Lewis Terman

Intelligence Quotient (IQ): A measure of a person's intellectual capabilities, often calculated using standardized tests. It's like your academic report card but for your cognitive abilities.

Longitudinal Study: A research design that involves repeated observations of the same variables over long periods. Imagine taking a photo of a tree every day for several years to observe how it changes over time.

Giftedness: Refers to an intellectual ability significantly higher than average. It's like having a superpower in the realm of thinking and learning.