Model-free estimation of a psychometric function

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


Reference manual

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1.1-1 by Kamila Zychaluk, 9 years ago,,

Browse source code at

Authors: Ivan Marin-Franch <[email protected]> , Kamila Zychaluk <[email protected]> , and David H. Foster <[email protected]>

Documentation:   PDF Manual  

Task views: Psychometric Models and Methods

GPL (>= 2) license

Depends on PolynomF, SparseM, stats, utils, base

See at CRAN