Any topic (writer’s choice)

1  What  is  centrality  in  a  network  context?  What  is  the  difference  between  degree centrality  andcloseness centrality? When might we want to use a measure like closeness centrality to discuss someonesposition in a social network instead of degree centrality?  What about transitivity?  When might wecare more about transitivity than we do about centrality as researchers?
2.  What is contagion in a network context?  Describe one example of network contagion in your own life.In your example, identify the social network (a network of classmates?  a family?  a workplace?), thenature of the connection between individuals (do you exchange information?  affection?  money-labor?),the directionality, and the thing spreading through the network.
3.  Much of the research with which we have engaged so far is now over a decade old (if not older).  Whatmore recent changes social changes, technological innovations, political phenomena, etc.  may havechanged  some  of  the  conventional  wisdom,  findings,  or  scientific  understandings  of  social  networkssince this research was carried out?  Please describe at least one change and walk us through what theconsequences of that change might be on current and future social network scholarship.