The Impact of Breaks on Forgetting When Perfornling ...

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ח d up to 70 perce. ח ts for a single day break a. ח poi break length, perforrnance time before the break. ח as a proper forgetting model to depict the relationsrip.
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The Impact of Breaks on Forgetting When Perfornling A Repetitive Task SHLOMO GLOBERSON Cullege of 8usiness Administration \ Northeastern University (Visi[(ng ) Graduate School of Busi ‫ח‬ess Admi ‫ ז‬istrat;on Tel Aviv U ‫ ח‬iversity

NISSAN LEVIN

I

Graduate School of Business Admirjistration Tel Aviv Univcrsity

A VRAHAM SHTUB Department

‫ז‬el

of lndustrial Engi ~ Aviv University

ring

Abstract: Commonly

used leaming curve models assume that a repetitive task is performed continuously, disre gardi ‫ ח‬g the existe ‫ ח‬ce of possible bre ; k periods between co ‫ח‬secutive repetitions. Since these breaks generate for getti ‫ ח‬g, actual perfo ‫ ח‬ance will be inferior [0 the perforrnance forecasted by typical learni ‫ ח‬g curve rnodels . This paper desc,ibes and a ‫ ח‬alyzes a laboratory ex.perime ‫ ח‬t dcsigned [0 investigate the nature of forgetting in a worki ‫ ח‬g enviro ‫ ח‬rne ‫ ח‬t. The resu!ts of the experirne ‫ ח‬t indicate t at the degree of forgetting is a function of the break length a ‫ ח‬d the level of experience gained prior (0 the break. The study investigated the irnpact of breaks within a ra ‫ ח‬ge of one to eighty two days. The perfo r na ‫ ח‬ce deterioration due to the break.s v,.·asjust a few percentage poi ‫ ח‬ts for a single day break a ‫ ח‬d up to 70 perce ‫ ח‬tage points for the longest breaks. A power cu[\'e was identified as a proper forgetting model to depict the relationsrip and the degree of forgetting . .

betwee ‫ ח‬break length,

• For more thtained in this study (IF = 0.65) shows that there is still a signif icant potentia1 for forgetting and that the present impact of f‫ ס‬rgetti ‫ ח‬g is onJy 41 % of its m a imum value. Recovery from forgetting is a1s‫ ס‬of great importance . ‫ז‬he slower it is the . more importa ‫ ח‬t it is (0 reduce the break le ‫ח‬gth. Theref ‫ ס‬re , it is ‫ ח‬ot sufficient just to identify the forgetting intensity ; one should also re1ate to the cumulative time 10st due t‫ ס‬the break. This time is_prop

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