The Less-Is-More hypothesis was proposed to explain age-of-acquisition effects in first language (L1) and second language (L2) learning. We scrutinize different renditions of the hypothesis by examining how learning outcomes are affected by (a) limited cognitive capacity, (b) reduced interference resulting from less prior knowledge, and (c)…

Second language (L2) learning outcomes may depend on the structure of the input and learners' cognitive abilities. This study tested whether less predictable input might facilitate learning and generalization of L2 morphology while evaluating contributions of statistical learning ability, nonverbal intelligence, phonological short-term memory, and…

This study explores how learners generalize grammatical categories such as noun gender. Adult native English speakers with no prior knowledge of Russian (N = 47, ages 17-55 years) were trained to categorize Russian masculine and feminine diminutive nouns according to gender. The training set was morphophonologically homogeneous due to similarities…

This study explored learning and generalization of parts of the Russian case-marking paradigm, an inflecting-fusional system in which affixes simultaneously mark several grammatical features (case, gender, number, animacy). In Experiment 1, adult English speakers (N = 43) were exposed to nouns with transparent gender marking in the nominative case…

To examine the effect of diminutives on gender learning, adult native speakers of English were taught Russian nouns. Half the participants trained on diminutive nouns and half on nondiminutive baseforms. Over four sessions, participants learned to use adjectives that had to agree in gender with nouns. The diminutive training group demonstrated…

This study investigated second-language (L2) learning to gain a better understanding of learning mechanisms that also operate in child first-language L1 learners. The research was inspired by research on the beneficial effects of child-directed speech CDS. We tried to examine whether such benefits can be observed in the domain of inflectional…