Wade M G, Ellis M J, Bohrer R E
J Exp Anal Behav. 1973 Jul;20(1):155-62. doi: 10.1901/jeab.1973.20-155.
The interaction between the arousal to action of environmental stimuli and recovery from that activity was presumed to generate biorhythms in the activity level of children. The level of environmental stimuli was manipulated by varying the play-group size and the apparatus, and higher environmental complexity was expected to produce more pronounced rhythms. The heart rates of 16 subjects playing in monad, dyad, and tetrad group sizes, in two playroom configurations, were monitored and spectral analysis used to locate significant biorhythms. There was a tendency toward 40-min (slow frequency) and 15-min (fast frequency) biorhythms. The group size manipulation produced the strongest biorhythmic behavior in the dyadic groups. Apparatus differences were not significant but the configuration containing a minimum quantity of play apparatus produced more variable activity than the configuration containing a large amount of play apparatus.
环境刺激引发行动的觉醒与该活动后的恢复之间的相互作用，被假定会在儿童的活动水平中产生生物节律。通过改变游戏小组规模和器材来操控环境刺激水平，预计更高的环境复杂性会产生更显著的节律。对16名受试者在两种游戏室配置下，分别以单人、双人及四人小组规模进行游戏时的心率进行了监测，并采用频谱分析来定位显著的生物节律。存在一种倾向于40分钟（低频）和15分钟（高频）生物节律的趋势。小组规模的操控在双人小组中产生了最强的生物节律行为。器材差异不显著，但包含最少数量游戏器材的配置比包含大量游戏器材的配置产生了更多变异性的活动。
