Christmas Eve. What it does and how to hold it.

The neuroscience of Christmas Eve is, essentially, the neuroscience of peak anticipation. The dopaminergic reward system — the circuitry that produces the sensation of wanting and expecting and looking forward — is running at its highest point of the year in children on December 24th. The brain that has been building toward this day for four weeks is, on this specific day, in a state of physiological preparation for reward.

What this produces, behaviourally, is a child who is simultaneously elated and destabilised. The elevation of anticipation also elevates emotional sensitivity: the child who is at peak positive anticipation is also at peak reactivity. Small disappointments feel enormous. Minor changes to expected plans produce disproportionate distress. The child who is inconsolable on Christmas Eve about something apparently trivial is not being dramatic. They are at the edge of their regulatory capacity in the positive direction, and any additional load tips them over.

This is why Christmas Eve is consistently one of the hardest parenting days of the year, despite being the one that, in anticipation, seemed like it would be the easiest. The higher the anticipation, the thinner the regulatory margin. In the Vienna clinics I run, I see this expressed as: the Christmas Eve child who cannot eat dinner, cannot sit still, cannot manage sibling interactions. All of these are symptoms of the same thing: peak positive arousal with no buffer.