Memorability functions as an indicator of qualitative age differences in text recall.

An analysis in which the probability of text unit recall for older adults [p(Re/O)] is plotted as a function of this probability for the young [p(Re/Y)] is considered as one way to assess whether there are qualitative differences in text recall for young and old. The application of this relative memorability analysis to previously reported data dealing with the immediate recall of spoken sentences (Stine, Wingfield, & Poon, 1986) revealed that although older adults show qualitative recall similar to younger adults when informational density is low, they show less discrimination among text elements when informational density is increased.