тестировании какого-то конкретного продукта, правильно? Какой продукт, если не секрет? От этого будет зависеть, каким образом авторы проводили сегментацию исследуемых групп. Я подозреваю, что "purpose area" - area of segmentation for strategic purposes. Здесь вот есть о сегментационных исследованиях: Segmentation studies
A segmentation study is designed to determine if and how a market can be usefully segmented for strategic purposes. Segmentation may be done by attitude, behavior, or characteristics of users. The idea behind this study is that a category can be broken into subgroups each with distinct needs, attitudes or characteristics; a brand may then be targeted to one of these segments as a way of focussing its marketing effort and separating it from competitors.
These studies are large, complex and often very expensive. They require a skilled technician to conduct the analysis, a skilled researcher to design the questionnaire and draw a proper sample, and an experienced analyst to draw meaning from the data. Without the above qualifications, such studies should not be undertaken.
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