Factors affecting developmental changes in the speed of processing

Although many studies have found developmental changes in the speed of various processes, they have potentially confounded the subject's age with his knowledge of the task domain and use of strategies. In this study, the strategies used by the subject and his domain knowledge were independently assessed by a number of tasks. Subsequently, processing rate measures were obtained for a task (the “same/different” judgment task of simultaneously presented stimuli) in which domain knowledge was manipulated independently of age while controlling for strategy usage. It was found that the usual adult superiority in speed of processing could be markedly reduced if children possessed equivalent amounts of domain knowledge and this effect was domain specific. Further, it was found that differences in knowledge affected processing rates in both knowledgeable adults and children and to about the same extent. It was concluded that some part of the typical adult superiority in processing rate was due to knowledge differences.     

The halo effect revisited: Forewarned is not forearmed

The purpose of the present research was to determine if forewarning subjects about the halo effect eliminated the effect or made people aware of its impact. The research was a replication and extension of R. E. Nisbett and T. D. Wilson's (Journal of Personality and Social Psychology, 1977, 35, 250–256) experiment on the halo effect. Subjects viewed an interview of a college instructor who was either warm or cold and then rated his physical appearance, mannerisms, and French accent. Some subjects were told to introspect about their cognitive processes while viewing the interview and were told that the purpose of the study was to see how aware they were of the determinants of their ratings. Other subjects were also told specifically what the halo effect was and given a motivation either to show it or not to show it. In addition, a measurement technique different from that used by Nisbett and Wilson was utilized to allow a more precise measurement of awareness, and a new cover story was used to make the task more involving and important to subjects. Despite these attempts to eliminate the halo effect (or, at a minimum, to make people aware of it), the results indicated that subjects in all conditions were very susceptible to it. That is, subjects who viewed the warm version of the interview rated the instructor's appearance, mannerisms, and accent significantly higher than did those who viewed the cold version, even when informed and forewarned about this effect. The forewarning and introspection instructions also had no impact on subject's awareness of the halo effect. Subjects in all conditions indicated that their liking for the instructor had had only a minimal effect on their ratings.     

Task-hemispheric integrity in dual task performance

A condition of task hemispheric integrity is predicted to result in a dual task situation when the central processing and response components of each task are associated exclusively with a given cerebral hemisphere. The prediction that this condition will generate more efficient time-sharing is tested in a series of four experiments. In experiment 1 the prediction is confirmed when a spatial (tracking) and verbal (letter memory search) task are time-shared, and the hand assignment to task responses is manipulated. In experiment 2 a spatial variant of the memory search is used instead of the verbal letter search, and hand assignment effects are not obtained, since when two spatial tasks are time-shared an integrity assignment is impossible. Experiment 3 validates the hemispheric lateralization of the two single task variants of the memory search task, while experiment 4 establishes the separate “spatial’ and “verbal” resource demands of the two variants by observing their differential interference with concurrent spatial and verbal tasks.     

Creativity and the artwork: the perspectives of a painter and a philosopher

Creativity in Robert Henri's view is a gratuitous act, shot through with mystery; what is left after such an act is the artwork itself as concrete evidence that such a heightened state of consciousness has been achieved. This paper will examine Henri's understanding of the nature of creativity from his perspective as a twentieth century New York painter, in conjunction with Eliot Deutsch's theoretical insights as a philosopher deeply interested in the nature of the experience of an artwork. In his Essays on the nature of art, Deutsch presents the view that the experience of an artwork involves the assimilation of the work's aesthetic force, the recognition of its meaning, the discernment of its formal dimensions, and ‘calls for a special appropriation that yields an integrated wholeness’. This paper presents commonalities between Henri's and Deutsch individual perspectives and discusses some value‐centred educational implications that could be drawn from these commonalities.     

Diachronic Dutch Books and Sleeping Beauty

Hitchcock advances a diachronic Dutch Book argument (DDB) for a 1/3 answer to the Sleeping Beauty problem. Bradley and Leitgeb argue that Hitchcock’s DDB argument fails. We demonstrate the following: (a) Bradley and Leitgeb’s criticism of Hitchcock is unconvincing; (b) nonetheless, there are serious reasons to worry about the success of Hitchcock’s argument; (c) however, it is possible to construct a new DDB for 1/3 about which such worries cannot be raised.     

Evolution,Suffering, and Eschatological Redemption: Sollereder,Southgate, and Russell on Theodicy

Two new books helpfully refine the position vaunted by Theistic Evolution. These two books will garner the interest especially of the proleptic school within Theistic Evolution, which affirms (1) the long history of evolution as God's creative work; (2) the Theology of the Cross wherein God shares in the sufferings and even death of all creatures, animals included; (3) Jesus’ Easter resurrection as a prolepsis of the eschatological new creation; and (4) the coincidence of creation with redemption. These two provocative new works are Bethany Sollereder's God, Evolution, and Animal Suffering: Theodicy without a Fall, along with Christopher Southgate's Theology in a Suffering World: Glory and Longing. This article tackles a problem surfacing in the work of both Sollereder and Southgate: when eliminating the fall, the combination of redemption and creation becomes incoherent. Robert John Russell's “fall without a fall” provides greater coherence in the proleptic version of Theistic Evolution.