open and honest communication
That does not mean it is the best way to communicate.
Not saying it is the best way to communicate :-) Just saying that the research supports the statement that open and honest communication is the optimal way to have happy and lasting relationships, which is the point of the article.
There are plenty of exceptions and caveats, as with any research - they apply to the majority, not all. However, one is most likely to win when going with the research unless there are clear reasons not to do so.
Mainstreaming Tell Culture and other rational relationship strategies in this listicle for Lifehack, a very popular self-improvement website, as part of my broader project, Intentional Insights, of promoting rationality and science-based thinking to a broad audience. What are your thoughts about this piece?