Final answer:
Sigmund Freud's work in psychology focused on unconscious drives and early experiences.
Step-by-step explanation:
The work in psychology that focused on unconscious drives and early experiences was done by Sigmund Freud. Freud was an influential figure in the field of psychology and developed psychoanalytic theory, which emphasized the role of the unconscious mind and early childhood experiences in shaping behavior and personality. He used methods like dream analysis and free association to access the unconscious and understand the underlying motivations of individuals.