[Rasch] Not a Fan of Lexiles?
Mike Linacre (RMT)
rmt at rasch.org
Wed Oct 31 08:56:14 EST 2007
The statement "could have been achieved using conventional
deterministic/actuarial score algorithms" is true of many Rasch-based
So why haven't those achievements been made prior to Rasch?
Because the philosophical basis inherent in Rasch is missing from earlier
thinking. Rasch is not merely a statistical technique. It is a way of
conceptualizing the problem to be solved and the approach to be used to
The geometry of Archimedes is a great analogy. He solved using geometry
(and genius), problems which we would now solve using algebra. Geometry is
like raw score theory. Algebra is like Rasch. But there never was a "raw
Editor, Rasch Measurement Transactions
rmt at rasch.org www.rasch.org/rmt/ Latest RMT: 21:1 Summer 2007
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Rasch