. In this problem we want to test for core–periphery structures at the beginning and end of the winter for the South Pole networks. Johnson et al XXXXXXXXXXfound that networks that had core–periphery...

. In this problem we want to test for core–periphery structures at the beginning and end of the winter for the South Pole networks. Johnson et al. (2003) found that networks that had core–periphery structures tended to have higher group morale. The data involve strong ties among crew in terms of who interacts socially with whom. In UCINET go to Network|Core/Periphery|Continuous and load “Beginning_Winter_Valued_GT_6” and hit OK. Be sure to save the ucinetlog output for later comparison (you can also minimize it for later use). Do the same for the “End_Winter_Valued_GT_6.” Run the analysis again only this time use the categorical model for both time periods. How did the core–periphery nature of the network structure change over the course of the winter?