My INTJ daughter doesn't show much emotion and she isn't very open about what she thinks of feels. I just figure still waters run deep and she'll share when and if she feels like it. I don't think my INFP daughter is any deeper because, to me, her feelings seem more fleeting. Feelings that are not sustained seem shallow to me. So for whatever that's worth.
Edit: Oh. Sorry. I'm not an INTJ.
