Recent studies of the "Blue Phenomenon" have shown that in some countries outside the USA not 'blue', but 'red' or 'black' is the predominant color choice. It is argued that the differences between countries, in addition to an explanation by cultural factors, might reflecr different formulatiom of the question used to provoke a response. It is shown that in the Netherlands responses to the question to write 'your favorite color' are considerably different from responses to the question to write 'the first color name that comes to mind.' It is concluded that comparison of color-production phenomena over countries requires a better control over formulation of the question.
In this study sequential bias in randomized response sequences is simulated by computer. The computer model assumes that response bias is composed of two components. The first is a repetition avoidance tendency, which is simulated by a memory search through the seven most recently produced responses. and the second 1s a repetition tendency for the two most recently produced responses. This repetition tendency is assumed to be related to the better availability of recently produced responses. Both processes together give a reasonable approximation of human subjects' data.The results can be explained by the assumption that subjects try to control perseveration tendencies by using a comparison-based memory search mechanism.
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