The scientific beliefs of activity teaching really originate in dynamic psychology and genetic psychology in19th century and20th century.

真正给活动教学以科学信念的是19世纪末、20世纪初的动力心理学和发生心理学。

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Just like people have a genetic code, perhaps, that gives us various instructions that we begin to follow out, or certain innate psychology or what have you.

就像人类拥有基因编码,给我们传达各种各样,得以遵循的指示,或者是某种与生俱来的心理,等等等等

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Dr. Samuel Putnam , an assistant professor of psychology at Bowdoin College in Maine, says thrill seeking behavior is mostly genetic, and that signs of it--from climbing the highest tree to swinging as high as possible on a swing set--can be recognized from very early ages.

FORBES: World's Most Dangerous Races

The desire to fly an airplane has been shown to represent one aspect of a sensation-seeking personality, a genetic trait associated with risky behavior involving driving, sex, sports and vocation, according to psychology studies.

WSJ: Executive No-Fly Zone? When a CEO's Thrill-Seeking Rattles the Board