While children that grow up in nice suburban communities are not exposed to bad environments they are more likely to participate in activities that can benefit their identity and contribute to a more successful identity development. Unlike children, teens put forth an effort to look presentable Hall's assertions stood relatively uncontested until the s when psychologists such as Erik Erikson and Anna Freud started to formulate their theories about adolescence. Divided attention , the ability to pay attention to two or more stimuli at the same time, also improves. The principle of the importance of timing in one's life refers to the different impact that life events have on development based on when in one's life they occur. More Information on Treatment and Services for Children with ADHD Ages Among children with ADHD, parents reported that just under 9 out of 10 children received school support at some point in their lives, which includes school accommodations and help in the classroom.
Wisdom is not the same as intelligence: Accordingly, youth, a period that spans late adolescence and early adulthood, has become a more prominent stage of the life course. In males, these changes involve appearance of pubic, facial, and body hair, deepening of the voice, roughening of the skin around the upper arms and thighs, and increased development of the sweat glands. Risk-taking Because most injuries sustained by adolescents are related to risky behavior car crashes , alcohol, unprotected sex , a great deal of research has been done on the cognitive and emotional processes underlying adolescent risk-taking. Changes in the levels of the neurotransmitters dopamine and serotonin in the limbic system make adolescents more emotional and more responsive to rewards and stress. The structure has changed to resemble an adult form. Self-concept The idea of self-concept is known as the ability of a person to have opinions and beliefs that are defined confidently, consistent and stable. Hormones play an organizational role, priming the body to behave in a certain way once puberty begins,  and an active role, referring to changes in hormones during adolescence that trigger behavioral and physical changes. Dopamine is associated with pleasure and attuning to the environment during decision-making. Through experience outside the family circle, they learn that rules they were taught as absolute are in fact relativistic. This is triggered by the pituitary gland , which secretes a surge of hormonal agents into the blood stream, initiating a chain reaction to occur. Some theorists believe that there are many different possible developmental paths one could take, and that the specific path an individual follows may be determined by their sex, orientation, and when they reached the onset of puberty. In contrast, boys are more concerned with establishing and asserting their independence and defining their relation to authority. In the third stage of identity assumption, which usually takes place a few years after the adolescent has left home, adolescents begin to come out to their family and close friends, and assumes a self-definition as gay, lesbian, or bisexual. The male and female gonads are subsequently activated, which puts them into a state of rapid growth and development; the triggered gonads now commence the mass production of the necessary chemicals. Based on the work of Piaget , it takes a quantitative, state-theory approach, hypothesizing that adolescents' cognitive improvement is relatively sudden and drastic. During adolescence, dopamine levels in the limbic system increase and input of dopamine to the prefrontal cortex increases. Pubescent boys often tend to have a good body image, are more confident, secure, and more independent. Data collection began in and continued until , allowing the researchers to gather longitudinal data on the individuals that extended past adolescence into adulthood. Puberty is a period of several years in which rapid physical growth and psychological changes occur, culminating in sexual maturity. Metacognition A third gain in cognitive ability involves thinking about thinking itself, a process referred to as metacognition. Researcher James Marcia developed the current method for testing an individual's progress along these stages. Adolescents also develop a more sophisticated understanding of probability. About 2 out of 10 children had taken dietary supplements. He described the resolution of this process as a stage of "identity achievement" but also stressed that the identity challenge "is never fully resolved once and for all at one point in time". The effect of serotonin is not limited to the limbic system:
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