DESIGNS TO BALANCE THE EFFECT OF ORDER OF PRESENTATION AND FIRST‐ORDER CARRY‐OVER EFFECTS IN HALL TESTS

ABSTRACT. The problem of balancing out the effect of order of presentation and the carryover effect of a preceding sample over a series of presentations of the same set of samples is addressed. A series of designs developed by Williams (1949) are used. The method of calculation is given. Tables containing about 50 consumers of each design for presenting from 4 through to 16 samples are given.