Schema anticipation in recall: memory process or report strategy?

Summary This article reports an experimental investigation testing the hypothesis that recall reports are systematically biased by the recaller's knowledge about who is to receive the recall report, while that bias is absent from a recognition test. Subjects listened to one of two versions of a story recounting John's visit to the doctor. After the story was read, subjects were asked to recall the story either with standard-recall instructions or with instructions to recall for peers, for Martians, or for a contest. In a fifth condition, subjects performed a filler activity, viz., the recall of a personal experience. After the recall test subjects were administered a recognition test. Between the groups no systematic differences in memory performance were observed in the recognition test. Recall for peers appeared to be poorer than recall in the other conditions. Subjects in the recall for a contest condition scored higher than the subjects in the other groups. Not only did groups differ with respect to bias, but there were also systematic differences in the memory or discrimination scores. The findings are discussed within the framework of schema theory.     

Semantic operations deficits in sentence comprehension

Summary The ability of aphasic patients to comprehend sentences involving the combination of two linguistic operations was tested in a sentence/picture matching task. Sentences included affirmative, negative, uncompared and comparative types. Aphasic patients had significantly greater difficulty in understanding negative-comparative constructions than sentence types involving only a single operation. Comparison of the responses of the aphasic patients with data obtained in a perceptual comparison task revealed that a subgroup of patients had marked difficulty in integrating information in both tasks. The results are interpreted as an indication that some aphasic patients are especially disturbed in their ability to combine several operations in the construction of semantic representations for sentences. It is further argued that this deficit may extend to an inability to integrate information in the perceptual/spatial domain, as suggested by Luria in his discussion of the syndrome of semantic aphasia.The research reported here was supported by NIH research grant 14099 to The Johns Hopkins University. We would like to thank Dr. Annamaria Basili, Chief, Department of Audiology and Speech Pathology, Fort Howard Veterans Administration Medical Center, for permission to test the patients. We are indebted to the entire staff of that department for their continued cooperation, and for their many useful comments on the research reported. We also thank Michael Giordano, Conrad Selnick, and Susan Baisley for their assistance in data analysis. A version of this paper was presented at the annual meeting of B.A.B.B.L.E., Niagara Falls, Canada, March, 1979     

On the brightness of short and long flashes

The equation proposed by S. S. Stevens to describe the relations among brightness, intensity, and duration involves assumptions that are here made explicit. The equation is shown to apply to earlier studies designed to measure critical duration.     

SENSATIONS, SWATCHES, AND SPECKLED HENS

Abstract: We argue that there is a interesting connection between the old problem of the Speckled Hen and an argument that can be traced from Russell to Armstrong to Putnam that we call the “gradation argument.” Both arguments have been used to show that there is no “Highest Common Factor” between appearances we judge the same – no such thing as “real” sensations. But, we argue, both only impugn the assumption of epistemic certainty regarding introspective reports.