Herman J. Adèr

Hermanus Johannes "Herman J." Adèr (born May 20, 1940 ) is a Dutch statistician/methodologist and consultant at the , the VU University Medical Center and the University of Stavanger, known for work on Methodological Modelling and Social Research Methodology.

Biography Born in Amsterdam, Adèr received his BA in psychology and social science methods, and his MA in numerical mathematics, both from the University of Amsterdam mid-1960s. Later in 1995 there he also received his PhD with a thesis entitled "Methodological knowledge : notation and implementation in expert systems."

After some years teaching mathematics, he returned to the academia in 1971, where he was faculty member at the Faculty of Psychology of the Vrije Universiteit. In 1993, he moved to the VU University Medical Center, where he was associate professor at the Department of Clinical Epidemiology and Biostatistics until 2005. 1995. Methodological knowledge : notation and implementation in expert systems. Thesis University of Amsterdam. 1999. Research Methodology in the Social, Behavioural and Life Sciences. Herman J. Adèr and Gideon J. Mellenbergh (Eds.) London: Sage. 2003. RM 2003 : proceedings of the second workshop on research methodology, June 25–27, 2003, VU University, Amsterdam. Herman J. Adèr and Gideon J. Mellenbergh (Eds.) 2008 Advising on Research Methods: A consultant's companion. Herman J. Adèr, Gideon J. Mellenbergh with contributions by David J. Hand. Huizen, The Netherlands: van Kessel. p. 244.

Articles, a selection: Flier, H. van der, Mellenbergh, G.J., Ader, H.J. & Wijn, M. (1984) "The iterative item bias selection method." Journal of Educational Measurement, 21, 131–145. Barkhof, Frederik, et al. "Comparison of MRI criteria at first presentation to predict conversion to clinically definite multiple sclerosis." Brain 120.11 (1997): 2059–2069. Geerlings, M. I., Jonker, C., Bouter, L. M., Adèr, H. J., & Schmand, B. (1999). Association between memory complaints and incident Alzheimer's disease in elderly people with normal baseline cognition. American Journal of Psychiatry, 156(4), 531–537. Bleiker, E., Pouwer, F., van der Ploeg, H. M., Leer, J. W. H., & Adèr, H. J. (2000). Psychological distress two years after diagnosis of breast cancer: frequency and prediction. Patient Education and Counseling, 40(3), 209–217.