There is growing interest in the role that morphological knowledge plays in literacy acquisition. but there is no research directly comparing the efficacy of different forms of morphological instruction. Here we compare two methods of teaching English morphology in the context of a memory experiment when words were organized by affix during study (e. g. https://www.kingarte.com/product-category/food-servicecommercial-kitchen-equipmentcooking-equipmentcommercial-cooking-equipment-parts/