***** To join INSNA, visit http://www.insna.org ***** Hi group, For a blockmodel derived through structural equivalence, I understand that an intra-positional perfect oneblock, i.e a positional self-tie, is equivalent to the actors in the position being a cohesive group. Thus, in a block image or reduced graph of such a blockmodel, a position with a self-tie could be described as a cohesive position. For regular blockmodels, however, the special criteria for oneblocks could of course generate an intra-positional perfect oneblock (regular block) without every actor in the position in question being a cohesive subgroup where all actors interact with every other. As a matter of fact, under ideal circumstances, such a "self-tying" regular block could very well be made of each actor in the position having a singular tie to another actor in the position. Thus: would it be terminological correct to call a position with a self-tie in a regular blockmodel (i.e a regular block along the diameter of the blockmodel/block image) a cohesive position? Any other terminology in use? /Carl --- Carl Nordlund, BA, PhD student carl.nordlund(at)humecol.lu.se Human Ecology Division, Lund university www.humecol.lu.se _____________________________________________________________________ SOCNET is a service of INSNA, the professional association for social network researchers (http://www.insna.org). To unsubscribe, send an email message to [log in to unmask] containing the line UNSUBSCRIBE SOCNET in the body of the message.