People and their talents what they know, what they learn, and what they do with it are the ultimate foundations of organizational performance. Intellectual capital is the collective brainpower or shared knowledge of a workforce than can be used to create value (intellectual capital = competency x. A knowledge worker is someone whose mind is a critical asset to employers and adds to the intellectual capital of the organization. Workforce diversity is the composition of a workforce in terms of differences among people whether it be their gender, age, race, ethnicity, religion, sexual orientation or able-bodiedness. Prejudice, or the holding of negative opinions and attitudes to a diversified population, sets the stage for diversity bias. A subtle form of discrimination is called the glass ceiling effect an invisible barrier or ceiling that prevents minorities from rising above a certain level of organizational responsibility.