What is organized between two nervous systems, and not within a single one.
Valérie-Anne O'Callaghan
You're not the same with everyone.
It may have happened to you. In one relationship, you were the one who pursued: the one who texted first, the one who demanded clarity, the one who couldn't put their phone down. In the next, you were the one who needed space, the one who kept postponing the pending conversation, the one who felt invaded without knowing why.
The common interpretation is that one of the two versions was the true one and the other a reaction. The accurate interpretation is different: both were. Attachment is organized between two nervous systems, and what is activated in you also depends on where the other person is.
When someone withdraws, almost anyone will pursue. When someone pursues intensely, almost anyone needs space. What we call your pattern is your default tendency, and that tendency shifts depending on who you're with.
One clinical detail sums it up: many people only discover their avoidant side when they are finally with someone more anxious than they are. And they discover their anxious side with someone who withdraws more quickly than they used to.
What is activated in each one, in real time
The chase-and-retreat cycle is often described as a dynamic that unfolds over weeks. In reality, it happens in seconds, within the same conversation, and it occurs in the body before it is expressed in words.
In the pursuer, neuroception detects a signal of distance. The sympathetic nervous system is activated: heart rate increases, breathing becomes shallower and faster, attention narrows to the other person's face seeking confirmation. A physical urgency arises to resolve it now. And that urgency produces precisely what puts the most pressure on the other person.
Something happens to the person who withdraws that is rarely visible from the outside. Gross (1998) documented that emotional suppression contains the emotion without eliminating it: the physiological arousal remains, sometimes even higher. So the person who appears cold is often just as aroused as the one who pursues. The difference lies in the escape route. One moves outward, the other inward.
This explains a common misunderstanding. The pursuer interprets the other's apparent calm as indifference and intensifies their efforts. The retreater interprets the persistence as an invasion and lowers their voice even further. Both are responding to a threat that the other doesn't perceive.
Why are they found
Three mechanisms, and it's best not to mix them.
The first is that the familiar is perceived as safe. Neuroception compares what is new with what is known, and the known produces a sense of recognition that the body interprets as fitting. Someone predictable may seem neutral; someone who replicates the original dynamic seems intense. Intensity is mistaken for compatibility.
The second is intermittent reinforcement. Berridge and Robinson showed that dopamine encodes the seeking drive before pleasure, and that this drive fires more strongly when reward arrives irregularly. The circuit is more active when it cannot predict what it wants, and this intensity is mistaken for attraction.
The third is mutual confirmation. Each gives the other exactly the proof their system expects to find. Your search confirms that closeness is encroaching. Their withdrawal confirms that affection is leaving without warning. Both emerge from the episode with their model reinforced.
Caution is advised. The idea that anxious and avoidant individuals pair up more often than chance would predict is widespread, popularized primarily by Levine and Heller (2010), and its evidence remains under debate. Some of what is observed could be explained by selection: secure individuals resolve or abandon these dynamics sooner, so anxious-avoidant pairs remain available and visible for longer. What is well-documented, however, is what happens once they are together.
What keeps the cycle alive
Shaver and Mikulincer (2012) have accurately described the dynamic: the more closeness the anxious person seeks, the more the avoidant person withdraws; the more the avoidant person withdraws, the more the anxious person is activated. The two systems reinforce each other, and neither gets what it needs.
What sustains this is that each person is right from their own perspective. The distance exists, so the anxious person's protest responds to something real. The pressure exists, so the avoidant person's withdrawal responds to something real. That's why the argument about who is right leads nowhere: both are right, and the problem lies in the loop, not in the content.
Johnson (2008) calls it the negative cycle, and points to the shift that changes the conversation: to stop discussing the topic of the day and start discussing the pattern that the two of them unwittingly feed into.
What does each person do to get out?
Breaking out of the cycle requires different moves on each side, and neither works if the other doesn't make its move.
The person pursuing needs to lower their arousal level before taking action in the relationship. Name the sensation in their body before recounting the story that explains it. Lengthen the exhalation for a minute or two. Wait for the urge to text or ask for confirmation to subside before deciding whether to do so. And then, if the need persists, ask for what they need directly.
The person who withdraws needs the opposite: to linger a little beyond the point where the system demands to leave. To register the exact moment of withdrawal, what was said and felt a second before. To hold on for thirty seconds longer than the impulse dictates. And to give notice instead of disappearing: to say they need a while and to say when they'll be back. For the person on the other end, the difference between withdrawing and giving notice is enormous.
That warning is the piece that most quickly breaks the loop, because it turns withdrawal into information instead of abandonment.
What happens when one of the two changes
There's a part that almost no one talks about. When one of the two becomes more confident, the cycle breaks, and breaking it destabilizes the relationship before it improves it.
If the pursuer stops pursuing, the other loses the cue they were using to orient themselves. The absence of pressure can be experienced as disinterest and, for the first time, trigger their own fear of loss. If the one who was withdrawing stops withdrawing and stays, the other finds the closeness they were seeking and discovers that it also makes them uncomfortable.
This period is real and it's wise to anticipate it, because many couples interpret it as a sign that the change isn't working. What's actually happening is simpler: the system they had built together is no longer sustainable, and there isn't another one in place yet.
And there's another outcome worth mentioning. Sometimes one partner becomes more secure, and the relationship doesn't keep pace. Breaking out of one cycle doesn't guarantee the relationship will continue. It guarantees that the next cycle won't be structured the same way.
Attachment describes a relationship, rather than an identity.
Recognizing yourself in a profile says something about how you usually operate, but little about who you are. Attachment is measured in dimensions, not categories; it changes over time and changes with the person you're with.
In the follow-up study by Waters et al. (2000), from childhood to age twenty, slightly more than a quarter of the group ended up in a different classification than they had at the beginning. Fraley (2002) calculated a moderate stability, r = 0.39, consistent with a model where early experiences leave a mark and later experiences modify it.
What is learned in a relationship can be reorganized in a relationship. That's why the work consists of being able to notice the activation as it occurs and choosing what to do with it, rather than finding someone who doesn't activate anything.
Sources and references
Berridge, K.C., & Robinson, T.E. (1998). What is the role of dopamine in reward: hedonic impact, reward learning, or incentive salience? Brain Research Reviews, 28(3), 309-369.
Fraley, R. C. (2002). Attachment stability from infancy to adulthood: meta-analysis and dynamic modeling of developmental mechanisms. Personality and Social Psychology Review, 6(2), 123-151.
Gross, J.J. (1998). The emerging field of emotion regulation: an integrative review. Review of General Psychology, 2(3), 271-299.
Johnson, S. (2008). Hold Me Tight: Seven Conversations for a Lifetime of Love. Little, Brown.
Levine, A. and Heller, R. (2010). Attached: The New Science of Adult Attachment. TarcherPerigee.
Porges, S. W. (2011). The Polyvagal Theory. W. W. Norton.
Shaver, P.R., and Mikulincer, M. (2012). An Attachment Perspective on Human Development. Guilford Press.
Waters, E., Merrick, S., Treboux, D., Crowell, J., & Albersheim, L. (2000). Attachment security in childhood and early adulthood: a twenty-year longitudinal study. Child Development, 71(3), 684-689.