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FIRST REPORT OF FINDINGS
In the earliest version of this study, Holder (1992) concluded that:
(1) The term "handedness" lacks a precise descriptive standard.
(2) There is currently neither a means by which to empirically determine categories and/or degrees of "handedness".
(3) Without a standard definition to qualify hand preference, and an empirically-based means to quantify hand preference, questionnaire design and analysis is based on generally accepted assumptions and theoretical hypotheses.
(4) Seemingly innocuous aspects of questionnaire design, administration, and analyses (both singly and in concert) are capable of skewing a dataset in a predictable direction.
(5) The condition exists whereby the "distribution" of a dataset may be partially predetermined, prior to testing, by the type of questionnaire, scoring systems and analysis chosen.
(6) A reassessment of the use of the term "handedness" as a trait, and how it is best quantified, is called for.
Holder (1999) proposes a new approach for future research into hand preference and lateralization.
T h a n k s a g a i n t o t h e t h o u s a n d s w h o p a r t i c i p a t e d
M.K. Holder, Ph.D.
Handedness Research Institute, Indiana University, USA
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