Answer:
NEUROTICISM.
Step-by-step explanation:
The traits which disappear in the later life is NEUROTICISM.
Neuroticism is one of the Big five traits of human personality.
A person who has more Neuroticism in them this means that the person is moody means he is more likely to experience feeling such as Depression, anger, Anxiety, Lonely, etc.
A person who has high neuroticism have more chance to suffer from a mental disorder.
When age increases the traits of neuroticism decreases.