Abstract
To design and evaluate products and systems, it is very important to consider human satisfaction. However such methodology has neither been studied at all, nor paid any attention so far. Hence we kept our eyes on human satisfaction and have researched with psychological and physiological approaches to establish a method for measuring satisfaction. In this paper, psychological and physiological measurements were taken as a basic study. In psychological measurements, multiple mood scales composed of eight feelings were conducted on 253 students after the imagination of pleasure in making to obtain a measure to evaluate subjective satisfaction. The results showed that subjective satisfaction is high pleasant and medium arousal level and closely relate to liveliness and friendliness of eight feelings. In physiological measurements, electroencephalogram (EEG) on the forehead was measured from bipolar derivation when subjects were resting with eyes open and were working at four cases. The results of Fast Fourier Transforms showed that relative power of α band has a positive correlation with subjective satisfaction, while that of β band has a negative correlation. The results of this study revealed the possibility of satisfaction measurement.
