kapusta – what would be the minimal requirements to conduct a survey to prove (or disprove) that the age gap is responsible for a large portion of the shidduch disparity, that would allow the survey to be acceptable?
Would every frum family in the US have to be surveyed? How would eligible frum families be identified for participation? What response rate would be minimally acceptable? What questions would have to be asked? Who would cover the (very significant) cost of this scientific survey?