During the adolescence period changes in behaviour of an individual are noticeable: lessons are being skipped, authority of parents and teachers is not being acknowledged; there appears the need to be among teenagers, to use alcoholic drinks, to smoke, which leads to aggressive behaviour with other teenagers and that is why increase in crime and even occasional suicides are observed. The scientific literature usually analyzes the learning motives and kinds of motivation, however changes in the learning motivation and their causes as well as the behaviour in the period of adolescence are analyzed very little. The aim of this research is to analyze how junior teenagersۥ behaviour decides their learning motivation. The objects of the research are the following: 1) to adduce the reasoning of behaviour; 2) to evaluate the psychological peculiarities of adolescence period as well as the values and the influence of environmental factors on their formation; 3) to discuss the efficiency the motives and kinds of motivation; 4) to cary out the questioning among senior teenagers and to define how factors conditioning their behaviour, such as communication, school, relations with family and the culture of behaviour decide their learning motivation. The research has been carried out in Kaunas “Azuolas” catholic secondary school using questionnaire method where 186 10th-12th formers have been questioned. After analyzing the research data the following conclusions are drawn: 1) The most... [to full text]