a stimulus that is just strong enough to elicit a response. unconditioned stimulus. any stimulus that is capable of eliciting an unconditioned response. See also conditioning. unstructured stimulus. an unclear or ambiguous stimulus, the perception of which is influenced to a greater extent by the characteristics of the perceiver than by those of the stimulus.
Yip, YIP, or yips may refer to: Yip (nickname), a list of people. Ye (surname), a Chinese surname also romanized as Yip (è), including a list of people.
Living mainly in the hillside and basin areas in Yunnan, Sichuan, and Guizhou Provinces together with the northwestern part of Guangxi Zhuang Autonomous Prefecture, Yi ethnic group is reputed as a nation with a long history and splendid culture within South Western China.