The ISD model, sometimes alternatively called Instructional Systems Development Model, consists of five phases, usually described as analysis, objectives, design, delivery and evaluation. This training model is a systematic approach to managing human capital. The phases interrelate and form a continuous cycle. Analysis
Analysis, also called needs assessment, is about pinpointing the gap between the present situation and what the situation ought to be. There is no perfect way to do needs analysis. It depends on the circumstances and the resources and whether the performance barriers appear to evolve from behavioral, environmental, organizational or external regulatory sources. Needs assessment is often a validation of what is already known and helps to get support for the proposed training.
Experienced trainers enter the ISD cycle at the needs analysis phase, starting with the design of an instrument (needs assessment tool) to collect and interpret data concerning performance--at the individual, group or organizational