These estimates should preferably be in terms of internal-consistency or split-half reliability. We would be interested in obtaining reliability estimates for all subtests, i.e., Information, Comprehension, Arithmetic, Digit Span, Similarities, Vocabulary, Picture Arrangement, Picture Completion, Block Design, Object Assembly, and Digit Symbol, and for all IQ scores (verbal IQ, performance IQ, and full scale IQ).
Thanks to everybody who considers this question.
Please see several articles from my E-Library on this interesting subject. I wish you good luck.
What you really need is a copy of the WAIS-R Manual, because all of this information will be there. (If you are planning to use any of its subtests, you'd need a kit anyway.) What makes this difficult is that it's been twice superseded, so most users will long since have discarded their copies.
There are copies of the complete kit for sale on eBay, mostly at a reasonable price. Try the link below, but if it doesn't work, then just go to eBay and search for WAIS-R.
A few academic libraries still have their copies on the shelf, so you could request inter-library loan. According to my quick search, they include the University of Rhode Island, Rowan University, and the State University of New York at Brockport - along with a couple of dozen others, though none in Germany.
Worth noting: The Wechsler scales report split-half rather than Cronbach's alpha for most subtests, because they are constructed more like Guttman Scales, with easy items at the beginning & hard ones at the end, but alpha assumes roughly equivalent item difficulty. Digit Symbol only uses test-retest because the individual items are all so easy.
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313.TR1.TRC0.A0.H0.XWAIS-R.TRS0&_nkw=WAIS-R&_sacat=0
To supplement the WAIS-R manual the following may be useful:
Ryan, J. J., Prifitera, A., & Cummins, S. (1982). Reliability of the WAIS-R with a mixed patient sample. Perceptual and Motor Skills, 55, 1277-1278.
Ryan, J. J., Paolo, A. M., & Brungardt, T. M. (1992). WAIS-R reliability and standard errors for persons 75 years and older. Journal of Psychoeducational Assessment, 8, 9-14.
If you are interested, I have also published of WAIS-R scoring reliability and test-retest stability.
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