Normalisation of Psychometric Tests
For internal use only ...
Normalized scores for the Mini Mental State Examination (MMSE)
lb <- library(help="NormPsy", character.only=TRUE) descr <- packageD...
Plot of predicted scores in the natural scale of the psychometric test
Prediction of MMSE scores in their natural scale.
Functions for normalizing psychometric test scores. The normalization aims at correcting the metrological properties of the psychometric tests such as the ceiling and floor effects and the curvilinearity (unequal interval scaling). Functions to compute and plot predictions in the natural scale of the psychometric test from the estimates of a linear mixed model estimated on the normalized scores are also provided. See Philipps et al (2014) <doi:10.1159/000365637> for details.