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.
Yip at RootsWeb databases. Yip in RootsWeb surname mailing lists. Yip genealogy mailing list for correspondence and sharing of information pertaining to family histories of the Yip surname and its variations. Or check the index of mailing lists for a sound-alike name.