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.
Last name: Lacy. This is a noble English and sometimes Irish surname, but one of ultimately Norman-French origins. It originates from the town of Lassy in Calvados, France, and the original name holders came to England with the army of William, Duke of Normandy in 1066.