Perhaps the theory of Parsons allows it only to analyze the kinship system in the U.S. in the '40s, among those living in urban areas and belong to the middle class. Conclusion However, the thesis of Parsons in this text is not without merit. Parsons was the first sociologist to analyze the kinship system in the United States and was the first to propose the concept of the conjugal unit, which is nowadays usually refer to as the nuclear family. We agree with the same respect that piece of Parsons, despite the ...