For over a century, IQ defined intelligence, followed by EQ which added an emotional dimension. However, the unpredictable and fluid modern world necessitates a new metric: AQ (Agility Quotient), which is the ability to handle change, uncertainty, and the unknown. According to executive coach Liz Tran, who works with founders and CEOs, AQ is becoming a crucial skill, particularly in how individuals react when plans fall apart, rules change, and a clear path is absent.

In her new book "AQ: A New Kind of Intelligence for a World That’s Always Changing," Tran identifies four primary types of AQ. It's important to note that while an individual may not fit squarely into one category, they may have a strong tendency toward one type. This classification helps in understanding how people operate under various levels of uncertainty and change, ultimately aiding in personal and professional development in a rapidly evolving environment.

The article emphasizes that in a world where adaptability and resilience are vital for success, developing an Agility Quotient could be as significant as traditional intelligence measures and emotional intelligence. Recognizing one's AQ type allows individuals to leverage their strengths and work on their weaknesses, fostering a more dynamic approach to challenges in both business and everyday life.