Calvin Schnure, NAREIT senior vice president for research and economic analysis, spoke at the National Multifamily Housing Council’s Annual Research Forum to present results of a new study on the determinants of demand for senior housing.The study found that the senior housing sector has grown considerably over the past generation and offers an increasing diversity of choice for seniors. The move to senior housing has become, for many older Americans, a choice of lifestyle, rather than a move based on need for medical or nursing care.