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Titolo:
GENUINE POWER CURVES IN FORGETTING - A QUANTITATIVE-ANALYSIS OF INDIVIDUAL SUBJECT FORGETTING FUNCTIONS
Autore:
WIXTED JT; EBBESEN EB;
Indirizzi:
UNIV CALIF SAN DIEGO,DEPT PSYCHOL LA JOLLA CA 92093
Titolo Testata:
Memory & cognition
fascicolo: 5, volume: 25, anno: 1997,
pagine: 731 - 739
SICI:
0090-502X(1997)25:5<731:GPCIF->2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
LONG-TERM MEMORY; FREE-RECALL; RETENTION; DYNAMICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
J.T. Wixted e E.B. Ebbesen, "GENUINE POWER CURVES IN FORGETTING - A QUANTITATIVE-ANALYSIS OF INDIVIDUAL SUBJECT FORGETTING FUNCTIONS", Memory & cognition, 25(5), 1997, pp. 731-739

Abstract

Wixted and Ebbesen (1991) showed that forgetting functions produced by a variety of procedures are often well described by the power function, at(-b), where a and b are free parameters. However, all of their analyses were based on data arithmetically averaged over subjects. R. B. Anderson and Tweney (1997) argue that the power law of forgetting may be an artifact of arithmetically averaging individual subject forgetting functions that are truly exponential in form and that geometric averaging would avoid this potential problem. We agree that researchersshould always be cognizant of the possibility of averaging artifacts,but we also show that our conclusions about the form of forgetting remain unchanged (and goodness-of-fit statistics are scarcely affected by) whether arithmetic or geometric averaging is used. In addition, an analysis of individual subject forgetting functions shows that they, too, are described much better by a power function than by an exponential.

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Documento generato il 21/09/20 alle ore 06:39:06