Acquisition and extinction of differential responses to signals paired with shock or shock omission in goldfish: Evidence for truly discriminated avoidance learning

Goldfish trained to discriminate between signals paired with shock (S?) and signals paired with shock omission (S+) with a linear presentation procedure, originally learned (OL) to control the signal state of a shuttle box and showed a decided preference for the S+ signal. In Experiment 1, following OL, groups had one OL signal replaced (S+ or S?), both signals replaced (S+ and S?), or the OL signals reversed (S+ and S? reversed) and were then tested in a transfer training procedure. In transfer, groups with one signal replaced maintained discriminated performance at OL levels; the S+ replaced group was slightly superior to the S? replaced group on the first day of transfer. With both OL signals replaced, discrimination dropped to chance performance levels, whereas, with OL signal shock pairing reversed, discrimination performance dropped below chance levels. In Experiment 2, following OL, extinction procedures consisted of turning off the shocker (0% shock) or of shocking 100% or a random 25% of the trials. A fourth extinction procedure (R,) retained the trial start response-dependent shock-omission contingency, but shock differentiating the S+ and S? signals was eliminated entirely. Extinction of the S+/S? discrimination was measured both during extinction training per se and with reversal retraining of the S+/S? discrimination later. Groups for which the OL S+ was paired with shock during extinction extinguished on both measures, but groups for which the OL S? was paired with shock omission did not extinguish, especially as shown by the reversal test procedure. Theoretical implications and the implications for several conditioning procedures are discussed.     

Netskills and the current state of beliefs and practices in student learning: an assessment and recommendations

This article analyses data from over 1000 student questionnaires dealing with how students currently use the web to support their learning. It discusses student understanding, needs, and expectations of the web and the overwhelming perception that the web now forms an integral part of their study and research practices. However, these practices require greater definition and refinement for and by the student. Evidence from some teaching staff is compared with that from students for validation purposes and has also revealed striking differences in perception and attitudes between the two groups. We identify specific needs on the part of most students in our survey who require greater guidance and study skills when using the web. These “Netskills” are described and recommendations are made concerning their acquisition and future development by students who are demanding that such skills become part of their own learning strategies.     

The development of subjective group dynamics: children's judgments of normative and deviant in-group and out-group individuals

A developmental model of subjective group dynamics suggests that social identity is sustained first by intergroup biases and later by intragroup biases. In this study 476 English children 5 to 11 years old evaluated the English and German soccer teams, and judged in-group or out-group members whose attitudes toward the teams was normative versus antinormative. Children of all ages expressed intergroup bias. Differential evaluation against in-group deviants and in favor of out-group deviants strengthened with age. Understanding of targets' relative acceptability (differential inclusion) among in-group and out-group members mediated the effects of age and intergroup bias on intragroup bias. Identification with the in-group moderated the effects only among older children.     

Teaching structured troubleshooting: integrating a standard methodology into an information technology program

Troubleshooting skills are integral for the Information Technology professional. In order to address faculty concerns that students were not effectively learning required troubleshooting skills, a standardized troubleshooting methodology (the DECSAR Method) was created and integrated into the standard curriculum of a college information technology program. Components of troubleshooting were measured using a pre-/post-testing approach with the Social Problem Solving Inventory—Revised. Testing indicated improvement in several areas of troubleshooting reinforced by DECSAR. The context in which the troubleshooting methodology was applied was associated with post-test change.

Contract cheating in UK higher education: A covert investigation of essay mills

Contract cheating is currently a concern for universities and the higher education (HE) sector. It has been brought into the spotlight in recent years through the growth of online essay mills, where students can easily commission and purchase written assessment responses. This study contributes to the wider literature on academic integrity in HE by examining the phenomenon of contract cheating from a supply‐side perspective, thereby considering the essay mill offering and student interaction with it. The authors covertly engage with five essay mills, before successfully completing an assignment purchase with two of these providers. The pre‐purchase stage of an assignment transaction is first examined, unpacking ten reassurance cues used by essay mill providers in the text of their websites. These reassurance cues help to ensure the attractiveness of the essay mill product to potential student consumers. The analysis then moves to explore the ethical discourses around academic integrity that essay mills provide, revealing inconsistencies in their stance towards the potential for academic misconduct from the use of essay mill services. Finally, the article explores the quality of the essay mill product, through grading and Turnitin^® reports for the two purchased essay mill assignments. Following recent calls for the outlawing of essay mills, this article provides a timely addition to current understanding of this phenomenon, and the associated challenges of contract cheating in HE.     

