Adolescence is a period that begins with the puberty, approximately at the age of 12, and ends with the early adulthood, in the 18th. This period is probably one of the hardest in people’s lives since that is when children face a significant stage of development, gain the identity and relative independence, and enter the adult life. Emotional Changes One of the most noticeable changes for children who enter their adolescence period is that they become more emotional, their mood changes too quickly, even to themselves (Raising Children Network, & the Centre for Adolescent Health, 2015). Because of all of those ups and downs the risk of misunderstandings and conflicts is always high. Additionally, teens are not used to the whole range of emotions that people experience, which is why it is not easy for them to understand adults. It happens that they can misread the mimicry or gestures. The second significant change is that teens are self-conscious at that age (Raising Children Network, & the Centre for Adolescent Health, 2015). They begin to notice and evaluate their own appearance, as well as changes in it. They also might compare their bodies and facial features with those of their peers. As the consequence, many complexes can appear. Finally, in addition to all of this, teens take the first steps in decision-making, usually through trial and error. Social Changes Social changes are closely connected with emotional ones. Because of incipient self-esteem, teens are searching for the identity – they want to find out “where they fit in the world” (Raising Children Network, & the Centre for Adolescent Health, 2015, par. 4). They also try to gain some independence and find more experiences on their own. That usually involves many risks, which is why children at this age are not so good at decision-making. Steinberg (2005) even describes them as “poor decision-makers” because of the high rates of alcohol abuse, drug use, unsafe sex, etc. (p. 72). In addition, the priorities in communication and relationships change. Teens become less close to their parents spending more time with their friends. As Miriam Kaufman states, “People spend their childhood learning to be like their parents, and their adolescence learning who they are and how they are different from their parents” (Raising Children Network, & the Centre for Adolescent Health, 2015, par. 3). Finally, during their adolescence, teens start relatively serious relations with the opposite sex, and the first dates occur. The Risks of Adolescence and Development Lines of Behavior Pulkkinen, Kaprio, and Rose (2006) examine the socioemotional behavior of teens starting with eight years and ending with twenty. They assume that the roots of socioemotional behavior in adolescence lie in childhood and its consequences affect adulthood. The authors divide teens into four types: A, B, C, and D. Type A is Reveller. It starts with the low-controlled behavior at the age of eight and continues in adolescence with various unsupervised activities. Teens who belong to this type usually gather, try alcohol and cigarettes, have early sexual relations. They become unpredictable and even aggressive, have a lot of serious conflicts with their parents. All of this, accor