The aim of the diploma thesis is to give a partial characterization of speech of several age groups: ninth grade students, people aged 19-24 years, people aged 44-50 years and people aged 65 or more years and also draw a comparison between them in certain areas. The thesis contains the theoretical part, which focuses on simple functional communication style in general, non-verbal communication elements, symptoms suprasegmental speech marks and vocabulary range. The practical part is divided into two chapters. The first one describes necessities and areas of research. The second one provides a summary of speech specifics of individual age groups and mutual comparison of them. The practical part focuses on expression quality, ie., accuracy and linguistic correctness. It is also focused on the periphery of the vocabulary range.

My doctoral research addressed two questions regarding the influence of orthographic knowledge on speech processing. First, I attempted to identify the locus of the orthographic effects observed in spoken word recognition tasks in which the orthographic consistency and the congruency between the phonological and orthographic representations of the stimuli were manipulated. Several studies provided converging results suggesting that only phonological representations activated at lexical or postlexical processing levels are affected by orthographic knowledge, while those activated at prelexical levels are not. However, the lexical processing level is not the only factor that determines the occurrence and/or the size of the orthographic effects. Regardless of the processing level tapped by the task, the characteristics of the material and the way in which participants perform the tasks also play an important role. Second, I examined the generality of the orthographic effects both in the suprasegmental domain and in the operation of working memory. Overall, the results showed orthographic effects in both situations./La question de l’influence des connaissances orthographiques sur le traitement de la parole a été abordée sous différents angles à travers les études menées dans le cadre de ma thèse de doctorat. Plus précisément, le locus des effets orthographiques a été examiné dans des tâches de reconnaissance de la parole grâce à une manipulation de la consistance orthographique et de la congruence entre les représentations phonologique et orthographique des stimuli. Les résultats obtenus convergent pour indiquer que seules les représentations phonologiques activées dans les situations qui exigent un traitement lexical et/ou post-lexical sont affectées par les représentations orthographiques. Cependant, l’occurrence et/ou la magnitude des effets orthographiques obtenus semblent dépendre également des caractéristiques du matériel et de la manière dont les participants effectuent la tâche. La question de la généralité des effets orthographiques a aussi été abordée :les effets orthographiques ont été démontrés d’une part dans le domaine suprasegmental (sur le ton lexical) et, d’autre part, dans le fonctionnement de la mémoire de travail. / Doctorat en sciences psychologiques / info:eu-repo/semantics/nonPublished