Is it the gender powering the engine behind the mood swings or the age? I guess I won't know until I have the opportunity to raise a boy... but I'm gonna follow my experience and intuition and say that it's probably gender. Its almost impossible to predict Avery's mood lately. She's up. She's down. She's up again. Sometimes the simplest things will turn the switch from happy to raging mad and then back to happy again. Up. Down. Up. Down. Up.