Development generally occurs from birth until death while growth only occurs in the first 20 years, although they are related they are independent of each other (Harvey & Park 2015c ). Developmental theories used in nursing are important for assessment, reassurance for certain behaviors and to provide further planning and intervention if there is a delay (Harvey & Park 2015c). Developmental theories created by Erikson and Piaget can be used for assessment (Lewis & Foley 2014). Lewis and Foley (2014) discuss how nurses should gain assessment knowledge and skills for developmental stages to enable accurate assessment and appropriate interventions or training. An example of development impacting health care is a child whose mother believes there is a delay and seeks medical advice. By assessing a patient's developmental level, the nurse will be able to determine the stage of life the patient has reached and whether surgery is necessary.