This happens to girls around ages 12-13 when they have achieved at least 17% body fat.
What is menarche or first menstrual period?
100
Teens require more of these energy sources than at any other time in their lives.
What are calories?
100
Some would argue that this is the most pervasive character trait in 10-15 year olds.
What is egocentrism?
100
These individuals are sometimes criticized for being overly concerned with the affective needs of their students.
What are middle grade teachers?
100
Displaying extremes of emotions over a relatively short period of time, teens are know for this trait.
What is moodiness?
200
Boys typically experience a growth spurt during these years.
What is 12 to 14 years of age?
200
Young teens need to be more concerned with cleanliness because these glands become more active than they were in childhood.
What are sweat glands?
200
This belief causes adolescents to think that everyone's attention is centered on them.
What is the imaginary audience?
200
Page and Page used the image of a 3-sided "social mirror" to describe the development of this.
What is self-esteem?
200
Because they feel a sense of crisis, adolescents often react with what adults would term this type of reaction to common events.
What is a disproportionate response?
300
Adolescents may notice this phenomenon during the awkward stage of rapid, asynchronous growth.
What is regression in fine motor skills?
300
Most adolescents are deficient in this nutrient which is essential for healthy bone development.
What is calcium?
300
This aspect of egocentrism causes young teens to believe that their feelings and experiences are totally new and unique; and that no one could possibly understand what they are going through.
What is the personal fable?
300
Adolescents consistently identify this domain as most valuable to their self-esteem.
What is physical appearance?
300
This emotional trait of young adolescents prompts the smart parent to rent the violin rather than buying it when his young teen daughter asks to join the orchestra.
What is fickleness?
400
This makes adolescents more prone to fractures.
What is rapid bone growth?
400
As many as 25% of young teens may suffer from this vision problem as a result of body growth.
What is myopia or near-sightedness?
400
Erickson's and Marcia's research highlights this importance of the formation of this in adolescence.
What is personal identity?
400
These two areas are least influential in teen self-esteem.
What are academic competence and good behavior.
400
Teens often have powerful devotions to social causes because of their heightened sense of this.
What is justice?
500
During adolescence three bones in the spine fuse together to form this adult body part.
What is the coccyx or tailbone?
500
These relationships help teens to sort out the traits and characteristics they value in a potential mate.
What are romantic partnerships or boyfriend/girlfriend relationships?
500
This stage of Marcia's identity formation, which allows the exploration of many possible roles without a strong commitment to any of them, is a healthy stage for middle grade students.
What is identity moratorium?
500
Beane and Lipka note that self-esteem seeks this, even if it is negative.
What is stability?
500
This need causes the young teen to spend many solitary hours locked in her room.