PUB555 Now you see it now you dont.pdf (96.29 kB)
Now you see it, now you don’t
conference contribution
posted on 2009-05-12, 13:19 authored by Edward Elton, Colette NicolleThis paper details a study that was conducted to determine the effect physical
context of use, e.g. daily lighting levels and contrast, has on perception. The study
was undertaken to further develop inclusive design analytical tools that assess the
characteristics of a product against the capabilities of users. A total of four lighting
levels were tested (equivalent to street lighting, in-house lighting, optimum and
daylight), and four contrast levels (90%, 50%, 25% and 10% contrast). A random
proportionate sample of adults aged 65 years and older was drawn from the
population (N = 38, age range 65-87 years, mean age 74). The experiment revealed
daily lighting levels to have a noticeable affect on visual acuity. Results showed that
by increasing the lighting level from street lighting to optimum, there was an increase
of up to 44% in the number of participants able to correctly read particular rows of
letters. In 73% of cases the number of people able to correctly read each letter size
decreased when its contrast was reduced. With certain letter sizes up to 50% more
people were able to read letters at 90% compared to 10% contrast. Future work is
being planned to see how these results relate to the general population and everyday
products.
History
School
- Design
Citation
ELTON, E. and NICOLLE, C.A., 2009. Now you see it, now you don't. INCLUDE 2009, International Conference on Inclusive Design, Royal College of Art, London, UK, 5-8 AprilPublisher
The Helen Hamlyn Research Centre / IncludePublication date
2009Notes
This conference paper was presented at Include 2009, please visit http://www.hhc.rca.ac.uk/1345/all/1/include_2009_.aspx for more details.Language
- en