Model-free estimation of a psychometric function CRAN Task View: Psychometrics (http://CRAN.R-project.org/view=Psychometrics) Local linear estimation of psychometric functions. Provides functions for nonparametric estimation of a psychometric function and for estimation of a derived threshold and slope, and their standard deviations and confidence intervals Software Depends: R (>= 2.8.1), PolynomF (>= 0.93), SparseM (>= 0.79), stats, utils, base Kamila Zychaluk <kamila.zychaluk@liverpool.ac.uk>, David H. Foster <d.h.foster@manchester.ac.uk>, Ivan Marin-Franch <imarinfr@indiana.edu> Ivan Marin-Franch <imarinfr@indiana.edu>, Kamila Zychaluk <kamila.zychaluk@liverpool.ac.uk>, and David H. Foster <d.h.foster@manchester.ac.uk> GPL (>= 2) 2012-04-15 application/tgz http://CRAN.R-project.org/package=modelfree