A listener wrote in with a rather relatable, if slightly terrifying, problem: their lovely 10-year-old daughter turns into a tiny rage monster at the slightest hint of disappointment or being wrong. We're talking clenched fists, threats, and a level of sass that could curdle milk.

The experts, Tim Wright and Dr. Michael Gurian, break down what's likely going on here. It's a perfect storm of factors that many dads of daughters will recognise:

1. **Hormonal Havoc**: At 10, she's smack in the middle of pre-puberty or early puberty. Hormones are firing off like misdirected rockets, causing massive emotional swings. It's not an excuse, but it is a very real biological reality.
2. **Perfectionism Pressure**: Many bright kids, especially girls, develop a deep-seated perfectionism. When they make a mistake or things don't go as planned, it feels like a catastrophic failure, triggering an oversized emotional response.
3. **Overstimulation Overload**: After a long day of holding it together at school, she comes home to her 'safe place'. When a small thing goes wrong (a tricky homework problem, a chore that needs re-doing), her already taxed brain gets overstimulated, and the only way it knows how to cope is to explode.
4. **A Red Flag to Watch**: The mum mentioned that her daughter sometimes tries to bite or scratch herself to 'calm down'. Dr. Gurian flags this as a serious warning sign. This behaviour, a precursor to self-harm, is her way of trying to manage overwhelming internal sensations. It's a circuit that's slightly broken, and it needs to be taken very seriously.

The core issue is that her emotional regulation system is being completely overwhelmed. She hasn't yet developed the tools to manage these intense feelings, so they spill out in the form of anger and aggression.