its regulatory and dynamic aspects. The population included 31 patients with MTBI and 20 healthy subjects.

Results. The analysis of the results showed that violations of HMF in the acute period were represented by three types of syndromes. The leading place in each syndrome is occupied by deficiency symptoms of non-specific brain structures.

Conclusion. The information obtained enriches the knowledge of neuropsychology about the patterns of development of brain systems and related mental functions in adolescence, and also allows one to choose more suitable options for rehabilitation effects aimed at improving the adaptation of patients, enhancing their quality of life, and preventing negative consequences of MTBI.

The Objective of the research is to study the characteristics of character properties, emotional intelligence, social psychological adaptation of Internet addicted adolescents and adolescents addicted with drugs.

Design. A comparative study of the psychological properties of cannabinoid addicted adolescents (n = 20) and Internet addicted adolescents (n = 20), and also healthy adolescents without symptoms of addiction (n = 20) is conducted. The following methods are used in the study: Barratt’s impulsiveness scale (BIS-11), 1987, adapted by T.I. Medvedeva and S.N. Enikolopov, 2015, Cloninger temperament and character questionnaire (TCI-125), 1991, adapted by N.A. Almaev and L.D. Ostrovskaya, 2005, the methodology for diagnosing emotional intelligence MSCEITV 2.0 2002, adapted by E.A. Sergienko, N.I. Vetrova, 2009, the methodology for diagnosing the social psychological adapted by K. Rogers and R. Diamond, 1954, adapted by A.K. Osnitsky, 2002, Chen Internet Addiction Scale (CIAS), 2003 adapted by V.L. Malygin and K.A. Feklisov, 2010

Results. Adolescents with Internet addiction and adolescents with cannabinoid addiction have a certain similarity in a number of characteristic features. They are characterized by a more pronounced motor impulsiveness, low self-control, low self-esteem, dependence on other individulas and circumstances, lack of clear life goals. In general, if compared to healthy adolescents they appear to be infantile individuals, socially maladjusted, more often experiencing emotional discomfort, which can result in pathologies, i.e. particularly various types of addictive behaviour. Simultaneously, Internet-dependent adolescents are significantly different from those with cannabinoid addiction. They are characterized by a lower level of transcendence and a lesser inclination to spiritual practices and transpersonal experience accordingly. They have a low level of search for novelty, which characterizes them as conservative, rigid and passive individuals.

Conclusion. The data obtained reveal certain differences in the psychological mechanisms of Internet addiction and dependence on drugs. Psychological mechanisms of adolescent Internet addiction and dependence on cannabinoids have significant differences.