The psychologist who was the first woman to earn a doctoral degree in psychology in the us and is renowned for writing a
comparative psychology book in which she described the cognitive processes in both humans and animals is
a martha bernal
b. margaret floy washburn
c. mamie clark
d. mary whiton calkins

The psychologist who was the first woman to earn a doctoral degree in psychology in the US is:

B. Margaret Floy Washburn.

Explanation:

Margaret Floy Washburn is an extremely well-known person for two reasons:

She was the first woman to receive a doctorate in psychology in 1894, due to the refusal of many universities until then to receive female students. His flagship book "The Animal Mind: A Textbook of Comparative Psychology" in which he does a very rigorous investigation into the senses and behavior of different animals in their natural environment, work that is said to have taken him around 8 years to complete and had many more in which he continued investigating after its first edition.

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