Grouping morphologically complex words in the mental lexicon: evidence from Russian verbs and nouns

Frequency is known to play a crucial role in lexical access. The notions primarily discussed in the literature are form frequency, (whole) word frequency and morpheme frequency, e.g. root frequency. In numerous studies (Alegre & Gordon, 1999; Baayen & al. 2007, a.m.o.), these characteristics were manipulated to find out whether various word forms are decomposed during lexical access or are stored and can be accessed as a whole. Similar issues arise when we turn from inflection to derivation, at least with semantically transparent derivates (Niswander-Klement & Pollatsek, 2006; Taft 2004, a.m.o.).