Wilhelm Wundt is recognized as the founder of modern psychology. The establishment of the first psychology laboratory in Leipzig, Germany, in 1879 by Wundt, solidified psychology's status as an independent scientific field, distinct from philosophy. His primary contribution lies in structuralism, which involved the study of the mind's structure via introspection.
Although Sigmund Freud (A) significantly impacts psychology, particularly through psychoanalysis, Wundt's foundational role in formalizing psychology as a science remains unmatched. John B. Watson (C), a pioneer of behaviorism, and Carl Rogers (D), a key figure in humanistic psychology, do not hold the same distinction as the "father of modern psychology."