Geometry of individual variation in personality and sleep-wake adaptability

Scientific investigation is often aimed on generation and description of a low dimensional simple form that is, however, an accurate representation of the structure of numerous empirically obtained variables. In despite of this aim, some scientific descriptions of real world structures are difficult to visualize due to their dimensional complexity. This book considers two such structures, the structure of personality lexicon and the structure of adaptive ability of the sleep-wake cycle. It is aimed on demonstration that the shape of these structures might be more parsimonious than the shape yielded by factor analysis, a most widely used method of data reduction. In addition, the book introduces an original approach to analyzing empirical data sets that provides evidence of the three-dimensionality of the structure of individual variation in personality and sleep-wake adaptability.