Gottlob Lawrence R
University of Kentucky, Lexington, 40506-0044, USA.
Psychol Aging. 2006 Sep;21(3):526-34. doi: 10.1037/0882-7974.21.3.526.
The ability of young and older adults to engage in guided conjunction search was tested in 2 experiments. In the cued condition, a picture of the target was presented before the search. In the noncued condition, there was no picture of the target. In Experiment 1, the cue was presented for 200 ms; the magnitude of the cuing effect (noncued response time--cued response time) was greater for the young than for the older observers. In Experiment 2 (older observers only), the cue duration was doubled, and older observers had a larger magnitude of cuing effect than found in Experiment 1 but not as large as what would be expected under generalized slowing. The results indicated that older observers had difficulty with interpreting the cue and setting search parameters when the target varied across trials.
在两项实验中测试了年轻人和年长者进行引导式联合搜索的能力。在提示条件下，搜索前会呈现目标的图片。在无提示条件下，则没有目标图片。在实验1中，提示呈现200毫秒；年轻人的提示效应大小（无提示反应时间 - 有提示反应时间）比年长者更大。在实验2中（仅年长者），提示持续时间翻倍，年长者的提示效应大小比实验1中更大，但不如广义减速理论预期的那么大。结果表明，当年目标在不同试验中变化时，年长者在解释提示和设置搜索参数方面存在困难。
