ADULTHOOD 
Moreover, adult sexual dysfunctions, and neuroses cause this failure. Psychological development 
in adults is based on resolving early conflicts among young people without fear. This brings an 
understanding that reasoning and thinking needs focus on psychological development. 
         Adults fail in fully carrying out disjunctive reasoning unless they are told it is necessary. 
This failure is caused by a rule that engaging brain is only when everything else fails. If 
information given is difficult, adults do not think about it. On the other hand, an easiest one that 
is wrong is the one they proceed in making inferences. This is cognitive miser characteristic 
whereby they have a tendency of not looking at the information that is not stated but the one that 
can be inferred. The reason why disjunctive reasoning does not take place is that cognitive 
processing quickly takes place.  
         Human beings are intelligent and smart in thinking. However, they think they are smart by 
not dwelling on the past making them screwed because emotion trajectory in age goes high 
hence their goals of striving in future become less relevant. Moreover, their thinking that they are 
smart in being inattentive because they feel what bothers them is disturbing screws them too, as 
they will be emotionally upset in turn believing that they are unreasonable. 
         In my opinion, adulthood is divided in three stages i.e. early, middle, and final one. 
Thinking failures can occur in all stages, some in early stages, and others on final one only. Most 
of their failures are caused by aging as some lose memory, lack concentration, disjunctive 
reasoning and, attentiveness, become mindlessness, not resolving conflicts well and egocentrism. 
Although human beings thinking may be smart, factors may fade it especially in adults and this 
screws them. Consequences from these failures may affect younger adults or children or even 
fellow older adults. Moreover, some conditions may rise such as dementia but not in all adults.