Amplitude of the rabbit’s unconditioned nictitating membrane response in the presence of a conditioned inhibitor

Using a light or backshock as the reinforced CS (A) and a tone or backshock as the conditioned inhibitor (X), rabbits experienced conditioned inhibition training in an A+/AX? paradigm. Following training, the amplitude of the unconditioned nictitating membrane response elicited by a mild (.5-mA) paraorbital shock was measured in the presence of X and AX and expressed as a percentage of the amplitude of the UR to the shock presented alone. In Experiment 1, the effect of X and AX on UR amplitude for conditioned inhibition animals was compared with that of control animals treated to a variety of pretest procedures. In general, UR amplitude in the presence of X exceeded that observed to the US presented alone. There was no consistent difference between the experimental and control groups. In Experiments 2–5, A test trials were added as an alternative reference point. Again, UR amplitude increased rather than decreased UR amplitude. In addition, X as a conditioned inhibitor enhanced the facilitating effect of A on UR amplitude in four out of five experiments. These findings have implications for theories of the “locus of action” of conditioned inhibitors.     

Comparing the epistemological underpinnings of students' and scientists' reasoning about conclusions

This study examined the criteria that middle school students, nonscientist adults, technicians, and scientists used to rate the validity of conclusions drawn by hypothetical students from a set of evidence. The groups' criteria for evaluating conclusions were considered to be dimensions of their epistemological frameworks regarding how knowledge claims are justified, and as such are integral to their scientific reasoning. Quantitative and qualitative analyses revealed that the responses of students and nonscientists differed from the responses of technicians and scientists, with the major difference being the groups' relative emphasis on criteria of empirical consistency or plausibility of the conclusions. We argue that the sources of the groups' differing epistemic criteria rest in their different spheres of cultural practice, and explore implications of this perspective for science teaching and learning. © 2001 John Wiley & Sons, Inc. J Res Sci Teach 38: 663–687, 2001     

Reform first and ask questions later? The implications of (fast) schooling policy and ‘silver bullet’ solutions

This article explores the uptake of so-called fast policy solutions to problems in different education policy contexts and highlights the potential impacts that can arise from such policymaking approaches. We draw upon recent literature and theorising around notions of fast policy and evidence-informed policymaking, which suggests that, in an increasingly connected, globalised and temporally compressed social world, policymaking has become ‘speeded up’. This means that policymaking is now largely predicated upon looking around to foreign reference societies to borrow ‘ideas that work’, thereby encouraging particular forms of evidence, expertise and influence to dominate. We focus on three different examples of fast policy schooling documents – namely the OECD’s PISA for Schools report, the edu-business Pearson’s The Learning Curve and an Australian state (New South Wales) education department report entitled What Works Best – to show how all three documents promote an overly simplified, decontextualised and ‘one-size-fits-all’ understanding of schooling policy. This reflects what we describe as a ‘convergence of policy method’ across vastly different policy contexts (an IGO, global edu-business and government department), in which similarly fast policies, and methods of promoting such policies, appear to dominate over potentially more considered and contextually aware policymaking approaches.     

Predicting Singapore students' achievement goals in their English study: Self-construal and classroom goal structure

This study examined the role of self-construal and classroom goal structure in predicting Singapore secondary students' achievement goals in their English study. Students from 104 classes were administered surveys of achievement goals, classroom goal structure, English self-concept, and self-construal. The results of two-level hierarchical linear modeling showed that after controlling for gender, previous English achievement, and English self-concept, interdependent self-construal significantly predicted mastery approach and avoidance goals, while independent self-construal was associated with performance approach, performance avoidance, and mastery approach goals. Mastery classroom goal structure predicted mastery approach and avoidance goals, whereas performance classroom goal structure predicted performance approach and avoidance goals as well as mastery avoidance goals. In addition, students with interdependent self-construal in classrooms with a performance focus were more likely to endorse mastery approach, mastery avoidance, and performance avoidance goals, while students with independent self-construal in classrooms with a performance focus tended to have performance approach goals. This study provides validation for the 2 × 2 framework of achievement goals, and advances our knowledge of how students adopt multiple goals. The findings are related to the educational achievement context of Singapore.     

Delayed matching in the pigeon: Interference produced by the prior delayed matching trial

Pigeons’ delayed matching performance on Trial n was examined as a function of whether the correct and incorrect comparison stimuli from Trial n?1 were maintained in the same role on Trial n (positive transitions), were reversed in role on Trial n (negative transitions), or were absent on Trial n (neutral transitions). Relative to neutral transitions, positive transitions did not significantly facilitate performance. Negative transitions, however, produced significant proactive interference on Trial n, and the magnitude of proactive interference was greater when the Trial n retention interval was 1 sec than when it was 0 sec. As the intertriai interval increased from 2 to 10 sec, the amount of interference dissipated. The results suggest that a prior delayed matching trial can serve as a significant source of forgetting but not a significant source of facilitation on an immediately following delayed matching trial.