Position: Postdoctoral Research Fellow Office: 501, Main Building, Birkbeck College Malet Street, London WC1E 7HX Phone: - Fax: - Email: h.purser@bbk.ac.uk

My current focus is on the development of analogy and metaphor comprehension in typical children and children with developmental disorders. Although, at first glance, this research area might appear quite abstracted, in fact, it is really just a way of getting at the development of "understanding one thing in terms of another". What is this process of understanding (a comparison, a transformation)? Do people with developmental disorders develop in similar ways to typical children? What can this tell us about development more generally?

Previously, I completed my PhD at the University of Bristol with Chris Jarrold, on short-term memory in individuals with Down syndrome. This work was a progressive programme of ruling out possible explanations for the robust finding that individuals with Down syndrome tend to have a marked impairment of verbal short-term memory.

Generally, I am interested in whether individuals with developmental disorders use different strategies from typically-developing children to afford good task performance, particularly in tasks that are used for matching and regression purposes. Other areas of interest include the degree of independence of verbal short-term memory and language (both comprehension and production), and what exactly it is that verbal and visuospatial short-term memory have in common. I organise a reading group on the philosophy of science and psychology (by amateurs for amateurs) and am increasingly interested in what philosophers and psychologists can do for each other (there seem to be a lot of misunderstandings on both sides).

Most generally of all I'm interested in identifying the stats and inference framework that will help us to know when we're wrong and move on.

Publications

Purser, H. R. M. & Jarrold, C. (2005). Impaired verbal short-term memory in Down syndrome reflects a capacity limitation rather than atypically rapid forgetting. Journal of Experimental Child Psychology, 91, 1-23.

Jarrold, C., Purser, H.R.M., & Brock, J. (2006). Short-term memory in Down syndrome. In T. P. Alloway & S. Gathercole (Eds.) Working memory and neurodevelopmental conditions. Hove, UK: Psychology Press.

Purser, H. R. M. & Jarrold, C. (under revision). Do Phonological and Semantic Storage Both Contribute to Short-term Memory Performance? Evidence From Short-term Recognition. Quarterly Journal of Experimental Psychology.

Purser, H. R. M. & Jarrold, C. (submitted). Does the Corsi task measure visual or spatial short-term memory? Evidence from Down syndrome. Developmental Medicine & Child Neurology.

Purser, H. R. M. & Jarrold, C. (submitted). Poor phonemic discrimination does not underlie poor verbal short-term memory in Down syndrome. Journal of Experimental Child Psychology.

Thomas, M. S. C., Van Duuren, M., Purser, H. R. M., Mareschal, D., Ansari, D., & Karmiloff-Smith, A. (under revision). The development of metaphorical language comprehension in typical development and in Williams syndrome. Language Learning and Development.

Purser, H. R. M., Thomas, M. S. C., & Mareschal, D. (under revision). The development of similarity: Testing the prediction of a computational model of metaphor comprehension. Language and Cognitive Processes.

Links

Dr. Chris Jarrold