SOME VOWEL DIGRAPH GENERALIZATIONS PRESENTLY TAUGHT WERE INVESTIGATED TO DETERMINE THE OVERALL UTILITY OF THE GENERALIZATIONS WHEN APPLIED TO A LIST OF REPRESENTATIVE WORDS MET BY CHILDREN IN READING INSTRUCTION IN GRADES 1 THROUGH 6, TO DETERMINE THE UTILITY OF ALL POSSIBLE SUBGROUPS OF ADJACENT VOWELS, AND TO EVOLVE NEW DIGRAPH GENERALIZATIONS APPLICABLE TO LARGE NUMBERS OF WORDS. AN OVERALL UTILITY OF 33 PERCENT WAS FOUND WHEN THE ORIGINAL VOWEL DIGRAPH GENERALIZATION WAS APPLIED TO A LIST OF 506 WORDS CONTAINING ADJACENT VOWELS. FOUR SUBGROUPS HAD A PERCENTAGE OF UTILITY ABOVE 50 PERCENT -- "AI,""EA,""EE," AND "OA." TWO GENERALIZATIONS WHICH WERE FORMULATED AND INVESTIGATED YIELDED 72 AND 92 PERCENT OF UTILITY. THE STUDY CONCLUDED THAT CHILDREN IN GRADES 1 THROUGH 6 SHOULD IMPROVE IN WORD ANALYSIS IF THEY UNDERSTAND THAT WHEN TWO VOWELS ARE TOGETHER IN A WORD, ONLY ONE VOWEL SOUND IS USUALLY HEARD. MORE SPECIFIC PHONIC GENERALIZATIONS SHOULD PROVE USEFUL TO THE CHILDREN WHO SHOULD KNOW THAT VOWEL DIGRAPHS ARE USUALLY AFFECTED BY THE CONSONANTS THAT FOLLOW. CARE SHOULD BE TAKEN TO ASSIST CHILDREN TO DEVELOP FLEXIBILITY IN THE USE OF ALL PHONIC GENERALIZATIONS. TABLES AND REFERENCES ARE INCLUDED. THIS PAPER WAS PRESENTED AT THE INTERNATIONAL READING ASSOCIATION CONFERENCE (BOSTON, APRIL 24-27, 1968). (JMM)