True or false: researchers currently believe that one major cause of schizophrenia is early childhood experiences with unresponsive parents.

TRUE - What causes childhood schizophrenia has NOT been established, However, it develops like that of the adult which comes up from  genetics and other environmental factors.

Explanation:

More studies have focused on the degree of care and control by the parents on their children. Children who interact more with their parents appear to have affectional bonds with them, which protects the children from psychiatric symptoms in their adulthood.  

Children who had neglectful relationships with their parents and experienced other forms of intrusive behaviors are also more likely to develop psychiatric issues.  

Poor parenting can also be as a result of the bad experiences the parents had in their down childhood, which are later transmitted to their children.  

probably 3 since archeologists and historians don’t understand there writing.