Based on our experience and feedback from clients, the short answer is yes it can help, and in addition effect change both within the relationship and in the individuals.
We have two sources of evidence for this. First, looking at the experience of service data from hundreds of individuals and couples after the first six weeks of therapy, and then at the end. The results show high satisfaction rate, with 90% of our users rating the sessions as helpful. The vast majority also said that the sessions helped them to a better understanding of themselves, their partner and improved the relationship with their children.
Second, we use reliable and well-validated measures to assess well-being, mental health symptoms and relationship satisfaction throughout the therapy. Our research team has recently published the outcome of the largest naturalistic study in couple therapy ever published. The results show convincingly that our model, as delivered by therapists that were trained here, is indeed effective as a treatment for relationship distress and for individual distress in addition.