Inhibition of return in discrimination tasks

Although inhibition of return is known to affect a wide range of detection tasks, it has not been found consistently in discrimination tasks. To examine this issue, 5 experiments were conducted in which participants discriminated between a visual target and a distractor. The responses were not inhibited if, before the onset of stimuli, attention had been overtly oriented (i.e., an eye movement was made) to the future target location and the stimulus at that location was the same symbol as the upcoming target. However, if attention was covertly oriented (i.e., no eye movement was made) to the future location of the target, or if the stimulus at the earlier attended location was a symbol different from the target, responses to the target were inhibited. Overall, the findings provide insights into the relation between movements of attention and discrimination judgments and support the notion that inhibition of return is an attentional phenomenon.     

Four programs of research in scientific communication

Selected studies of scientific communication, philosophy and sociology of science, sociology of knowledge, and information science are reviewed according to the assumptions they make about scientific information. Based on these assumptions and their historical order of development, the studies are organized into four distinct “programs” of research: artifact studies, user studies, network studies, and laboratory studies. The four programs represent a continuum of definitions of information, from the information-as-commodity definition that is embodied in the artifact studies, to the contextual, meaning-based definition that is characteristic of the laboratory studies. They also provide a rich framework for a renewal of research interest in this area among communication scholars and others interested in the social impacts of information. “When I studied scientific communication back in the sixties, it was a great field to be in ... we thought we knew just about everything there was to know about scientific communication.”¹ Bill Paisley, 1985 Leah A. Lievrouw is assistant professor in the Department of Communication at Rutgers University. Dr. Lievrouw received her PhD from the Annenberg School of Communications at the University of Southern California. Her research interests include scientific communication and the social aspects of telecommunications technologies.     

Exploring Pietism as an Intermediary for Lutheran‐Pentecostal Dialogue

The authors, a Lutheran and a Pentecostal, explore similarities and differences between their respective traditions using German Lutheran Pietism as a bridge. Parallels include conversionism, devotion to the Bible, practical holiness, missional activism, and opposition to the shortcomings of the religious status quo. Key divergences between the movements include the role of the sacraments, the place of manifestational gifts, and eschatology. The authors highlight how Pietism can be a useful channel and translator for dialogue.     

Investigating the relationship between bilingualism,cognitive control,and mind wandering

Some research has suggested that bilingualism produces cognitive control advantages, although it has recently been shown that reported advantages are influenced by a publication bias. If the bilingual (BL) advantage does exist, the specific causes and contexts for its appearance remain unclear. The purpose of the current study was twofold: one, to examine performance of BLs and monolinguals (MLs) on a variety of simple versus complex cognitive control tasks; and two, to determine whether there were language group differences in the tendency to mind wander, which has been heavily implicated in cognitive control tasks. Although we hypothesised that if BLs outperformed MLs on cognitive control tasks, this would be associated with less mind wandering for BLs, the results did not reveal any BL advantages or any differences in mind-wandering tendencies. These findings support calls to temper BL advantage claims and shows a need for future research to better specify which underlying factors of cognitive control may be optimised by multilingualism.     

Guessing Strategies, Aging, and Bias Effects in Perceptual Identification

In the typical single-stimulus perceptual identification task, accuracy is improved by prior study of test words, a repetition priming benefit. There is also a cost, inasmuch as previously studied words are likely to be produced (incorrectly) as responses if the test word is orthographically similar but not identical to a studied word. In two-alternative forced-choice perceptual identification, a test word is flashed and followed by two alternatives, one of which is the correct response. When the two alternatives are orthographically similar, test words identical to previously studied items are identified more accurately than new words (a benefit) but tests words orthographically similar to studied words are identified less accurately than new words (a cost). Ratcliff and McKoon (in press) argue that these are bias effects that arise in the decision stage of word identification. We report five experiments that examined the alternative hypothesis that these bias effects arise from postperceptual guessing strategies. In single-stimulus perceptual identification, repetition priming benefits were equally great for young and older adults who claimed to use deliberate guessing strategies and those who did not (Experiment 1). In contrast, only groups of young and older people who claimed to deliberately guess studied words in a two-alternative forced-choice task (Experiments 2 and 5) showed reliable benefits and costs. Costs and benefits were abolished in the two-alternative forced-choice task when a very long study list was used, presumably because the increased retrieval burden made the use of deliberate guessing strategies less attractive (Experiment 3). Under conditions similar to those of Experiment 3, repetition priming was observed in single-stimulus perceptual identification (Experiment 4). These results are consistent with the view that costs and benefits in the forced-choice perceptual identification task arise from deliberate guessing strategies but that those in the single-stimulus task do not. The possibility that the observed relationship between strategy reports and priming effects reflects erroneous postexperimental assessments of strategies by participants is also considered.