An examination of factor structure of Rod-and-frame Test and Embedded-figures Test.

Abstract

The scores of 93 male students on Rod-and-frame Test (RFT), Embedded-figures Test (EFT) and on 3 reference tests for each of 4 intellectual factors were correlated and factor analyzed. The hypothesis that 2 of J. P. Guilford's factors, Convergent Production of Figural Transformations and Cognition of Figural Systems, would explain the performance in RFT, whereas figural transformations alone would explain performance in EFT was rejected (p < 0.000). Instead, RFT defined a separate factor and EFT also loaded figural systems. RFT and EFT had quite different factor patterns and shared only 4 to 16% common variance.