They started with an extensive questionaire and followed up with phone interviews... (epolitics.com)
TELEGRAPH - Apr 8 - Researchers at Webster Vienna Private University in Austria surveyed 75 users of Tinder or other dating agencies were asked to complete questionaires about their motivataion for online dating, and to rate their sociability, self - esteem and sexual permissiveness. (onlinepersonalswatch.com)
Whatever it may be, this is the reason we ask each of our new memers to fill out our extensive partner questionaire; so we know exactly what it is you are looking for in a man. (elitesingles.ie)