How long can an adult learner typically listen with understanding?

An adult learner can typically maintain effective listening with understanding for about 90 minutes. This timeframe aligns with the generally accepted attention span for adult learners, which suggests that they can engage actively in learning and comprehending information for this duration before their ability to focus begins to decline. After about 90 minutes, the likelihood of losing attention or needing a break increases, as cognitive overload can occur. This understanding is important for instructors in planning lessons and structuring their teaching methods to optimize learning and retention among adult learners, ensuring that the material is presented in a way that keeps them engaged and encourages active participation.