Employees who come from traditionally underrepresented groups often face a dilemma at work. Do they celebrate and share their cultural, ethnic, racial, gender and other differences? Or do they try to conceal them to create greater social harmony? Wharton management professor Rachel Arnett studies the role that identity plays in cultivating workplace inclusion and how it contributes to professional advancement. She spoke to Knowledge at Wharton about why managers and employees must get beyond an abstract notion of diversity if they want to effect real change. An edited transcript of the conversation follows. Knowledge at Wharton: What is the focus of your research? Rachel Arnett: My work looks at how individuals in diverse work environments and settings cultivate inclusion by expressing and concealing social identity differences. I have a few different areas of work in this space.…