Indeed, to Sequeria’s point, as early as 1962 psychologists were criticizing Bowlby’s theory for being “single factor” because it focused so much on the behavior of a child’s mother. There are also studies that directly contradict attachment theory and have found that a person’s attachment style in romantic relationships doesn’t mirror the relationship they have with their parents. And there is also much research that suggests that a person’s attachment style and behavior is different in their professional relationships, in their friendships, and with their love matches and, therefore, debunks the all-encompassing nature of attachment theory.