Pii: S0010-0277(99)00082-7

In three picture-word interference experiments we explore some properties of the semantic interference (SI) effect in the picture-word interference paradigm. In Experiments 1 and 2, we test whether SI may be obtained when the distractor words are not part of the response set and when only one picture per semantic category is included in the experiment. In Experiment 3, we explore if the magnitude of the SI effect depends on whether or not the distractor words are part of the response set. Reliable SI effects were obtained in all three experiments and the magnitude of the effect did not vary as a function of whether or not distractor words are part of the response set. These results are problematic for the selection mechanism in the WEAVER11 lexical access model (Levelt, W. J. M., Roelofs, A., & Meyer, A. S. (1999). A theory of lexical access in speech production. Behavioral and Brain Sciences. 22, 1±75; Roelofs, A. (1992). A spreading-activation theory of lemma retrieval in speaking. Cognition, 42, 107±142). q 2000 Elsevier Science B.V. All rights reserved.