Abstract: | The 1976 edition of the Metropolitan Readiness Tests was factor analyzed from the responses of 408 beginning first graders. A single General Readiness factor, consistent with prior research, best described the battery of eight subtests. This factor was found to be invariant across sex when separate analyses for males and for females were compared. The coefficient of congruence for the general factor across sex was .98, and the salient variable similarity index reached a value of 1.00. |