This study evaluated the relationship between attending to task and speed of task completion in a vocational training program. Six mentally retarded male adults were randomly assigned to 2 experimental groups and treated in multiple-baseline fashion. Group 1 received reinforcement for speed of task completion; Group 2 received reinforcement for time spent attending to task. Results showed that subjects who spent more time completing tasks also spent an appreciable percentage of their time attending to task, by comparision with baseline measures. Also, subjects reinforced for not attending to task without exception did not complete tasks. On the other hand, directly reinforcing speed of task completion resulted in speedier completion of tasks and increased time spent attending to task. Further, directly reinforcing time spent attending to task resulted in more attending and more rapid task completion. Determining which measure, when treated, would be the more economical to address was only conservatively estimated. It was suggested that reinforcing facilitative responses may reduce observed variability in responding associated with speed of task completion.Several studies have reported improvements in academic performance and attention as a result of direct and concurrent reinforcement of classroom behaviors related to performance and responses to academic stimuli or to academic responses alone. Kirby and Shields (1972) found that selective reinforcement for performance occasioned increases in the percentage of time spent attending. In contrast, Ferritor, Buckholdt, Hamblin, and Smith (1972) showed performance and attention to be responsive to programmed contingencies only when selectively reinforced. Recently, McLaughlin, Brown, Malaby, and Dolliver (1977) corroborated Ferritor et al. (1972) by showing that direct reinforcement of attending alone failed to affect production measures.The most recent effort to study the relationship of direct and collateral changes in attending and academic performance resulting from attending versus performance contingencies was made by Hay, Hay, and Nelson (1977). They found that the performance contingency was the more effective intervention strategy, producing increments in both attending and producing. The attending contingency increased attending behaviors without concomitant academic improvements.In short, research findings are in conflict on the relationship between attending and producing. Evidence available seems to indicate that academic perfor-1 The author acknowledges the cooperation of James Q. Affleck and Irvin Emanuel in conducting this investigation.