Vigilance performance as a function of paired monitoring

2 experiments were performed to determine the effect of pairing of Os upon individual monitoring performances. Both studies employed 2 groups of 20 Ss each. Group 1 consisted of paired monitors and Group 2 consisted of isolated monitors. Experiment I employed a rate of 24 signals/hr.; Experiment II employed a rate of 6 signals/hr. All Ss monitored a circular light display for a period of 90 min. Neither experiment indicated an overall facilitation of performance resulting from pairing, but both demonstrated significant relationships between formances on the members of the pairs. It was hypothesized that the degree of conversational interaction between members of the pairs might account for the observed effect.