Hot answers tagged infant
The first thing that comes to mind is that your son learned he doesn't have to do unpleasant things if he pretends not to understand. So "Do you want a cookie?" gets a response, "Don't touch the glass!" doesn't. It might even be a certain tone of voice (for example, the one your wife uses when she wants him to do something) that's become a cue for him to ...
It's good to consider any challenges such as hearing or a neurological issue, but barring those I highly recommend you take a Love & Logic class and use the power of empathetic consequences. Also the "uh oh" song, as appropriate.
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