[Rasch] Paper by D Lawley

David D Curtis david.curtis at flinders.edu.au
Wed May 6 10:24:51 EST 2009

Rasch colleagues,

I would like to locate a paper by D Lawley published in the early 1940s. It was
in this paper that he recognised the (b-d) parameter as a requirement for
measurement and that it must be normally distributed.
Does anyone have a reference for this paper - or even a copy?


David D Curtis

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