For example? Looks like they publish plenty of self serving articles.
Th psychology behind the study was that editors would feel good about rejecting self-serving pieces (this is a conflict with editors - who really do want to believe they're protecting their readers... it's a balance... “do we reject what is obviously a good story just because we know it comes from ... “X” knowing X has an agenda tec etc... ) Lots of legitimate 'soul searching - (but to no avail...)
Turns out if MORE self-serving stories are added to the packet (easy ones to reject) that the average editor will accept MORE of the other stories - which also are 'self serving' but not 'as' self-serving.