New research from Penn Nursing’s Center for Health Outcomes and Policy Research (CHOPR) – recently published online in the journal Research in Nursing & Health – has successfully validated a new, streamlined version of the Practice Environment Scale of the Nursing Work Index (PES-NWI), originally authored in 2002 by Eileen T. Lake, PhD, RN, FAAN, Professor of Nursing, the Edith Clemmer Steinbright Professor in Gerontology, and Associate Director of CHOPR, who is also lead author on this publication.