Conference on human intelligence

The ISIR conference in Melbourne, Australia, December 12-14, 2013 was a most inspiring experience with great oral presentations and posters about many different aspects of human intelligence. The conference program with abstracts can be found here: http://www.isironline.org/meeting/.

My special interest in latent variable measurement models was satisfied mostly by a private talk with Dr. Gilles E. Gignac (http://drgillesgignac.blogspot.com.au/), who emphasises the importance of the bifactor model.

The importance of this model, also for clinical practice, is beautifully demonstrated in his and Dr. Watkins’ thought provoking new paper: Bifactor Modeling and the Estimation of Model-Based Reliability in the WAIS-IV  (see link below). The low reliability of the WAIS-IV indexes independent of g (e.g. after the g-variance is partialled out), will probably come as a surprise to many of my collegues, who often rely heavily on interpretation of index profiles and even on subtest profiles.

https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxkcmdpbGxlc2dpZ25hY3B1YmxpY2