Concept learning is challenging in part because the meanings of many concepts depend on their relationships to other concepts. Learning these concepts in isolation can be difficult, but we present a model that discovers entire systems of related concepts. These systems can be viewed as simple theories that specify the concepts that exist in a…

Theories of number concepts often suppose that the natural numbers are acquired as children learn to count and as they draw an induction based on their interpretation of the first few count words. In a bold critique of this general approach, Rips, Asmuth, Bloomfield [Rips, L., Asmuth, J. & Bloomfield, A. (2006). Giving the boot to the bootstrap:…

Children aged 6 to l7 were taught novel class inclusion hierarchies, analogous to the relation among oaks, pines, and trees. The results indicated that the part-whole structure of collections is simpler to establish and maintain than the structure of inclusion. (Author/RL)

Demonstrates that connectionist models described in "Rethinking Innateness" (Elman, et al., 1996) depend on innately assumed representations and do not offer a genuine alternative to nativism. Presents simulation results showing that the models are incapable of deriving genuine abstract representations that are not presupposed. Maintains…

College students learned implicitly the underlying structure of an artificial language by memorizing a set of representative examples. The form and structure of their knowledge was evaluated and analyzed by: (1) solving anagrams; (2) determining well-formedness of novel letter strings; and (3) providing detailed introspective reports. (Author/MV)

Presents the goals of the Plunkett and Marchman (PM) connectionist model of the acquisition of verb morphology, and responds to related criticisms. Claims that small vocabulary size allows young children to correctly produce both regular and irregular past tense forms, and that non-linearities in vocabulary growth are a contributing factor to the…