Investigation of fourth-, sixth-, and eighth-graders' knowledge of derivational morphology and the relationship between that knowledge and their ability to spell derived words, found that, while there was a strong developmental trend in both the mastery of derivational morphology and the spelling of derived words, spelling performances lagged…

A total of 196 Latino bilingual students in grades 4, 6, and 8 were asked to give the Spanish equivalent for English words, some of which had derivational and inflectional suffixes. The results indicated that the students' ability to translate cognates increased with age above and beyond any increase in their vocabulary knowledge in Spanish and…