Traditional methods for task analysis have been largely based on the Instructional Systems Development (ISD) model, which is widely used throughout industry and the military. The first part of this document gives an overview of cognitive task analysis, which is conducted within the first phase of ISD. The following steps of cognitive task analysis are outlined: (1) identification of key job tasks and training issues; (2) visual representation of the knowledge structure; (3) description of cognitive processes underlying performance; (4) identification of differences between experts and less-experienced personnel; and (5) implications of results for the design phase. Following this overview, the paper presents, in outline form, guidelines that describe the procedures and deliverables for a cognitive task analysis. The deliverables (research proposal, interim report, and final report) are described, and the information contained in them is outlined. Guidelines for conducting a cognitive task analysis are presented in the following steps: establishing analytic goals, selecting subjects, selecting data collection methods, analyzing data, validating results, communicating and interpreting results, and formulating training recommendations. Attachments include two figures that provide examples of network scaling and an example of an expert mental model. (YLB)