The performance of 68 preschool children, ages three (28), four (21), and five (19), on selected phoneme-grapheme correspondence tasks was analyzed for age and sex differences in two stages of data collection. First, the children spelled their first names and the initial of their last names with letters on a magnetic board, after which they arranged all the letters on the board in alphabetical order. Second, the children who accomplished this screening task were shown a set of pictures, then asked to repeat and spell the depicted words with the magnetic letters. No significant age differences on the name tasks were found for three-year-old children; that is, the oldest child in this group did not perform significantly better than did the youngest. Similar results occurred for the five-year-old children, while the four-year-old children showed significant differences between the oldest and youngest on alphabetical sequence. Two significant sex differences were found, favoring three-year-old girls in the name tasks and five-year-old boys on the alphabet tasks. Younger children performed better on the second stage tasks, with younger females performing significantly better than older females. On the basis of this data, it appears that sex and chronological age may be less significant in performing the examined language tasks than had been assumed previously. (Appendixes contain the testing protocol, spelling frequencies, and research procedures.) (RL)