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Experimental Aging Research
An International Journal Devoted to the Scientific Study of the Aging Process
Volume 24, 1998 - Issue 1
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Original Articles

Why Do Picture Naming Latencies Increase With Age: General Slowing, Greater Sensitivity to Interference, or Task-Specific Deficits?

Pages 21-51 | Published online: 11 Nov 2010
 

Abstract

To test different hypotheses about age-related slowing ofword and picture naming, response latencies of young and older adults were compared in 2 experiments using the same 4 tasks: picture naming, written word pronunciation, and picture and word categorization. In each case, the target word or picture was presented with a distractor word that had to be ignored. Analyses showed the expected main effects of age, modality, and interference conditions but no consistent interaction between age and other factors. More particularly, agerelated slowing was similar in word and picture processing and interference was proportional to overall speed of responding. Thus, no support was found for the hypotheses assuming either declining inhibitory mechanisms or taskspecific deficits in older adults. These results were discussed in relation to characteristics of the experimental tasks.

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