Health Psychology because a recognized subdiscipline in the late 1970s. In 19XX Health Psychology became the 38th Division of the APA. In 1982 their journal, Health Psychology, launched.
Here I am interested in exploring the sociality of health psychologists in the first decade after the founding of this publication: Who were the main collaborative actors during this period? What were the most active fields? Where were these researchers located? (This network is directed towards the first question with hopefully some suggestive hints as to the others).
First, I’ve imported my network data: Nodes are authors, edges represent co-authorship. For the purposes of this network, I have included only first and second authors.
Next, I run my relevant statistics (Ave. Weighted Degree[1.315], Modularity[0.992], etc.)
Then I want to reduce the number of nodes I’m looking at so I can make sense of this mess. I hit Filters > Library > Attributes > Range
I decide to filter by weighted degree because I want to look at the most connected researchers. Interestingly, many of the most connected (those linked through publication co-authorship) don’t look like they’re connected to each other …
Now I want to start organizing the network into something more visually appealing so I can start to look into who and how these early health psychologists are related (if at all).
I go to Layout > Force Atlas
I adjust the Repulsion strength to 1000, I drop the Attraction strength to 0.01, and I click on the box to Adjust by Sizes. I also hit the box to Show Node Labels at bottom of display.
I then go to Partition > Nodes > Modularity Class
After having done this (color-coded them by modularity class), it’s interesting to reincorporate all of the data (nodes, edges) and re-run the layout (Force Atlas). This time I take off the Filters, up the Repulsion to 5000 and put the Attraction strength back up to 10.
It’s like releasing our well-connected nodes back into the wild with trackers so we can follow them and see exactly to whom they are connected.
Zooming in you can see some small networks:
But for the most part, it’s a sea of dyadic relations …
When exported in .pdf with curved lines and labels …here