Traditions of statistical significance testing in second language (L2) quantitative research are strongly entrenched in how researchers design studies, select analyses, and interpret results. However, statistical significance tests using "p" values are commonly misinterpreted by researchers, reviewers, readers, and others, leading to…

Studies of second language acquisition often employ analytical concepts defined relative to the target language. This practice can be a serious obstacle to investigation of crucial questions about the nature of the learners' languages. This comparative fallacy's drawbacks are illustrated through a framework designed to study interlanguage…

Four positions concerning foreign and second language learning ability in adults are summarized with attention to the "critical period" hypothesis. An argument is made for a shift from macro-correlational studies to controlled micro language learning research free of extralinguistic variables. (PMJ)

Explores the validity of Labov's (1969) "Observer Paradox," and the five axioms describing the problems involved in linguistic research, for interlanguage research. Methodological remedies are suggested. (AM)

Discusses the shortcomings of the morpheme order approach in first and second language acquisition research, and proposes instead the notion of developmental sequence, drawing on examples from data on four German children learning English naturalistically. (Author/AM)