Every design decision
is backed by research.
Invest with Prudie is not just a course. Every structural choice, from the order of concepts to the way feedback is delivered, is grounded in peer-reviewed learning science. Below are the six principles that shape how every lesson is built.
Anchored Instruction
Every concept is introduced through a concrete real-world scenario before the abstraction is named. The Cognition and Technology Group at Vanderbilt documented that this approach consistently produces deeper comprehension and better transfer to new problems than definition-first instruction.
CTGV, 1990 · Bransford et al., 2000Cognitive Load Theory
Working memory holds roughly four items at once (Cowan, 2001). Each screen in Invest with Prudie presents exactly one idea. Presenting a hook, cards, quiz, and simulator simultaneously would cause cognitive overload and eliminate retention. Every step is isolated to its own screen.
Sweller, 1988 · Cowan, 2001Spaced Repetition
Without active retrieval, 70% of new information is lost within 24 hours (Ebbinghaus, 1885). Every lesson's second quiz question reaches back to a prior lesson, forcing retrieval at expanding intervals. This is the mechanism behind all durable long-term memory formation.
Ebbinghaus, 1885 · Roediger and Karpicke, 2006The Generation Effect
Struggling to produce an answer encodes memory significantly deeper than passive reading (Slamecka and Graf, 1978). Card fronts in Invest with Prudie never show the concept name. The friction of deducing the answer from the problem is the entire point.
Slamecka and Graf, 1978 · Bjork, 1994High-Value Corrective Feedback
Generic "incorrect" responses create zero new neural pathways. Each wrong-answer option in Invest with Prudie has its own targeted feedback that validates the reasoning behind the mistake, isolates the structural flaw, and redirects to the correct mental model.
Hattie and Timperley, 2007Emotion as Memory Anchor
The amygdala prioritizes emotionally significant events for long-term storage. Information wrapped in mild surprise, tension, or awe is recalled 2 to 3 times better than neutral data. Prudie's moments of revelation are engineered memory anchors placed at the peak of each lesson.
Cahill and McGaugh, 1998Want to see how these principles translate into the structure of the course itself? Read about the five-layer progression on The Method page.