Final answer:
Martha E. Rogers is the nurse theorist who developed the Science of Unitary Human Beings. This theory is centered on the interaction and evolution of humans and their environment as a unified whole, distinguishing it from psychological theories like those of Carl Rogers, which focus on self-concept and personal development.
Step-by-step explanation:
The nurse theorist who developed the Science of Unitary Human Beings is Martha E. Rogers. Her theory emphasizes the interaction between humans and their environments and views individuals as inseparable from their environment, positing that both evolve together as a single unit.
Other theorists mentioned, such as Carl Rogers, made significant contributions to the field of psychology, particularly in humanistic psychology. Carl Rogers's work on self-concept, involving the ideal self and the real self, aligns closely with personal development rather than the Science of Unitary Human Beings advocated by Martha E. Rogers in nursing theory.