Morphemic and phonemic factors in letter cancellation

A letter cancellation task was employed to examine whether a prelexical phonological representation is an essential component of the normal reading process. In the cancellation of letter e s in the ed affix attached to the past tense forms of English regular verbs, there was no evidence that detection performance was influenced by the pronunciation of the target letter. In Experiment I, instructions to remember the content of the text had no effect upon performance, and any effects of instructions to read the text aloud were attributable to a speed-accuracy trade-off. In Experiment II, there was no evidence that articulatory suppression affected the normal reading process. Although aspects of performance in letter cancellation may be contaminated by task-specific scanning strategies, the present findings permit one to conclude that normal reading employs a direct, nonphonological means of lexical access.     

Stimulus generalization of conditioned taste aversion in rats

Relatively little information is available regarding the intradimensional stimulus generalization of conditioned taste aversion (CTA). Experiment 1 employed a between-groups generalization test to examine the extent to which conditioned flavor aversion to one sucrose solution generalized to other concentrations of sucrose in adult rats. Evidence of a gradient of aversion was obtained. Because generalization gradients in other tasks have been found to flatten over a retention interval, Experiment 2 investigated the effects of delayed testing (2, 7, or 21 days) upon the slope of the generalization gradient. The generalization gradient flattened at the intervals, suggesting that subjects forgot the specific attributes of the conditioning concentration and avoided generalized stimuli as if they were the original CS. Experiment 3 used a long delay between taste and toxicosis to degrade the associative contingency and found no evidence that the generalization gradients found in the first two experiments could be explained in terms of enhanced neophobia due to poisoning. These findings provide further evidence (cf. A. W. Logue, 1979, Psychological Bulletin, 86, 276-296; M. Domjan, 1980, in J. S. Rosenblatt, R. A. Hinde, C. Beer, & M. Busnel (Eds.), Advances in the study of behavior, Vol. 11, New York: Academic Press) that CTA shares a number of similarities with other learning processes. Further, they illustrate that stimulus forgetting can be detected in a paradigm considered relatively immune to retention loss.     

INTELLIGENCE: PAST AND FUTURE

In this paper it is argued that enquiry concerning intelligence in the 20th century has been dominated by a particular theory which we call the ‘strength’ model of intelligence. After briefly considering the history of the strength model we argue that this dominance has severely distorted the logic of research programmes in the area of intelligence, resulting in the crisis of professional uncertainty and public confidence which we currently find ourselves in. Various illustrations of this distortion of logic are considered in three areas of research, (i) the construction of intelligence tests; (ii) enquiry into the ‘structure’ of intelligence; (iii) nature-nurture research. We go on to examine alternatives to the strength model, and then make a plea for a wider and deeper consideration of concept formation, and concept usage, as the basis of a ‘polyphenic’ cognitive system. Some of the implications of this consideration for the nature of future research programmes are also discussed.     

Precategorical acoustic storage and postcategorical lexical storage

A variety of experimental findings have indicated that a system of precategorical acoustic storage is responsible for the recency effect obtained in the immediate serial recall of sequences of digits, consonants, or syllables. This study investigated whether such findings could be generalized to the recall of sequences of words. Experiment 1 showed that phonemic similarity among a sequence of words failed to reduce the modality effect or the recency effect. Experiment 2 demonstrated that this finding was not attributable to a failure to control the phonemic properties of the stimulus material. Experiment 3 showed that the stimulus suffix effect obtained with sequences of words was not affected by the acoustic similarity between the list items and the stimulus suffix. Finally, Experiment 4 demonstrated that phonemic similarity among a sequence of words failed to reduce the stimulus suffix effect. These results were explained by extending the original model of short-term memory to incorporate a system of postcategorical lexical storage.     

