The present paper deals with the experimental methods evaluating psychological atmosphere of space. Experiments are carried out through three different simulators of the life-sized living room models, its 1/10-scale models and its slides, and we investigate how much the arrangement and quantity of furniture influences upon room-atmosphere on the semantic differentials scaling. As the result of factor analysis, two factorial dimensions ‘activity’ and ‘evaluation’ are extracted on each simulator. The results of three conditions are very similar on each SD scaling under the activity dimension, but the findings related to ‘evaluation’ are not so. An interaction between whole image and feeling of atmosphere is supposed to be related with the space valuation.
Whether rating by semantic differential method is appropriate is examined by two methods of magnitude estimation and paired comparison. As the result, the statistically meaningful differences is not observed on the judgement comparison of the three rating methods.

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The intention of this report is to develop methodology to analyze team activities during plant disturbance, and we focus here on analytical methods to extract and represent the basic information for any particular characterizations.
At first, using a training simulator for nuclear power plant operation, an experiment was made to obtain materials for our research. Based on the materials, we investigated fundamental and observable factors of team activities.
As a result, a method with three kinds of flow, say, communication, action, and position flow, is introduced.
Moreover, to examine the efficiency of the method, we tentatively evaluated some characteristics of team activities.

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