Shehuo is one of the traditional and ancient customs in northern China. Shehuo includes many factors such as historical factor, cultural factor and psychological factor.

社火是中国北方传统而又古老的民间习俗之一，社火包含着历史的、文化的、心理的诸多因素。

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The creative talent in fine arts is composed of various kinds of abilities and series of factors, among which the psychological factor is a major one in cultivating the creative talent in painting.

绘画的创造才能是由多种能力、多种因素构成的，心理因素是其中重要因素之一。

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Carcinogenic mechanism of psychological factor.

心理因素致癌的机制。

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Some of these measures are in my view security-theater, with little real effect other than the psychological factor and appearance of invincibility of our airport checkpoints.

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But there is also a psychological factor.

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But perhaps even more a factor than medical conditions are psychological concerns.

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