Final answer:
Abraham Maslow, a humanistic psychologist, believed that people were motivated by perfectionism and the achievement of their fullest potential.
Step-by-step explanation:
Abraham Maslow, a humanistic psychologist, believed that people were motivated by perfectionism. Maslow proposed a hierarchy of human needs in which the highest-level need is self-actualization, the achievement of our fullest potential. He found that self-actualized individuals share characteristics such as being open, creative, loving, and accepting of themselves.