Categorization (restructuring) and automatization: Two separable factors.
Walter Schneider, Richard M. Shiffrin · Psychological Review · 1985
Cheng (1985) presented a hypothesis concerning categorization that was supposed to provide an alternative to the automatization hypothesis of Schneider and Shiffrin (1977; Shiffrin & Schneider, 1977). In fact, we carried out in 1977 several critical studies showing that the categorization hypothesis was correct, but also showing conclusively that it and several related hypotheses were insufficient to explain a number of key findings. Although Cheng's review either did not discuss or inappropriately discounted the evidence, the 1977 articles and more recent ones provide a definitive demonstration of automatization.