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51.
The results of field research suggest that, contrary to being behaviorally inflexible, some amphibians may have the ability to respond effectively to changing environments. The performance of seven newts (Triturus viridescens) was studied across 20 successive reversals of a spatial discrimination problem in a dry T-maze. Submersion in shaded water served as reinforcement for correct responses. The subjects showed a decrease in mean errors across reversals and across ordinal trials within sessions. These results are discussed in terms of the importance of using biologically relevant methodologies in the study of comparative animal learning.  相似文献   
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Conclusion Activities along the lines of those suggested above can be planned for any food about which the children have little or no knowledge or for any food that is needed but not chosen by the group, such as green peppers. The number of activities planned for a food will, of course, reflect the interest of the children as well as that of the teacher or caregiver. The goal should be to foster positive attitudes about nutritious foods by helping children to acquire knowledge about foods through sensory experiences.  相似文献   
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The purpose of this study was to determine whether career aspirations, influences, and motives differ by class standing (freshman, sophomore, junior, and senior). A cross-sectional analysis of surveys completed by 204 criminal justice majors revealed a negative correlation between class standing and student interest in a law enforcement career (i.e. freshman and sophomores showed greater interest in a law enforcement career than juniors and seniors). Further analysis indicated that television and movies had a greater impact on the career aspirations of underclassmen, whereas teachers and professors had a greater impact on the career aspirations of upperclassmen. Motivational factors did not differ by class standing, however: students, regardless of class standing, reported that helping others and the interesting nature of the subject matter were their two strongest motives for seeking a criminal justice career and wearing a uniform and power were the two weakest motives for seeking a criminal justice career.  相似文献   
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Returning to the same stratified random sample of American colleges and universities studied by Cohen and March (1974) during the 1969–1970 academic year, the authors explore the extent to which theoretical estimates of attrition rates presented by Cohen and March predict recent presidential departures within their sample. They find that in the past four years (1971–1974) there has been little change in the attrition pattern among college presidents in this national sample. If there has been any change it is very small and in the direction of slightly longer tenure among presidents of large universities.  相似文献   
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This study describes the context for the development of a tool to formatively assess information technology skills of students. The tool provides a reliable and valid assessment of word processing competency, utilizing automation to apply the test instrument via the Microsoft Office package. Tests can be designed directly by tutors, and delivered via a network. Evaluation of the tests suggests that immediate automated testing is preferred by students compared to a traditional written test. There is evidence that the tool improves the IT skills of its users, whereas a traditional written test has no such beneficial effect.  相似文献   
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Past research with the Berkeley Adult Attachment Interview demonstrates that retrospectively defined earned-secures (who coherently describe negative childhood experiences) parent as effectively as do continuous-secures (who coherently describe positive childhood experiences), but manifest liabilities in the form of depressive symptomatology. This article presents data from a 23-year longitudinal study that replicate and extend prior research, testing a key premise that earned-secures so defined actually have a history of insecure attachments that change over time and/or endure consistently harsh or ineffective parenting in their youth. Discrepant with assumptions, retrospective earned-secures were not more likely than continuous-secures to have been anxiously attached in infancy and were observed in childhood and adolescence to have encountered among the most supportive and structured maternal parenting in a high-risk sample. Prospectively defined earned-secures (operationalized using participants' infant attachment classifications) did indeed go on to have success in their close relationships, many without reporting relatively high levels of internalizing distress in adulthood.  相似文献   
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Multimedia computer programmes have been found to facilitate learning in children with Autistic Spectrum Disorders (ASD). However, the effectiveness of these resources is limited due to poor design or a lack of consideration of the ASD cognitive profile, particularly at the lower functioning end of the spectrum. This article attempts to tackle the problem of the lack of design guidelines, with the aim of facilitating the development of effective educational programmes for children with severe ASD. The case study reported here evaluated two literacy educational computer programmes, by observing five low-functioning children with ASD, compared to five neurotypical children (control cases). The two types of reading-support software contrasted in the study presented different characteristics. The children’s data analysed here concern observations of child–software interactive sessions based on video recordings and coded for attention deployment to each programme, including motivation and engagement indicators.  相似文献   
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