justment and prediction have used a very large number of items. The length of these tests is their main disadvantage. The Burgess-Wallin Marital-Success Schedule contains 892 numbered items, but several of these have multiple subitems.3 Counting the multiple subitems, it requires answers to a possible maximum of 246 questions.4 Enumerating items on this basis, the Terman Happiness Test contains 75 items;5 the modified Terman-Oden test contains 103 items.6 The Locke Marital-
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Locke et al. (1959) studied this question.