IN THE immediately preceding report, Shaw (1) investigated some effects of unequal distribution of problem-related information in group structures. In general, he found that information distribution within structures had no effect upon over-all structure measures of time, message units, errors, or morale although decreasing or increasing the amount of information initially available to an indiindual within a structure had an effect similar to respectively decreasing or increasing the individual centrality index of that position.There are, however, other distributions which affect the generality of this finding. In any structure having central person(s) information may be distributed so that a peripheral person receives more or so that a central person(s) receives more. Shaw's experiment tested only the former possibility: the present experiment tests both possibilities using the four-person wheel structure.
Pursuit rotor learning provides possibilities for the study of a special kind of reminiscence-bilateral reminiscence-which has been reported in a number of recent papers. Representative studies are those of Ammons and Ammons (4), Grice and Reynolds (6), Irion and Gustafson (9), Kimble (10), and Rockway (13). In pursuit rotor studies of bilateral reminiscence, Ss perform with one hand prior to rest and change to the other handthe transfer hand-following rest. The bilateral reminiscence phenomenon has been studied principally with a view to localizing reactive inhibition (6, 9, 10). Results from the investigations of such presumed reactive inhibition effects suggest that these effects are not specific to the effectors exercised prior to rest but may involve more central processes. Because the different experiments have employed techniques which vary in such respects as prerest and postrest hand, trial duration, intervals between trials, duration of practice, and sex of Ss, the results are not strictly comparable. However, it does appear that bilateral reminiscence is similar, as a distribution of practice phenomenon, to the earlier discovered unilateral reminiscence, although, as shown by Grice
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