Abstract
This paper analyses the application of Configural Frequency Analysis (CFA) to free sorting data. It is intended to start a discussion about this simple supplementary analysis tool for free sorting data. Common features of sorting data and their relevance for CFA are discussed, in its approach to using both descriptive and confirmatory data analysis. Sample size requirements of card sorting are also revisited for descriptive analysis. The sample required to some extent depends on the specified domain. The average number of different configurations encountered depends on the number of sortings collected, the number of items included in the domain and the qualities of the domain. A simple exact significance test is proposed for hypothesis testing of configural frequencies in free fuzzy sorting data.
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