IN THIS ARTICLE THE AUTHOR GIVES AN OVERVIEW OF DEVELOPMENTS IN THE FIELD OF PSYCHOLINGUISTICS DURING THE PERIOD FOLLOWING THE PUBLICATION OF VOLUME 34, NUMBER 2 OF "REVIEW OF EDUCATIONAL RESEARCH" IN APRIL 1964. DISCUSSED ARE (1) LEARNING AND NATIVISTIC THEORIES OF LANGUAGE ACQUISITION, (2) EMPIRICAL FINDINGS IN DEVELOPMENTAL PSYCHOLINGUISTICS, (3) LANGUAGE THEORY AND LANGUAGE BEHAVIOR, AND (4) THE PSYCHOLOGY OF LANGUAGE AND SCHOOL LEARNING. APPENDED IS A BIBLIOGRAPHY OF WORKS CITED. THIS ARTICLE APPEARED IN "REVIEW OF EDUCATIONAL RESEARCH," VOLUME 37, NUMBER 2, APRIL 1967. (DO)