Factors in Salt and Pepper Passage: A Further Critical Report on the State of the Art

From Pencil's (1976) and Pacanowsky's (1978) [1,2] subtle reviews on the rather trite-sounding issue of what causes salt to be passed, a number of internal and external factors seem to be important. Although they recommended further research, it was only recently that three studies were published [3]. This paper summarizes that research, reviews three newer studies, and offers critical comments on this intriguing literature.