Identify potential barriers in face to face communication at home

Apsychologist has developed a series of personality inventories and wants to determine if they are valid. one of the scales measures perfectionism, so he asks a colleague for advice on how to establish the validity of this scale. the colleague tells him that if he were to find a sample of people with personality disorder, these people would obtain high scores on a scale that measures perfectionism.

What was the atlanta race riot of 1906 ?

Give one important factor responsible for production of poverty in in kerala