Research has indicated two dimensions of attachment, Avoidance and Anxiety.
Secure people understand relationships better; they know what ingredients go into a well-functioning relationship and are adept at providing and receiving interpersonal support.
For example, when a secure person is upset, he/she feels comfortable turning to his/her partner for emotional comfort and accepts that they are each dependent on each other for assistance as problems arise.
Thinking about the recent meta-analysis on breakups in dating couples, one of the interesting findings of that study was that someone’s attachment “style” (whether someone is secure or insecure) doesn’t predict whether that person’s relationship will last or end.
It would seem that people who are secure would have longer lasting relationships, and insecure people would be more vulnerable to breakups.
The Importance of Shared Environment in Mother-Infant Attachment Security: A Behavioral Genetic Study.
Rholes (Eds.), Attachment Theory and Close Relationships (pp.
Specifying the Neurobiological Basis of Human Attachment: Brain, Hormones, and Behavior in Synchronous and Intrusive Mothers.
Journal of Personality and Social Psychology, 61, 226-244. (1991) Childhood Experience, Interpersonal Development, and Reproductive Strategy: An Evolutionary Theory of Socialization.
But the picture is a little bit more complicated (and interesting) than that.