TY - JOUR
T1 - On the discrimination between global and local trend hypotheses of life-span changes in processing speed
AU - Molenaar, P. C.M.
AU - van der Molen, M. W.
N1 - Funding Information:
This work was supported by NW0 grant 560-263-093.W e thank Ted Bashore for editorial suggestions, and Joel Myerson and an anonymous reviewer for helpful comments on an earlier version of the article.
PY - 1994/8
Y1 - 1994/8
N2 - Meta-analyses of age effects on processing speed suggest a single, global mechanism underlying developmental speeding and slowing in the erderly. Myerson, Hale, Wagstaff, Poon and Smith (1990) proposed an information loss model assuming that a constant amount of information is lost at each processing step in all age groups whereas the rate of information loss differs between age groups. In this study, a series of simulations has been conducted comparing global versus local information loss. This has been done for both deterministic and stochastic varieties of the information loss model. The outcomes of these comparisons were consistently negative; the information loss model fails to discriminate between global and local age effects on the reaction process. The simulations were followed by a discussion of Hohle's (1967) scheme for investigating selective age effects on processing speed. It was concluded that the combined approach of stage and distribution analysis of the reaction process augmented with psychophysiological time markers provides a powerful tool for the study of life-span changes in processing speed.
AB - Meta-analyses of age effects on processing speed suggest a single, global mechanism underlying developmental speeding and slowing in the erderly. Myerson, Hale, Wagstaff, Poon and Smith (1990) proposed an information loss model assuming that a constant amount of information is lost at each processing step in all age groups whereas the rate of information loss differs between age groups. In this study, a series of simulations has been conducted comparing global versus local information loss. This has been done for both deterministic and stochastic varieties of the information loss model. The outcomes of these comparisons were consistently negative; the information loss model fails to discriminate between global and local age effects on the reaction process. The simulations were followed by a discussion of Hohle's (1967) scheme for investigating selective age effects on processing speed. It was concluded that the combined approach of stage and distribution analysis of the reaction process augmented with psychophysiological time markers provides a powerful tool for the study of life-span changes in processing speed.
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U2 - 10.1016/0001-6918(94)90005-1
DO - 10.1016/0001-6918(94)90005-1
M3 - Article
C2 - 7976469
AN - SCOPUS:0028487465
VL - 86
SP - 273
EP - 293
JO - Acta Psychologica
JF - Acta Psychologica
SN - 0001-6918
IS - 2-3
ER -