TY  - JOUR
PY  - 2007//
TI  - Age-Related Increase in Top-Down Activation of Visual Features
JO  - Quarterly journal of experimental psychology (2006)
A1  - Madden, David J.
A1  - Spaniol, Julia
A1  - Bucur, Barbara
A1  - Whiting, Wythe L.
SP  - 644
EP  - 651
VL  - 60
IS  - 5
N2  - Previous research suggests that, during visual search and discrimination tasks, older adults place greater emphasis than younger adults on top-down attention. This experiment investigated the relative contribution of target activation and distractor inhibition to this age difference. Younger and older adults performed a singleton discrimination task in which either an E or an R target (colour singleton) was present among distractor letters. Relative to a baseline condition in which the colours of the targets and distractors remained constant, an age-related slowing of performance was evident when either the colour of the target or that of the distractors varied across trials. The age-related slowing was more pronounced in response to target colour variation, suggesting that older adults place relatively greater emphasis on the top-down activation of target features.<p />
LA  - 
SN  - 1747-0218
UR  - http://dx.doi.org/10.1080/17470210601154347
ID  - ref1
ER  -