Aging, Practice, and Perceptual Tasks: A Diffusion Model Analysis.
Practice effects were examined in a masked letter discrimination task and a masked brightness discrimination task for college-age and 60- to 75-year-old subjects. The diffusion model (Ratcliff, 1978) was fit to the response time and accuracy data and used to extract estimates of components of proces...
| Published in: | Psychology & Aging Vol. 21; no. 2; pp. 353 - 372 |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Published: |
American Psychological Association
June 2006
|
| Subjects: | |
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=511294314&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 511294314 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 08827974 PYG jtl: Psychology & Aging issn: 08827974 maglogo: N pubinfo: dt: June 2006 vid: 21 iid: 2 pid: 34 pub: American Psychological Association artinfo: ui: 511294314 10.1037/0882-7974.21.2.353 ppf: 353 ppct: 19 formats: tig: atl: Aging, Practice, and Perceptual Tasks: A Diffusion Model Analysis. aug: au: Ratcliff, Roger Thapar, Anjali McKoon, Gail su: Choice (Psychology) Age differences Psychology Medical offices sug: subj: Choice (Psychology) Age differences Psychology Medical offices ab: Practice effects were examined in a masked letter discrimination task and a masked brightness discrimination task for college-age and 60- to 75-year-old subjects. The diffusion model (Ratcliff, 1978) was fit to the response time and accuracy data and used to extract estimates of components of processing from the data. Relative to young subjects, the older subjects began the experiments with slower and less accurate performance; however, across sessions their accuracy improved because the quality of the information on which their decisions were based improved, and this, along with reduced decision criteria, led to shorter response times. For the brightness, but not the letter, discrimination task, the older subjects' performance matched that of the younger group by the end of 4 sessions, except that their nondecision components of processing were slightly slower. These analyses illustrate how a well-specified model can provide a unified view of multiple aspects of data that are often interpreted separately. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
|---|