The Ebbinghaus Forgetting Curve shows how information is lost over time when there is no effort to retain it. Active recall sessions dramatically slow the forgetting process, creating what cognitive scientists call the "spacing effect." Students using Ace Quiz AI retain approximately 70% of information after 30 days, compared to only 20% with traditional methods—a 50 percentage point improvement.

Traditional Study Methods: Passive reading (information quickly fades), highlighting & notes (creates illusion of learning), last-minute cramming (short-term gains but rapid forgetting), and generic study guides (ignores individual knowledge gaps). These methods typically result in only 20% memory retention after 30 days.

Ace Quiz Method: Active recall (strengthens neural pathways), spaced repetition (optimizes review intervals), personalized quizzes (targets individual knowledge gaps), and performance tracking (guides metacognitive awareness). These methods result in 70% memory retention after 30 days.

Multiple scientific studies support the effectiveness of active recall and spaced repetition. Karpicke & Roediger (2008) found testing led to 56% higher retention after one week. Cepeda et al. (2008) showed optimal spacing increased retention by 35-50%. McDaniel et al. (2011) demonstrated repeated quizzing vs. study resulted in 28% higher scores on final assessment.

Ace Quiz AI's algorithm incorporates findings from these studies by optimizing question timing, customizing difficulty based on performance, and focusing on areas where you've previously struggled. The 30% improvement in retention is a conservative estimate based on this combined research.