This document discusses learning definitions, elements, and factors. It defines learning as a cognitive process that results in improved performance over time through adaptation. Key elements of learning include it being cognitive, leading to changes through performance, and resulting in relatively permanent changes to cognition. Adult learners are different in that they have life experience, purpose for learning, spend their own resources, want focus, and value social aspects. The learning process involves inputs like resources and trainers, internal processes like acquisition and retention, and outputs like skills and knowledge. Factors that affect learning are individual variables, task/learning variables, and environmental variables. Instructional events aim to facilitate the internal learning process.