Multidimensional scaling methods for absolute identification data. (original) (raw)

This research explores the cognitive task of Absolute Identification (AI), which has historically been linked to a limit of 7±2 stimuli in short-term memory as proposed by Miller. Contrary to this notion, findings indicate that with moderate practice, participants can significantly enhance their AI performance. The study suggests that while traditional AI tasks involve unidimensional stimuli, the psychological representation of these stimuli may be multidimensional. A close examination of the common modalities reveals that stimuli such as tone loudness do not exhibit learning effects, which may prompt a reevaluation of stimulus selection in AI research.