Whatever distrust we may have of the sincerity of those who converse with us, we always believe they will tell us more truth than they do to others.

Everyone knows people shade the truth, and almost everyone exempts themselves from being shaded. You can watch someone handle another person carefully and still assume that with you they are being straight, because their attention feels different when it is pointed at you. It usually is different, and that is not the same as more honest. The warmth is real and the disclosure is still selective.

Where something matters, check it rather than relying on how the conversation felt. And notice how much you yourself adjust from one listener to the next, since that rate is probably closer to the general one than you would like.