Who was the first african american to receive a phd in psychology in the united states? noam chomsky francis cecil sumner carl rogers naomi weisstein

It was Francis Cecil Sumner.

Explanation:

He´s called the "Father of Black Psychology" for having received the first Ph.D. in psychology for an African America. After serving in the Army in WWI, he enrolled in the doctoral program of Lincoln University. His thesis topic was "Psychoanalysis of Freud and Alder."

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.

the three roles stated in the dialogue develop the siblings' personalities.

lloyd's personality looks like a trademarketer

dana's personality is afraid from lloyd's behavior and the oldest sister is a decided person who tries to solve any conflict