Sixteen Divergent-Production Abilities at the Ninth-Grade Level
J. P. Guilford, Ralph Hoepfner · Multivariate Behavioral Research · 1966
A battery of 57 specially constructed and marker tests was administered to 206 ninth-grade students. Sixteen divergent production abilities were predicted, along with 7 other reference factors in the structure of intellect. Principal components analysis was followed by orthogonal rotation according to Cliff's least squares procedure for approximating a target matrix. The 16 divergent-production factors and the 7 reference factors were clearly identified.