I am completing the British Social Attitudes survey, which seems pretty respected and partly government funded. Around 5000 participants invited at random every year.
First question is fine - What is your sex? A question about gender identity will follow this question. Options are female, male, prefer not to say.
Second question is the one I'm having trouble with,
Is the gender you identify with the same as your sex registered at birth?
This question is voluntary
Options are Yes, No (with a box to enter gender identity) and prefer not to say
I just don't know how is best to answer this honestly. I've never thought of myself as having a 'gender identity' and this seems to be a question in good faith and is collecting both sex and gender, which I believe is important.