Eysenck Personality Questionnaire, EPQ-R
Online version of the Eysenck Personality Questionnaire (latest revison, 1985), both full and short forms: EPQ-R and EPQ-RS. Developed by Hans Eysenck and Sybil Eysenck with Paul Barrett.
Personality and Ind. Diff., 1985. 6/1
In view of certain psychometric deficiencies of the original Psychoticism scale, an attempt was made to improve the scale by adding new items. It was attempted to increase the internal reliability of the scale, improve the shape of the distribution and increase the mean and variance score. Two different studies are discussed. Reliabilities are now somewhat improved, distributions are closer to normal and mean scores are higher than on the old scale. Four new short 12-item scales for the measurement of P, E, N and L are also given.