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| V Englisch (en) | ==== Round and rectangular emotion space ==== In addition to considering independent valence and activation values, the two-dimensional emotion space allows the distance of the point from the coordinate origin to be interpreted as emotion intensity. Kopiez et al. (2011) refer to emotion intensity as a dimension and both the evaluation of the coordinates based on their x and y components and the direction (of the angle) as an analysis of emotion quality. These designations seem to be unfortunate, as the distance from the coordinate origin is not a third, independent dimension, but merely a reinterpretation. A point in the coordinate system is thereby defined by polar coordinate form, i.e., by the two "dimensions" distance from the origin (emotion intensity) and angle between the line connecting the point with the origin and the x-axis (emotion quality). An analysis of x and y coordinates should also allow both qualitative (e.g., ratio of x and y values) and quantitative evaluation (e.g., using the individual dimensions). An examination of the two individual components is quite common and refers to quantity, not only quality (cf. chapter 4). Depending on which of the two ways of interpretation should be the focus of the evaluation, the interface should be chosen. If one would like to interpret the data from a series of experiments with the 2DES with regard to emotion intensities, the restriction to the circle as with the Feeltrace offers advantages. With a rectangular model, different maximum intensities can be specified for different angles because, for example, the upper right corner is farther from the origin than the outermost point on the x-axis at the right edge of the screen. One would have to decide whether to calculate with absolute distances to the origin or relative distances with respect to the maximum possible distance at a given angle with the x-axis (cf. Kopiez et al. 2011, p. 153f.). Conversely, a problem arises with the circular emotion space when evaluating the individual components valence or activity: Can a positive emotion contain less arousal than one that is neutral with respect to valence? |