A generation gap or generational gap is a difference of opinions between one generation and another regarding beliefs, politics, or values. In today's usage, generation gap often refers to a perceived gap between younger people and their parents or grandparents KEY TAKEAWAYS A generation gap is defined as the different thoughts and worldviews held by different generational cohorts. The generation gap between individuals can be used to explain differences in the worldviews and actions observed among those of different age groups. The current living generations are the Greatest Generation, the silent generation, baby boomers, Generation X, millennials, and Generation Z. Businesses often aim to understand the different characteristics of each generation to better create and market their products and services. Employers seek to reduce the generational gap within the workplace by employing a variety of techniques.