Effects of bicycle frame ergonomics on triathlon 10-km running performance

It is perceived that, during the triathlon or duathlon, cycling with a steep (>76°) rather than a shallow (?76°) frame geometry might attenuate the fatigue associated with progression from the cycle to run disciplines and improve subsequent 10-km running performance. This is based on anecdotal testimony from athletes purporting to have experienced improved performance; no empirical evidence exists. To evaluate this view, eight male triathletes completed a counterbalanced, 40-km cycle ride at two frame geometries (73° and 81°) at ~70% VO 2peak . Immediately after completion of each 40-km cycle, a self-paced 10-km treadmill time trial was undertaken, during which physiological, kinematic and performance variables were measured. The 10-km run performance (mean - s : 42:55 - 4:19 vs 46:15 - 4:52 min; P ? 0.01) and combined cycle and run performance (1:45:49 - 5:45 vs 1:50:33 - 6:08; P ? 0.001) were faster in the 81° than the 73° condition. Improvements in performance were most prominent during the first 5 km of the run (21:41 - 2:15 vs 24:15 - 2:31 min in the 81° and 73° conditions respectively). These improvements were not evident during the second 5 km of the run. No differences in physiological variables were noted, although heart rate, stride length and stride frequency were increased during the 81° condition ( P ? 0.05). Modifying frame geometry from a seat tube angle of 73° to 81° improves 10-km running and combined cycle plus run performance. These improvements in performance might relate to alterations during the cycling phase, which minimizes the 'residual effect' of this (i.e. the adverse changes in substrate availability, thermoregulatory, cardiovascular and biomechanical factors felt immediately after transition from cycling to running) and attenuates negative changes in physiological and kinematic responses during the 10-km run.     

The impact of culture contact and desegregation on the whites of an urban high school

Conclusion Desegregation has generally been presented as an outgrowth of the civil rights movement and as an attempt to redress the educational disadvantages blacks have suffered as the result of a racial imbalance. Given the general theoretical considerations of resource allocation, the assumption has been that reallocations of resources to blacks would necessarily mean reallocation of these resources to blacks from whites. This view is also part of the popular culture where the process of desegregation has caused turmoil and disturbance among whites based, manifestedly at least, on the notion that improving educational benefits for blacks necessarily means a reduction in the same benefits for whites.Based on an analysis of the experiences of teachers and students at one polyethnic inner-city high school, we suggest that not only have whites at this school not been disadvantaged by the desegregation process but that there is evidence indicating that there have been more advantages for whites than for blacks. What, then, are the advantages of desegregation for whites, both students and teachers? In this school it was found that the advantages differed for white students and for white teachers, with white students experiencing more positive outcomes than white teachers experienced.     

Becoming an Architect: The Role of Work-Based Learning in Architect Training

This article examines the work-based placements of trainee architects in the United Kingdom to examine how trainees become architects. The trainee architects in this study experienced varying levels of participation and responsibility during their yearlong placements. Despite this diversity, developing the trainees on placement was found to be integral to the professional role of the architect. The university-based element of architecture training focused almost exclusively on abstract design while their placements involved practical problem-solving. However, the apparent tension between these elements encouraged the trainees to integrate architectural theory and practice while on placement so they developed both aesthetically and technically. Moreover, the trainees’ presence in the studios helped to nurture fresh design and so helped to feed the central design core of architectural practice. Nevertheless, the trainees’ experience of working in an architectural studio on placement often confounded their expectations of architects’ practice. Yet, becoming an architect retained its personal significance. Issues remain, though, around the unequal access to opportunities on placement and how this inequality might affect trainee architects’ learning.