Lexical Retrieval in healthy older and younger adults: Examining age-related effects on language production in context
Through our research we are exploring how age affects lexical retrieval during speech. Previous research has typically focussed on single word retrieval. However, language production is rarely limited to individual words and is usually produced in sentences or as part of dialogues, and is influenced by the semantic information available in the context.
Our project is underpinned by three key aims. Firstly, to examine how age affects lexical retrieval during language production in context (i.e., connected speech) versus isolation (i.e., individual words). Secondly, we are investigating how semantic cues available from the context hinder or facilitate lexical retrieval in older versus younger adults, and how potential effects might be related to semantic control and domain-general control. Finally, employing the use of fMRI, we are studying the neural mechanisms underlying age-effects on lexical retrieval.
Bilingualism and Language Control lab (PI: Dr. Angela de Bruin)