Presents a model to predict readability of documents encountered by older adults. Finds a correlation of 0.54 between the readability scores for test items predicted by the model and the percentage of older adults correctly answering those items. Finds that more difficult test items were correlated more highly with fluid intelligence abilities,…

This article discusses how text variables interact with reader, strategy, and task variables to affect readability, including text coherence, text organization, signaling, and text structure. It considers how classic readability formulas, in concert with consideration of text, text reader, and strategy variables, can be used to match texts to…