Answers are grounded in this paper and cite their sources.
Gay C. Kitson, Marvin B. Sussman, Gwendolyn K. Williams, Randi B. Zeehandelaar, Barbara K. Shickmanter, Jeanne L. Steinberger, Sampling Issues in Family Research, Journal of Marriage and Family, Vol. 44, No. 4, Methodology: The Other Side of Caring (Nov., 1982), pp. 965-981
No takes yet. Share an insight, caveat, or question.
Kitson et al. (1982) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: