I’m preparing for a workshop this weekend on groups and church transitions. I went back and reviewed some of the literature about groups. I discovered in the same body of literature, the physical limit on the number of individuals that can effectively take part in a conversation and the effect of background noise on conversation. I've described our church coffee hour like a subway station: noisy, crowded with no trafflic flow. Moving from one side of the room to the other is a feat. And yet we invite new folks to join us so we can get to know each other. Hah! After my review, I would say that Coffee Hour is the worst place to get to know anyone – or to have any conversation. Conversational groups are limited to a maximum of seven individuals if they speak in a raised voice, a group of five if they are speaking at normal voice levels. The maximum nose to nose limit for comfortable conversation is about five feet. Therefore the maximum conversation group size would be five, with people in a circle, shoulder to shoulder spacing of 20 inches between adjacent individuals. We may have room for four or five such groups. Visualize the Olympic rings.
And to make matters worse is the background noise, Noise levels of cocktail parties (substitute coffee hours) is considerably in excess of noise levels recorded on city streets and are just below the level sufficient to induce impairment. Speech recognition is close to zero, conversation becomes impossible and maximum group size approaches one. No wonder Annapolis UU’s are so agreeable. We can’t hear anyone – so we just nod.
Sommer (1961),
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