Christofides (2003) has given an improved modification of Warner’s (1965) pioneering randomized response (RR) technique in estimating an unknown proportion of people bearing a sensitive characteristic in a given community. As both these RR devices are shown to yield unbiased estimators based...

Cost-benefit ratios for surveys are related to the congruence between objectives and survey measurement capabilities. A high degree of congruence requires careful matching of objectives and survey design. Thus, emphasis is placed on survey planning and improvement of relationships between survey...