Well-developed response and sharing of your perceptions on the three major concepts of Lewins Theory and the nursing metaparadigms. I appreciate how this theory is relevant to your practice in caring for the elderly. About this comment I need to answer this question about of Lewins theory and nursing metaparadigms. Please use sources no later than 5 years, at least 2. As you think about theories, differentiate grand theories from middle-range nursing theories and their impact on the practice of nursing ?