Focusing on focus groups

References 

1. Kaufman MT. Robert K. Merton, Versatile Sociologist and father of the focus group, dies at 92. N.Y. Times. Monday, February 24, 2003;A19
2. Purdum TS. Focus Groups? To Bush, the crowd was a blur. N.Y. Times. Sunday. February 23, 2003. The Week in Review