A review was undertaken which (A) divided the major learning theories currently adhered to into three approaches: 1. behaviorism, 2. neo-behaviorism, and 3. cognitivism; (B) summarized the central constructs of eight prominent learning theories; (C) delineated the explicit implications of each learning model for instruction and compared the theories along several dimensions; (D) presented an integrated discussion of the learning theories focusing on the instances in which these formulations are in agreement and disagreement; (E) reviewed three technologies of instruction: 1. Harvey, Hunt, and Schroder's conceptual systems approach, 2. Miller's process model, and 3. Dubin's updating model, and discussed their relevancy to instructional approaches to adult learning; (F) suggested topics for future investigation by adult education researchers.