File:Forgetting curve from preschoolers SuperMemo collection.jpg

Figure: A forgetting curve from a preschooler's SuperMemo collection. The absence of forgetting indicates the absence of intentional declarative learning. The decay constant is nearly zero which makes optimum interval meaningless. 1706 repetition cases have been recorded. This flat forgetting curve would go unnoticed in older versions of SuperMemo due to the adult-centric assumption that on Day=0, retrievability is 100%. Overtime, this forgetting curve will lean down to produce a graph typical of adult learning. This process may take a few years and should not be artificially accelerated, e.g. by means of coercion. This curve is a hypothetical expression of the semantic brain