Encyclopedia of Graphs

This network is an addition to the original San Juan Sur network. Represents the ties in 75 families, concerning the death of the head of the family.

Background:

In 1948, American sociologists executed a large field study in the Turrialba region, which is a rural area in Costa Rica (Latin America). They were interested in the impact of formal and informal social systems on social change. Among other things, they investigated visiting relations between families living in haciendas (farms) in a neighborhood called San Juan Sur. The network of visiting ties is a simple directed graph: each arc represents "frequent visits" from one family to another. The exact number of visits was not recorded. Line values classify the visiting relation as ordinary (value one), visits among kin (value two), and visits among ritual kin, i.e., between god-parent and god-child. This is the San Juan Sur network.

This network is an addition to the former network, where the arcs represent the answers of the (head of) families to the question: "In case of a death in the family, whom would you notify first?". In this file (SanJuanSur_deathmessage.net), the coordinates of families correspond with the locations of families in the original sociogram drawn by the researchers.

Network image:

History:

• Original author: Charles Price Loomis (1905-1995).
• Data collected and translated into Pajek data files by W. de Nooy, in 2001.

References:

• Charles P. Loomis, Julio O. Morales, Roy A. Clifford & Olen E. Leonard, Turrialba. Social Systems and the Introduction of Change (Glencoe (Ill.): The Free Press, 1953): p. 45 and 78.
• W. de Nooy, A. Mrvar, & V. Batagelj, Exploratory Social Network Analysis with Pajek (Cambridge: Cambridge University Press, 2004), Chapter 9.

More information:

• http://vlado.fmf.uni-lj.si/pub/networks/data/esna/visits.htm
• http://vlado.fmf.uni-lj.si/pub/networks/book/esna2.htm