Answer:
Nobody would have any new ideas meaning we would be stuck in a never ending cycle of the same thing as everyones brain is the same so if one person came up with something everyone else would too.
I think it is reduced ability
1) stress response
2) attachment
3) hierarchy
4) self esteem
5) stress
6) emotions
7) friendship
8) depression
9) anger
10) aggression
11) grief
12) cope
