Possible Palliatives for the Paralyzing Pre/Post Paranoia that Plagues Some PEP’s
2006; Springer Science+Business Media; Volume: 3; Issue: 6 Linguagem: Inglês
10.56645/jmde.v3i6.41
ISSN1556-8180
Autores Tópico(s)Genetic Neurodegenerative Diseases
Resumo…gain scores are rarely useful, no matter how they may be adjusted or refined…investigators who ask questions regarding gain scores would ordinarily be better advised to frame their questions in other ways (Cronbach & Furby, 1970). Pre-post ParanoiaPre/post testing is anathema to many members of the psychology-education-psychometric (PEP) community.This irrational bias stems in part from the dour appraisal of pre/post testing by Cronbach & Furby (1970), echoed down though the literature to present day texts on assessment such as that by Suskie (2004b).In my opinion, the reticence to employ pre/post testing in evaluation, as used so successfully in physics education reform (Hake, 2005(Hake, , 2006a)), is one reason for the glacial progress of educational research (Lagemann, 2000) and reform (Bok, 2005) in higher education. Should We Measure Change? Yes!In a recent Carnegie Perspective, Lloyd Bond (2005), a senior scholar at the Carnegie Foundation, wrote:If one wished to know what knowledge or skill Johnny has acquired over the course of a semester, it would seem a straightforward matter to assess what Johnny knew at the beginning of the semester and reassess him with the same or equivalent instrument at the end of the semester.It may come as a surprise to many that measurement specialists have long advised against this eminently sensible idea.Psychometricians don't like "change" or "difference" scores in statistical analyses because, among other things, they tend to have lower reliability than the original measures themselves.Their objection to change scores is embodied in the very title of a famous paper by Cronbach and Furby "How we should measure "change,"-or should we?"As for the unreliability of "change scores," such charges by Lord (1956Lord ( , 1958) ) and Cronbach and Furby (1970) have been called into question by, for example, Rogosa, Brandt, and Zimowski
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