The Miyagi Method: a new vision for religious educators

This article proposes and develops an analysis of Mr Miyagi's educational philosophy in The Karate Kid. It suggests that this fictional tale, this story of an especially intense learning experience, captures and expresses an important synthesis of both traditional and more recent developments in educational theory, and that it also points the religious educator into a new realm of considerations. After a brief introduction, the author considers two influential scenes from the film and discusses four prominent Miyagi standards. Through these general principles, and through a look at the resource selection methods used, the author links the method under investigation to the ‘sage‐disciple’ pattern of study and reflects on the usefulness of this approach for contemporary religious educators.     

Social Beliefs and Visual Attention: How the Social Relevance of a Cue Influences Spatial Orienting

We are highly tuned to each other's visual attention. Perceiving the eye or hand movements of another person can influence the timing of a saccade or the reach of our own. However, the explanation for such spatial orienting in interpersonal contexts remains disputed. Is it due to the social appearance of the cue—a hand or an eye—or due to its social relevance—a cue that is connected to another person with attentional and intentional states? We developed an interpersonal version of the Posner spatial cueing paradigm. Participants saw a cue and detected a target at the same or a different location, while interacting with an unseen partner. Participants were led to believe that the cue was either connected to the gaze location of their partner or was generated randomly by a computer (Experiment 1), and that their partner had higher or lower social rank while engaged in the same or a different task (Experiment 2). We found that spatial cue‐target compatibility effects were greater when the cue related to a partner's gaze. This effect was amplified by the partner's social rank, but only when participants believed their partner was engaged in the same task. Taken together, this is strong evidence in support of the idea that spatial orienting is interpersonally attuned to the social relevance of the cue—whether the cue is connected to another person, who this person is, and what this person is doing—and does not exclusively rely on the social appearance of the cue. Visual attention is not only guided by the physical salience of one's environment but also by the mental representation of its social relevance.     

Accuracy and repeatability of the Yale physical activity survey in assessing physical activity of older adults.

The purpose of this study was to extend the initial evaluation of the Yale Physical Activity Survey to assess physical activity in older adults. The survey yields three indicators of physical activity reflecting activities performed during a typical week of the previous month (Total Time, Total Energy Expenditure) and the past month (Total Activity Summary Index). Questionnaire validity was studied in 56 men and women, ages 56 to 86 years, by comparing the average of 3- or 7 day 24-hr. physical activity records (n=56), predicted maximal oxygen consumption (VO2 max) (n = 23) and the sum of three skinfold measurements. Two-week repeatability was estimated by calculating an intraclass coefficient using an analysis of variance with repeated measures. Spearman rhos were used to study questionnaire validity. Analysis showed the survey was easily administered and scored and exhibited moderate-to-good repeatability. For the first administration the Total Energy Expenditure Index was significantly associated with the physical activity diary (r = .27). On the second administration, correlations were significant for the physical activity diary with the Total Energy Expenditure Index (r = .30), the Total Activity Summary Index (r = .36), and the Total Time Index (r = .27), and for VO2 max and the Total Time Index (r = .49) and Total Activity Summary Index (r = .64). Relative to the criterion measures used in this study, some validity was evident for the second administration in this relatively active and healthy sample of older adults.     

Argumentation in School Science: Breaking the Tradition of Authoritative Exposition Through a Pedagogy that Promotes Discussion and Reasoning

The value of argumentation in science education has become internationally recognised and has been the subject of many research studies in recent years. Successful introduction of argumentation activities in learning contexts involves extending teaching goals beyond the understanding of facts and concepts, to include an emphasis on cognitive and metacognitive processes, epistemic criteria and reasoning. The authors focus on the difficulties inherent in shifting a tradition of teaching from one dominated by authoritative exposition to one that is more dialogic, involving small-group discussion based on tasks that stimulate argumentation. The paper focuses on how argumentation activities have been designed in school science. Examples of classroom dialogue where teachers adopt the frameworks/plans are analysed to show how argumentation processes are scaffolded. The analysis shows that several layers of interpretation are needed and these layers need to be aligned for successful implementation.