In this busy world today most of us don't have time to be overly sensitive and we don't TAKE the time to feel how we feel around a person, place or thing.
Another true but sad example: In our culture (America) the woman walks next to the man or in front of the man.
This means that they get to treat you the way they want, and manoeuvre the situation so you don't get to feel the appropriate responses. Of all the abuses heaped upon daughters of narcissistic mothers, this might be the worst.
They dismiss and undermine your your feelings and emotions to make you feel only what's acceptable to them that you feel.
If you can't even trust and own your own feelings - well, what have you left?
Invalidation leaves daughters of narcissistic mothers with a lot of doubt into adulthood, not able to trust their own feelings - how do they know that they're feeling what they think they're feeling, or if it's right?
It could because they don't agree with them or they're uncomfortable dealing with them.
That my friends is invalidation among other things.
Through a simple "Oh, grow up," or a "Stop being a baby," your partner is rejecting the validity of your emotions.
Your partner is basically saying that your opinion or feelings don't count.
To show you how children learn by the behavior of the adults around their mother: My daughter, her girlfriend and I had been shopping. My daughter opened the door, pulled the back seat open for me to get in and then she climbed into the front with her friend.
Her girlfriend kept saying "I can't believe you put your mother in the back seat". The sad part is I didn't know anything was wrong with that.