Combining statistics: The effects of phonotactics on cross-situational word learning
Regularities in speech can both help listeners make sense of their noisy world and support word learning. Two types of regularities that influence word learning are word-object co-occurrences and phonotactic probabilities. Here we conduct an exploratory investigation of the effects of phonotactics on word learning in ambiguous contexts. Brazilian-Portuguese speaking adults (N = 62) participated. Using a cross-situational word learning paradigm, we conducted two experiments in which sets of words with different phonotactic probabilities were presented in parallel, during the same learning opportunity, or sequentially, split across two learning opportunities. We found no effect of phonotactics on word learning in the first experiment, but we found a facilitative effect for the words with the highest phonotactics in the second experiment. Our results suggest that phonotactics and co-occurrence statistics can be combined to aid word learning, but only when learning opportunities highlight PP differences.