Book excerpt: "Research on Processing Instruction has so far investigated its primary effects. This book presents the results of a series of experimental studies investigating possible secondary and cumulative effects of Processing Instruction on the acquisition of French, Italian and English as a second language. The results of the three experiments have demonstrated that Processing Instruction not only provides learners with the primary benefit of learning to process and produce the morphological form on which they received instruction, but also a secondary benefit in that they transferred that training to processing and producing another morphological form on which they had received no instruction."--BOOK JACKET.