(redirected from Problem behaviors)
Also found in: Dictionary, Thesaurus, Medical, Legal.


time of life from onset of puberty to full adulthood. The exact period of adolescence, which varies from person to person, falls approximately between the ages 12 and 20 and encompasses both physiological and psychological changes. Physiological changes lead to sexual maturity and usually occur during the first several years of the period. This process of physical changes is known as puberty, and it generally takes place in girls between the ages of 8 and 14, and boys between the ages of 9 and 16. In puberty, the pituitary gland increases its production of gonadotropins, which in turn stimulate the production of predominantly estrogen in girls, and predominantly testosterone in boys. Estrogen and testosterone are responsible for breast development, hair growth on the face and body, and deepening voice. These physical changes signal a range of psychological changes, which manifest themselves throughout adolescence, varying significantly from person to person and from one culture to another. Psychological changes generally include questioning of identity and achievement of an appropriate sex role; movement toward personal independence; and social changes in which, for a time, the most important factor is peer group relations. Adolescence in Western societies tends to be a period of rebellion against adult authority figures, often parents or school officials, in the search for personal identity. Many psychologists regard adolescence as a byproduct of social pressures specific to given societies, not as a unique period of biological turmoil. In fact, the classification of a period of life as "adolescence" is a relatively recent development in many Western societies, one that is not recognized as a distinct phase of life in many other cultures.


See T. Hine, The Rise and Fall of the American Teenager (1999).


the stage in the LIFE COURSE between childhood and adulthood marked by the beginnings of adult sexuality but coming before full adult status or final detachment from the FAMILY OF ORIGIN OR ORIENTATION.

In simple societies the passage from childhood to adulthood is often marked by rites de passage (see RITUAL), or by the provision of young mens (and less often young women's) AGE SETS. However, it is within modern societies, with their distinctive emphasis on YOUTH CULTURE, fostered by the MASS MEDIA OF COMMUNICATION, that adolescence has achieved a particular importance. In these societies, in contrast to more TRADITIONAL SOCIETIES, adolescents must choose their CAREERS and sexual partners as well as their general LIFESTYLE. Thus adolescence, the time of educational examinations and entry into work, is also a stage in the life cycle which is associated with individual experimentation in sexual and leisure behaviour. It may also be a time for questioning received values, and of rebellion against parental patterns of behaviour (see also GENERATION). The search for independence, and the heightened sense of self-awareness and uncertainty about SELF, can also lead to psychological crisis and psychological disturbance. See also YOUTH UNEMPLOYMENT, DELINQUENCY.


Stage in the cycle of erosion following youth and preceding maturity.
The period of life from puberty to maturity.


novel of young love. [Am. Lit.: Booth Tarkington Seventeen in Magill I, 882]
References in periodicals archive ?
These data are important for school counselors and other school personnel because data from key informant reports often record frequency and severity of problem behaviors (Sladeczek, Elliot, Kratochwill, Robertson-Miaanes, & Stoiber, 2001).
For this reason, a pairwise functional analysis (Iwata, Duncan, Zarcone, Lerman, & Shore, 1994b) consisting of a demand condition and a control condition was used to confirm the hypothesis that Michael's problem behaviors were maintained by negative reinforcement.
These findings indicate that to prevent peer victimization among the highly vulnerable population of young children with disabilities, intervention efforts should specifically work to reduce children's problem behaviors and promote their receptive language skills.
Further research is needed to evaluate the use of background music to reduce problem behaviors for persons with visual impairments.
Many problem behaviors are common in parrots, including excessive vocalization, aggression, reproductive behaviors such as masturbation, and feather destruction.
Severe problem behavior among children with pervasive developmental disorders including autism is relatively prevalent (Horner, Carr, Strain, Todd & Reed, 2002) and costly both to the individual and society (Schroeder, Rojahn, & Oldenquist, 1989).
Teacher use of descriptive analysis data to implement interventions to decrease students' problem behaviors.
In general adolescent samples, robust correlations have been observed among a variety of problem behaviors (Barone et al.
Persons with profound and multiple disabilities may frequently fail to engage in constructive activity and, instead, may display high levels of problem behavior (e.
Fortunately, these types of disorders are only seen in a small minority of people with developmental disabilities, as are other serious problem behaviors like aggression and violence.
Adolescents' Problem Behaviors and Parent-Adolescent Conflicts in Hmong American Families: Introduction