Answer :
Adolescent adults are particularly at risk for psychiatric disorders. In any given year, more than 40% of her 18- to 29-year-olds in the United States meet criteria for mental illness.
The two factors are identity, instability, etc.
This is a higher percentage than any other adult age group. The most common disorders are anxiety (22.3%), substance use (22.0%) and mood disorders (22.0%).
Five traits that mark the new adulthood: quest for identity, instability, self-centeredness, a sense of being between adolescence and adulthood, and a sense of great potential for the future.
Emerging adulthood is concentrated in developed countries, where most young people have completed tertiary education and the median age of marriage and parenthood is about 30 years.
There are differences in the emergence of adulthood within industrialized countries. It lasted the longest in Europe, and in developed Asia, the self-centered freedom of adolescent adulthood is balanced by parental responsibility and a conservative view of sexuality.
Adulthood exists only in the elite middle class, but is expected to increase in the 21st century as these countries become more prosperous.
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