Boys Puberty - ANSWER Start of Puberty: Usually begins between ages 9.5 and 13.5.
Growth Spurt: age 12.5
Spermarche (First Ejaculation): Begins around the age of 13
End of Puberty: 18 years old on average.
Girls Puberty - ANSWER Start of Puberty: Typically begins between ages 8 and 13.
Growth Spurt: starts age 10
Menarche (First Menstruation): age 12.5
End of Puberty: 16 years old on average.
Summarize the domino effect and its role in puberty. - ANSWER The hypothalamus is a
regulatory center in the brain and it sends GnRH to the pituitary gland, triggered by achiev-
ing a certain threshold of body fat. The pituitary gland released gonadotropins (FSH and LH)
which trigger the production of sperm and ovarian follicles, along with sex hormones being
released into the bloodstream. These sex hormones lead to the development of secondary
sex characteristics like pubic hair growth, breast growth, etc.
Late-Maturing Girls - ANSWER have not been identified for being at risk for major prob-
lems, although these individuals may feel annoyed at being behind their peers regarding sex-
ual development. The poor outcomes are by no means inevitable.
Early-Maturing Boys - ANSWER typically receive positive attention for being the tallest
and strongest in their class. This positive attention is often from both girls and other boys,
who may look up to early maturing boys who have a natural advantage in sports and other
activities.
1
, Late-Maturing Boys - ANSWER may be at-risk for problem behaviors if their appearance
and behavior, paired with an unsympathetic and bullying school situation, results in their be-
ing rejected by their peers. The poor outcomes are by no means inevitable.
Profile of people with anorexia nervosa - ANSWER are more likely to come from middle-
to upper-class families that are highly controlling, common for it to run in the family.
are more likely to be very perfectionistic and tightly controlling of their own behaviors.
may come from a culture or part of society where there is a high emphasis on being thin.
may also have low levels of key neurotransmitters.
Profile of people with bulimia nervosa - ANSWER may also run in families. However,
these individuals are more likely to be impulsive and engage in other reckless behaviors. Re-
search has found connections between bulimia and depressive disorders, indicating a possi-
ble biochemical problem.
Eating disorders - ANSWER In summary, a variety of social, genetic, neurochemical, and
personality variables play a role in eating disorders. However, younger and more perfection-
istic individuals are more likely to develop anorexia, while older and more impulsive individ-
uals are more likely to develop bulimia.
People with the purging subtype of anorexia will still be concerned about obesity and would
be underweight. Those components are not part of bulimia.
Early Maturing Girls - ANSWER Girls who begin to mature before age 10 my experience
delinquency, negative body image, eating Disorder, substance abuse and early sexual behav-
ior.
Boys who begin to mature before age 12 may experience popularity with girls, popularity
among male peers & athletic success. May also be more prone to risk behavior, starting to
do more activities before they are ready.
Girl who mature later in life may have a more boyish figure and suffer from body image
problems. Even feeling left out from their peers.
Boys who mature later may be at risk for some social and behavioral problems if these physi-
cal attributes contribute to them being rejected by their peers.
2
Growth Spurt: age 12.5
Spermarche (First Ejaculation): Begins around the age of 13
End of Puberty: 18 years old on average.
Girls Puberty - ANSWER Start of Puberty: Typically begins between ages 8 and 13.
Growth Spurt: starts age 10
Menarche (First Menstruation): age 12.5
End of Puberty: 16 years old on average.
Summarize the domino effect and its role in puberty. - ANSWER The hypothalamus is a
regulatory center in the brain and it sends GnRH to the pituitary gland, triggered by achiev-
ing a certain threshold of body fat. The pituitary gland released gonadotropins (FSH and LH)
which trigger the production of sperm and ovarian follicles, along with sex hormones being
released into the bloodstream. These sex hormones lead to the development of secondary
sex characteristics like pubic hair growth, breast growth, etc.
Late-Maturing Girls - ANSWER have not been identified for being at risk for major prob-
lems, although these individuals may feel annoyed at being behind their peers regarding sex-
ual development. The poor outcomes are by no means inevitable.
Early-Maturing Boys - ANSWER typically receive positive attention for being the tallest
and strongest in their class. This positive attention is often from both girls and other boys,
who may look up to early maturing boys who have a natural advantage in sports and other
activities.
1
, Late-Maturing Boys - ANSWER may be at-risk for problem behaviors if their appearance
and behavior, paired with an unsympathetic and bullying school situation, results in their be-
ing rejected by their peers. The poor outcomes are by no means inevitable.
Profile of people with anorexia nervosa - ANSWER are more likely to come from middle-
to upper-class families that are highly controlling, common for it to run in the family.
are more likely to be very perfectionistic and tightly controlling of their own behaviors.
may come from a culture or part of society where there is a high emphasis on being thin.
may also have low levels of key neurotransmitters.
Profile of people with bulimia nervosa - ANSWER may also run in families. However,
these individuals are more likely to be impulsive and engage in other reckless behaviors. Re-
search has found connections between bulimia and depressive disorders, indicating a possi-
ble biochemical problem.
Eating disorders - ANSWER In summary, a variety of social, genetic, neurochemical, and
personality variables play a role in eating disorders. However, younger and more perfection-
istic individuals are more likely to develop anorexia, while older and more impulsive individ-
uals are more likely to develop bulimia.
People with the purging subtype of anorexia will still be concerned about obesity and would
be underweight. Those components are not part of bulimia.
Early Maturing Girls - ANSWER Girls who begin to mature before age 10 my experience
delinquency, negative body image, eating Disorder, substance abuse and early sexual behav-
ior.
Boys who begin to mature before age 12 may experience popularity with girls, popularity
among male peers & athletic success. May also be more prone to risk behavior, starting to
do more activities before they are ready.
Girl who mature later in life may have a more boyish figure and suffer from body image
problems. Even feeling left out from their peers.
Boys who mature later may be at risk for some social and behavioral problems if these physi-
cal attributes contribute to them being rejected by their peers.
2
