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Views on having 
 are changing in the USA. New research shows that 25 per cent of 
 do not want to have children. A 
 of American adults are 
 being "child-free". They are 
 without children. Psychologists Jennifer Watling Neal and Zachary Neal did 
 on why child-free people might be 
. They wanted to find out what the 
 were between child-free people and "non-parents". They said non-parents include "not-yet-parents" (
 planning to have kids) and people who cannot have children because of 
 problems.