Work supported by a grant from the U.S. Office of Education to the University of Hawaii. (RS)

This meta-analysis pools data from 25 years of research on the order of acquisition of English grammatical morphemes by students of English as a second language (ESL). Some researchers have posited a "natural" order of acquisition common to all ESL learners, but no single cause has been shown for this phenomenon. Our study investigated…

Contrastive analysis a priori predicts facts of possible errors in learning a second language that contrastive analysis a posteriori cannot explain. In a study of relative clause formation, the latter approach shows that students have no trouble, whereas the former approach shows the task to be so difficult that they avoid it. (AG)

Results of a diagnostic test revealed that Thai students have no more trouble in learning English prepositions than others learning English as a second language; all the groups had difficulty. Error analysis was found to be just as effective in explaining mistakes as contrastive analysis. (AG)