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The 28:1 Grant/Sackman legend is misleading, or: How large is interpersonal variation really?

Prechelt, Lutz

How long do different programmers take to solve the same task?
In 1967, Grant and Sackman published their now famous number of
interpersonal performance differences, which is both incorrect
This report presents the analysis of a much larger dataset of
engineering work time data with respect to the
same question. It corrects the false 28:1 value, proposes more
metrics, presents the results for the larger dataset,
and presents results of several further analyses:
distribution shapes, effect sizes,
and the performance of various significance tests.

Zugehörige Institution(en) am KIT Institut für Programmstrukturen und Datenorganisation (IPD)
Publikationstyp Forschungsbericht
Jahr 1999
Sprache Englisch
Identifikator ISSN: 1432-7864
URN: urn:nbn:de:swb:90-AAA726992
KITopen ID: 72699
Verlag Karlsruhe
Serie Interner Bericht. Fakultät für Informatik, Universität Karlsruhe ; 1999,18
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