Teenagers have incomplete cognitive and thinking ability yet, so they tend to feel distressed and frustrated more easily than adults even about not so serious

 matters. Teenagers’ psychological difficulties are often taken lightly just for going through “adolescence” since they are viewed as getting rebellious or irritated

 without sufficient legitimacy.

Females’ depression is the disorder of memory of emotions. Males do not store emotions in memory, so males’ depression is neurotic depression, which is more

 related with perception than with memory. The depression caused by stored and retrieved emotions applies only to females.

Teenage girls’ having depression indicates that they have developed problems of memory of emotions. In females’ depression, wounds, or negative feelings, that

 have been accumulated in memory cause imbalance in psychological operation by blocking the retrieval of wounds. Females’ depression is a type of safety

 device that prevents further expansion of wounds.

Teenage girls may take things that do not accord with their thought standards as negative feelings and store them as psychological wounds in memory. 

For example, when a teenage girl wants to become a violinist but she studies to become a doctor following her parents’ wish, both quitting playing the violin and

 studying to become a doctor cause her to accumulate wounds continuously in spite of herself.

Females’ unconscious attempts to treat wounds one by one every time wounds are retrieved from memory, but when many accumulated wounds are retrieved

 at one time, the unconscious decides to just seal the wounds since it cannot treat them effectively, which is manifested as females’ depression.