This document discusses various theories and principles related to learning and human resource development (HRD). It covers topics like the basic definition of learning, principles of association and their influence on learning. It also discusses Gestalt theory of learning through insight. Further, it talks about limits of learning principles in training design, impact of instructional and cognitive psychology on HRD, and ways to maximize learning through trainee characteristics, training design, and transfer of training. The document also covers individual differences in learning rates and interactions between attributes and treatments. It concludes with discussing Gagne's theory of instruction.