Attribute coding at different levels of processing

Schoolchildren, aged 16 years showed poorer incidental learning for nouns if the orienting task was one of finding rhymes for the items compared to assigning each word to a semantic category. On a recognition task including homophone and synonym foils, rhyming subjects made significantly more phonemic errors, whereas categorizing subjects produced a significantly greater number of semantic confusions. Subjects instructed to construct images for each of the nouns showed a performance pattern similar to the categorizing group. The results are interpreted in terms of Herriot's (1974) view that different levels of processing are associated with the coding of different clusters of stimulus attributes.     

Spreading activation versus compound cue accounts of priming: mediated priming revisited.

Spreading activation theories and compound cue theories have both been proposed as accounts of priming phenomena. According to spreading activation theories, the amount of activation that spreads between a prime and a target should be a function of the number of mediating links between the prime and target in a semantic network and the strengths of those links. The amount of activation should determine the amount of facilitation given by a prime to a target in lexical decision. To predict the amount of facilitation, it is necessary to measure the associative links between prime and target in memory. Free-association production probability has been the variable chosen in previous research for this measurement. However, in 3 experiments, the authors show priming effects that free-association production probabilities cannot easily predict. Instead, they argue that amount of priming depends on the familiarity of the prime and target as a compound, where the compound is formed by the simultaneous presence of the prime and target in short-term memory as a test item.     

Jesuit Sensuality and Feminist Bodies

The stated goal of Donna Haraway's "Cyborg feminism" is to liberate sensuality from violence. In examining her book alongside that of Jesuit Toletus it becomes clear that both argue that sensuality is a place of metaphysical violence. The first two sections of the essay demonstrate this, and, in addition that Toletus' commentary on Aquinas is hardly accurate. This fact will help justify the claim that the Jesuit tradition includes a rather particular theory of sensuality, the origin of which is perhaps Giles of Rome. A third section shows how the Jesuit Gaston Fessard rediscovered Aquinas' own theory of sensuality through a thoroughgoing critique of Hegelian and Marxist dialectic. The essay concludes that Haraway would do well to adopt Aquinas' non-violent theory of sensuality as her own.     

Back to Basics: Application of the Principles of Bioethics to Heritable Genome Interventions

Science and Engineering Ethics - Prior to their announcement of the birth of gene-edited twins in China, Dr. He Jiankui and colleagues published a set of draft ethical principles for discussing the...     

Volume Contents

Volume Contents

Volume Contents     

Clients' perspectives on problems many years after traumatic brain injury

This study investigated the types of self-reported main problems that persons report many years following a traumatic brain injury. This preliminary study is part of a large ongoing study of disability and handicap in adults following traumatic brain injury. As part of an extensive interview, subjects were asked an open-ended question regarding their current main problems which they thought resulted from their traumatic brain injury. Responses were obtained from 166 adult subjects (119 men and 47 women) whose time postinjury ranged from 9 to 24 years. Categories for responses were subsequently developed. The most commonly reported categories of problems were those relating to movement (39%), cognition (36%), and sensory impairment (31%). Findings suggest that subjects' long-term concerns were related to specific impairments more than to psychosocial, emotional, or behavioral issues. Methodological issues concerning this research are discussed in relation to findings.     

Modeling the effects of repetition and word frequency in perceptual identification

The counter model for word identification (Ratcliff & McKoon, 1997) has been challenged by recent empirical findings that performance on low-frequency words improves as the result of repetition of the words. We show that the model can accommodate this learning effect, and that it can do so without jeopardizing its explanations of the effects on word identification of a large number of other variables.     

Configural processing and perceptions of head tilt

Configural processing is important for face recognition, but its role in other types of face processing is unclear. In the present study, participants made judgments of head tilt for faces in which the vertical position of the internal facial region was varied. We found a highly reliable relationship between inner-face position and perceived head tilt. We also found that changes in inner-face position affected the perceived dimensions of an individual unchanged facial feature: compared to control faces, nearly two-thirds of faces in which the features had been moved down were judged to have a longer nose. This finding suggests an early integration of configural and featural processing to create a stable holistic percept of the face. The demonstration of holistic processing at a basic perceptual level (as opposed to during face recognition) is important as it constrains possible models of the relationships between featural and configural processing.     

Human cognition and a pile of sand: a discussion on serial correlations and self-organized criticality

Recently, G. C. Van Orden, J. G. Holden, and M. T. Turvey (2003) proposed to abandon the conventional framework of cognitive psychology in favor of the framework of nonlinear dynamical systems theory. Van Orden et al. presented evidence that "purposive behavior originates in self-organized criticality" (p. 333). Here, the authors show that Van Orden et al.'s analyses do not test their hypotheses. Further, the authors argue that a confirmation of Van Orden et al.'s hypotheses would not have constituted firm evidence in support of their framework. Finally, the absence of a specific model for how self-organized criticality produces the observed behavior makes it very difficult to derive testable predictions. The authors conclude that the proposed paradigm shift is presently unwarranted.     

Acquired distinctiveness and equivalence in human discrimination learning: Evidence for an attentional process

In a first stage of training, participants learned to associate four visual cues (two different colors and two different shapes) with verbal labels. For Group S, one label was applied to both colors and another to both shapes; for Group D, one label was applied to one color and one shape, and the other label to the other cues. When subsequently required to learn a task in which a given motor response was required to one of the colors and one of the shapes, and a different response to the other color and the other shape, Group D learned more readily than Group S. The task was designed so that the associations formed during the first stage of training could not generate differential transfer to the second stage. The results are consistent, however, with the proposal that training in which similar cues are followed by different outcomes will engage a learning process that boosts the attention paid to features that distinguish these cues.