Two groups of subjects, one of essentially unselected young adult stutterers, the other of essentially unselected young adult non-stutterers, were tested on Van Riper''s angle board at all angles from 0 through 90[degree], using the kinaesthetic and visual patterns. The testing procedure was similar to that employed by Van Riper. Scoring the productions on each pattern in terms of the number of principal horizontal movements made normally, the % of this number which were made by the right hand indicated no significant differences between stutterers and non-stutterers. Correlations between the scores on each pattern and between the pattern scores and those obtained on a hand usage questionnaire were low for both groups, with one possible exception. Stutterers and non-stutterers were also very similar in their scores on the hand usage questionnaire. The performances were also scored in terms of the critical angle, as denned by Van Riper as the first of 2 successive angles at which full reversal of the drawn pattern occurs. The two groups of subjects were not definitely differentiated in terms of these critical angle scores, nor in terms of the hand, right or left, by which the reversing was done. Van Riper''s findings were compared with those from the present study; it would appear that his highly right-handed and highly left-handed subjects were quite extreme groups, while his ambidextrous subjects were fairly representative of non-stutterers generally. His conclusion that stutterers resemble ambidextrous non-stutterers would seem to mean, therefore, only that the average stutterer resembles the av. non-stutterer on the angle board test. The test apparently fails to differentiate among individuals who do not reverse patterns with either hand, and that its discriminatory capacity is thus considerably limited, since many subjects, in the present study at least, did not reverse patterns.