Accroding to Knowles andragogical model, the author summarizes the key elements of andragogy as follows: The characteristics of learners are : a rich resource for learning, readiness to learn, self-directiveness, autonomy and motive to learn. The characteristics of educators are : facilitator, promoter, and participator. The design elements of andragogical model are: establishing a climate conducive to learning, creating mutual planning, diagnosing needs for learning, formulating objectives, designing a pattern of learning experience, and evaluating the learning outcomes. According to Houle's(1980) suggestion, there are fourteen essential characteristics of professionalization which are appropriate content for continuing professional education. Houle's insights into continuing professional education are considered in nursing field as guideline of the concept and content of continuing professional education. By applying the andragogical model, practitioner may make practice effective and efficient.
