Self-esteem increases throughout adult life, peaking at around retirement age but declining thereafter. Health and income are significant factors
in the maintenance of self-esteem.
Research from Ohio State University has challenged the common perception that girls tend to internalize their problems, becoming depressed or anxious, while boys externalize, committing violence against people or property.
In another study, young people with pre-existing relationship difficulties were found to be more
likely to develop anxiety and depression than the other way round, this being particularly the case when entering
adulthood.
Characteristic and sometimes severe symptoms of autism such as
repetitive motions, problems interacting with others and impaired communication can improve with age.
An innovative study evaluated young children's
storytelling ability and found that they are able to immerse themselves in the thoughts and feelings of fictional
characters.
Pointing out that loneliness is not the same
as solitude which can be highly valued they nevertheless conclude that social isolation and physical aging may have a
deleterious effect on health.
New research suggests that early
adolescents who prefer evening to morning activities are more likely to exhibit antisocial behavior. Previous studies
focusing on older adolescents showed a similar link with psychological problems.
Excessive discussion about problems with friends (co-rumination) may have a negative impact on emotional
adjustment in girls who are more likely than boys of the same age to develop anxiety and depression as a result.
Adolescents who engaged in violent behavior relatively regularly throughout their teenage years or who began in their mid teens and increased
with time were significantly more likely to perpetrate domestic violence in their mid 20s.