Effects of Word Imageability on the Acquisition of Grammatical Morphology in Czech Children

(in English): In many studies there was demonstrated that word's imageability - the ability of a word to produce a mental image of it's referent - affects the processing of its inflection (e.g. Prado - Ullman, 2009), its acquisition (e.g. McDonough et al., 2011) and the acquisition of grammatical morphemes (Smolík, in press). This thesis builds on the Smolík's paper, and its goal is to test whether the imageability of a word's stem influences the acquisition of its inflections in Czech children. Word imageability ratings and ratings of other variables that were assumed to affect the process of the acquisition of word inflections, were collected, then questionnaires were distributed to parents to examine how the forms of chosen words are acquired by children. The focus was on the acquisition of nominative plural of nouns, present tense in second person and past tense of verbs. The results show that the imageability significantly predicts the age of acquisition of the nominative in singular and all observed forms of verbs. The absence of the imegability effect on the acquisition of nominative in plural may be due to the overall high imageability and thus reduced variability of ratings in nouns in our dataset. Two possible explanations of the imageability effect on the acqusition of morphological..