Constraints on Language Learning : behavioral and neurocognitive studies with adults and children

This thesis will contribute to a body of experimental work addressing the question of whether language learning plays a role in certain fundamental design properties of natural languages. Methodologically, this thesis seeks to extend the artificial language learning paradigm, investigating whether learners are sensitive to the constraints embodied by key properties of languages. For example, we will explore whether communicative pressure influences the final outcome of language learning, namely how the structures that are acquired by individuals are transmitted to downstream generations. We will also explore how basic language learning constraints operate in different age groups and, importantly, cross-linguistically. Next to the behavioral experiments focusing on learning and its outcomes, we will look at preliminary electrophysiological correlates of basic compositional processing in the early stages of learning a miniature artificial language using electroencephalography (EEG). In this general introduction I will briefly discuss some of the relevant concepts and methods which will be used in three studies that constitute this thesis

An exploration of minimal and maximal metrical feet

This thesis presents a principled theory of bounded recursive footing. Building on previous research on metrical stress, and couched within the framework of Prosodic Hierarchy Theory, I argue that the rehabilitation of recursive feet in phonological representations leads to an improvement of our theory of prosody. I investigate the major driving forces that may cause recursion at the foot level and demonstrate that reference to recursive and non-recursive feet in various related and unrelated languages (e.g. Wargamay, Yidiɲ, Chugach, English, Dutch, German, Gilbertese, Seneca, Ryukyuan, Tripura Bangla, Cayuvava) allows us to provide a unified account of a wide range of prosodically-conditioned phenomena which would otherwise remain unexplained. In particular, I demonstrate that the assignment of binary and ternary stress, certain tonal distributions, some puzzling cases of vowel lengthening, consonant fortition, vowel reduction and consonant weakening all clearly benefit from recursion-based analyses. In arguing for the need for recursive feet in phonological representations, I identify new strength relations in prosodic systems. Besides the well-established strength dichotomy between the head of a foot (i.e. the strong branch of a foot) and the dependent of a foot (i.e. its weak branch), I show that languages may distinguish between further metrical prominence positions. These additional required positions do not need to be stipulated as they come for free in a framework that allows recursion at the level of the foot