He and his wife are known to conduct experiments to study the child's behavior towards race using puppets. It is the experience of "Clark Doll", and its idea to bring children of black color, and put two dolls, one white and the other black in front of them and ask specific questions on children and in the following order:
Q1- What is your favorite doll or one that you like to play with?
Q2 - What is the nice or beautiful doll?
Q3 What is the doll that looks evil?
Q4 - What doll looks like a white child?
Q5 - What doll looks like a colored child?
Q6 - What doll looks like a Negro child?
Q7 What doll like you?
The result, after questioning the children, showed that most of them had chosen the black doll as the evil puppet in the third question, and the white doll as beautiful. This experience helped convince the US Supreme Court that the race and color discrimination in America against the law was one of the early steps to cancel Racism in general, especially in the 1960s, according to one website, although racism has been abolished, black-skinned people still think they are less beautiful.
In 2006, Kerry Davis repeated the same experience. And you get the same results.
