"Thinking Makes It So" by Ochsner and Gross
"Neuroscientific data are not special in the sense that they provide a 'magic window' on the mind that tells us what 'really' is going on."
This quote, from one of the sections which defines this as a chapter in a book and not a peer-reviewed article, demonstrates a humility not commonly seen in neuroscientists.
"In this study, we asked 15 female participants...." This seems like extremely few people for a scientific study, and it's curious that they were all female. It was a little odd that this wasn't ever explained.
The second study was more comprehensive than the first, but I am still curious what the results would be if researchers looked into the location of brain activity during the reappraisal of positive thoughts.