Psychometric Theory Nunnally Pdf [repack] -

Jumc C. Nunnally’s is widely considered the "bible" of measurement in the social sciences. First published in 1967, it bridged the gap between abstract mathematical models and the practical needs of researchers trying to quantify human behavior, intelligence, and personality. The Foundation of Measurement

Before SPSS had a "Factor" button, Nunnally explained communality , eigenvalues , and rotation (orthogonal vs. oblique). His caution about of factors remains a lesson for modern data scientists. psychometric theory nunnally pdf