Factors influencing singleton search and cognitive intervention with older adults

West, Melanie (2017). Factors influencing singleton search and cognitive intervention with older adults. University of Birmingham. Ph.D.

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Abstract

The current thesis aimed to investigate visual attention in relation to the effects of stored knowledge and ageing, as well as the contribution of top-down and bottom-up processes in visual search. A first set of experiments focused on ‘singleton search’. The performance of younger adults was compared to older adults. Results of these experiments revealed evidence that the presence of a singleton distractor can sometimes facilitate search as reported by Geng & DiQuattro (2010). Apparent differences between the groups were found to be attributable to the ageing process. In the second set of experiments examined the impact of stored knowledge and colour associations on search. Results of these experiments indicated an impact of stored knowledge. Again, apparent differences between the groups on these 2 experiments were found to be attributable to the ageing process. Finally I carried out a cognitive intervention aimed at improving attention and working memory in older adults, and compared the performance of an intervention group to a control group. Results demonstrated that this computerised attention training programme (CPAT) can improve cognitive functions which otherwise decline with age. The implications of these findings are discussed, and suggestions made for future research.

Type of Work:

Thesis (Doctorates > Ph.D.)

Award Type:

Doctorates > Ph.D.

Supervisor(s):