If you rely on this too, or hope to, be careful: twins switch personality traits at will.
For example, one of our girls will be shy one week while the other is a social butterfly. Just when you think that is the pattern, they switch and the social standout now cries hysterically with strangers. Go figure.
We’ve seen switching of twin personalities and traits even at an early age in all these cases:
- who is a good eater
- who is a wiggle worm
- who wakes up first
- who takes good naps
- who drinks her bottle in one sitting
- who smiles at strangers
- who makes what sounds (our girls aren’t talking yet)
- who steals toys from the other
So if you want to keep your twins straight, particularly if they are identical, combine multiple data points in identifying each. Combine personality traits and even subtle visual clues to properly identify who is who.
It is fascinating to watch the switcheroo happen. Just keep your eyes open and enjoy the journey.