The purpose of this paper is to investigate the presence of externalising youth problems and to explore the contribution of different personal and environmental factors to their development. The study was conducted with 1101 pupils of 1st grades of secondary schools (with the average age 15.18 years) from central Croatia. The following instruments were used: Self-report questionnaire of risk and delinquent behaviours (Ajdukovic, Rajhvajn Bulat & Susac, 2015), NEO- -FFI (Costa & McCrae, 1992), Inventory of parent and peer attachment (Armsden & Greenberg, 1987), Parental monitoring scale (Silverberg & Small, 1991), Perceived peer pressure questionnaire and Relation to school questionnaire. Results have shown that undesirable normative behaviours are more frequent than both peer violence and misdemeanours/delinquent acts, with the most frequent being the consumption of alcohol. Extraversion and agreeableness, as variables related to adolescent personality, have the largest role in explaining the externalising problems of high school students, while the most important environmental variables are parental control, alienation from mother, peer pressure on risky and socially acceptable behaviours, and relation to school.

中文翻译：

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个人和环境变量在解释青少年外在行为中的贡献

本文的目的是调查外部青年问题的存在，并探讨不同的个人和环境因素对其发展的贡献。这项研究是对来自克罗地亚中部的1101名初中一年级学生（平均年龄为15.18岁）进行的。使用了以下工具：风险和违法行为的自我报告调查表（Ajdukovic，Rajhvajn Bulat和Susac，2015年），NEO--FFI（Costa和McCrae，1992年），父母和同伴依恋清单（Armsden和Greenberg，1987年） ），父母监护量表（Silverberg＆Small，1991），知觉同伴压力问卷和与学校的关系问卷。结果表明，不良的规范行为比同伴暴力行为和轻蔑/不良行为更为常见，最常见的是饮酒。作为与青少年人格相关的变量，外向性和顺应性在解释高中生的外在问题方面起着最大的作用，而最重要的环境变量是父母的控制，与母亲的疏远，同伴对风险和社会可接受行为的压力以及人际关系去学校。