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Theses, dissertations and research publications (including journal articles, conference abstracts and books) from Lund University are collected in this database. Where possible, the option to download a full text document is available. It is also possible to search for Lund University student theses in the student theses database.
|Title||Age effects on semantic coherence: Latent semantic analysis applied to letter fluency data|
|Author/s||Petter Marklund, Sverker Sikström, Ramus Bååth|
Department of Psychology
|Full-text||Available as PDF|
|Alternative location (URL)||http://dx.doi.org/10.1109/SEMA... Restricted Access (Alternative Location)|
|Pages||73 - 76|
|Conference name||SEMAPRO 09. The Third International Conference on Advances in Semantic Processing|
|Abstract||We investigated age-related changes in the semantic distance between successively generated words in two letter fluency tasks differing with respect to demands placed on executive control. The semantic distance was measured by Latent Semantic Analysis (LSA). The results show that older people have a larger semantic distance between successively generated items than young people, and that this effect is particularly pronounced in the more demanding fluency task. Taken together, our findings support the idea that elderly have a less distinct semantic network compared to young people while also demonstrating the feasibility of LSA as a powerful tool for delineating multifaceted aspects of semantic organization inherent in behavioural data from language production tasks.|
|Keywords||cogni- tive aging, latent semantic ananlysis, semantic coherence, letter fluency.|
Swedish Research Council
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