Section APPLIED ANTHROPOLOGY HERITABILITY OF PHYSICAL ACTIVITY, DIETARY HABITS AND SLEEP PATTERNS IN A FAMILY-BASED SAMPLE OF SPANISH ROMA INDIVIDUALS Rebato Esther1 , Ibaсez Maria Eugenia1 , Poveda Alaitz1,2 1Department of Genetics, Physical Anthropology and Animal Physiology. <...> University of the Basque Country (UPV/EHU), Bilbao, Spain 2 Genetic and Molecular Epidemiology Unit, Lund University Diabetes Center, Department of Clinical Sciences, Skеne University Hospital, Lund University, Malmц, Sweden The infl uence of genetic factors on the variation of self-reported physical in/activity, dietary habits and sleep patterns was evaluated in 50 large and extended pedigrees, including 372 Roma individuals (147 males and 225 females) living in the Greater Bilbao (Spain). <...> Information characterizing environmental variables (physical in/activity, dietary habits and sleep patterns) was obtained by personal interview using a standardized questionnaire. <...> Univariate quantitative genetic analyses were conducted employing the SOLAR computer program. <...> After accounting for signifi cant covariates effects, heritability estimates were, in general, signifi cant (p< 0.01), with moderate values ranging from 0.20–0.39. <...> Practice of sports, walking activity and time spent eating the main meal of the day were the variables most infl uenced by additive genetic effects, showing heritability estimates of 0.39, 0.37 and 0.35, respectively. <...> In conclusion, evidence of a slight but signifi cant genetic contribution on variation of physical in/activity, sleep patterns and dietary habits has been found in this Spanish Roma population. <...> Key words: family, heritability, genetics, environment, exercise Contact information: Rebato Esther, e-mail: esther.rebato@ehu.es, Poveda Alaitz, e-mail: alaitz.poveda@ehu.es. 41 ADOLESCENCE NOW AND BEFORE: INTERACTIONS BETWEEN THE PSYCHOBIOLOGICAL AND THE SOCIO-CULTURAL FACTORS IN THE CHANGED CONDITIONS OF GROWING UP Rudan Vlasta Faculty of Medicine, University of Zagreb, Clinic for Psychological Medicine, Croatia The research of and observations related to adolescence often lead to partly contradictory results. <...> It may at times seem that adolescence has changed in the recent decades, and at other times that it has remained the same (Briggs, 2008). <...> Research however indicates to the fact that particular parameters in relation to adolescence have indeed changed <...>