Memory for number of light flashes in the pigeon     

William A. Roberts  Todd Macuda  David R. Brodbeck 《Learning & behavior》1995,23(2):182-188

Two groups of pigeons were trained to perform symbolic delayed matching-to-sample at a 0-sec delay with sample stimuli that consisted of sequences of light flashes. The sequences varied in number but not time for one group (number group) and in time but not number for the other group (time group). When retention was tested at delays up to 10 sec in Experiment 1, a choose-small effect was found in the number group, and a choose-long effect was found in the time group. Transfer tests between number and time samples in Experiment 2 supported the hypothesis that pigeons were discriminating between the number of light flashes at the end of sample sequences in Experiment 1. It was concluded that pigeons in both the number and the time groups were discriminating between number of flashes and that the apparent choose-long effect was actually a choose-small effect. The implications of these findings for the mode-control model of counting and timing (Meck & Church, 1983) were discussed.  相似文献   

Embedding Probeware Technology in the Context of Ocean Acidification in Elementary Science Methods Courses     

Todd I. Ensign  James A. Rye  Melissa J. Luna 《Journal of Science Education and Technology》2017,26(6):646-656

Research indicates that preservice teacher (PT) education programs can positively impact perceptions of scientific probeware use in K-8 environments. Despite the potential of probeware to improve science instruction and student engagement, its use in elementary education has been limited. Sixty-seven PT enrolled across three sections of an elementary science methods course participated in a mixed-methods study through which they utilized probeware in a thematic experience on ocean acidification. One-way repeated measures ANOVA of pre and post survey data measuring subscales of utility, ability, and intent to use probeware demonstrated a statistically significant increase with medium to large effect sizes for all subscales across all sections \( \left(p<0.01,\kern0.5em {\eta}_p^2=0.384;\kern0.5em p<0.001,\kern0.5em {\eta}_p^2=0.517;\kern0.0em p<0.001,\kern0.0em {\eta}_p^2=0.214\right) \). Analysis of reflective journals revealed over 60% felt the multiple capabilities (notably graphing) of probeware make it a useful classroom tool, and almost one-half believed that its use makes science more enjoyable and engaging. Mapping of the unitized data from the journals on the Next Generation Science Standards suggested that probeware use especially engages learners in planning and carrying out investigations and in analyzing and interpreting data. Journals also revealed that despite PT having prior experience with probeware in science courses, its use in their future elementary classroom is conditional on having a positive experience with probeware in a science methods course. Further, embedding a probeware experience in a unit on ocean acidification provides PT with strategies for addressing climate change and engaging in argument from evidence.  相似文献   

Differential effects of global modifications to large‐scale high stakes examination programmes     

Don A. Klinger  W. Todd Rogers 《Assessment in Education: Principles, Policy & Practice》2006,13(1):29-43

Driven largely by calls for accountability, the use of large‐scale testing is expanding in terms of the number and purposes of testing programmes. At the same time, financial constraints have resulted in attempts to reduce the lengths of such examinations. An examination of the 1994/1995 and 1995/1996 British Columbia Scholarship programme illustrates that differential and unanticipated differences can occur when such changes to the testing programme are made. The removal of a portion of the constructed‐response (CR) and written tasks (WT) items used to identify scholarship recipients resulted in differences in scholarship scores and the identification of scholarship recipients. Further, the differences were found to affect subgroups of students differentially. While there were no differences attributed to gender, higher difference rates were associated with course area (humanities vs. science) or examination session (January vs. June). The results illustrate the complex and contextual impact of changes to examination programmes and the potential consequences of such changes. Test developers and users must make more of an effort to examine the consequences of examination programmes and planned changes upon the students and others who may be affected by the results.  相似文献   

Controversy versus concurrence seeking in multi-grade and single-grade learning groups     

David W. Johnson  Roger Johnson  W. Todd Pierson  Virginia Lyons 《科学教学研究杂志》1985,22(9):835-848

The effects of controversy and concurrence seeking and participation is age-homogeneous and age-heterogeneous cooperative learning groups were compared on achievement, achievement motivation, perspective-taking accuracy, and interpersonal attraction. In addition, the interaction among students within the cooperative learning groups was observed. One-hundred-twelve 4th-, 5th-, and 6th-grade students were assigned to conditions on a stratified random basis controlling for age, sex, reading ability, and homerooms. In all conditions, students studied two controversial issues with materials representing both pro and con views. In the controversy condition each small group was divided into two halves representing the pro and con sides. In the concurrence-seeking condition each small group studied pro and con materials on alternating days and were told to learn the material without arguing or disagreeing with one another. In the multi-age conditions 4th-, 5th, and 6th-graders were placed in the same learning groups, while in the single-age conditions students were placed in small groups with peers of the same age. The results indicate that controversy promoted higher achievement, greater achievement motivation, and more accurate perspective taking than did concurrence seeking. Multi-age learning groups had greater achievement motivation than did the single-age groups.  相似文献   

Conceptualising poverty as a barrier to learning through ‘Poverty proofing the school day’: The genesis and impacts of stigmatisation     

Laura Mazzoli Smith  Liz Todd 《British Educational Research Journal》2019,45(2):356-371

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The Departmental Script as an Ongoing Conversation into the Phronesis of Teaching Science as Inquiry     

Wayne Melville  Todd Campbell  Xavier Fazio  Anthony Bartley 《Journal of Science Education and Technology》2012,21(6):835-850

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‘I do not think I actually do it well’: a discourse analysis of Australian senior secondary teachers’ self-efficacy and attitudes towards implementation of differentiated instruction     

Tom Porta  Nicole Todd  Lorraine Gaunt 《Journal of Research in Special Educational Needs》2022,22(3):297-305

Differentiated instruction is a proactive teaching model and philosophy with demonstrated potential to cater for diverse learners and create inclusive classrooms. There is little research, however, into the implementation of this approach in the senior secondary classroom. Teachers’ implementation of differentiated instruction has been shown to be linked to teacher attitudes and self-efficacy in other settings. This study investigated the impact of teachers’ self-efficacy and attitudes towards the implementation of differentiated instruction in the senior secondary context across two Australian states with a total of five participating teachers. The A (Affective) B (Behaviour) C (Cognitive) model was employed to define teacher attitudes from interviews concerning differentiated instruction. Findings indicated that teacher knowledge was a major factor influencing differentiation, in addition to attitude and self-efficacy. The discourse analysis demonstrated that teachers held a greater knowledge of differentiation strategies than the concepts that underpin the differentiated instruction framework. Additionally, time constraints and feelings of failure in implementing differentiation strategies impacted teacher attitudes. Teacher knowledge, attitude and self-efficacy were interrelated and impacted on teachers’ implementation of differentiated instruction in the senior secondary classroom. Implications for professional development to address student needs through differentiated instruction in the inclusive senior secondary classroom teacher are discussed.  相似文献   

PROGRAM EVALUATION OF THE PREPaRE SCHOOL CRISIS PREVENTION AND INTERVENTION TRAINING CURRICULUM     

Amanda B. Nickerson  Michelle L. Serwacki  Stephen E. Brock  Todd A. Savage  Scott A. Woitaszewski  Melissa A. Louvar Reeves 《Psychology in the schools》2014,51(5):466-479

This study details a program evaluation of the PREPa RE School Crisis Prevention and Intervention Training Curriculum (PREPa RE), conducted in the United States and Canada between 2009 and 2011. Significant improvements in crisis prevention and intervention attitudes and knowledge were shown among 875 Crisis Prevention and Preparedness workshop (Workshop 1) participants and 1,422 Crisis Intervention and Recovery workshop (Workshop 2) participants on matched pre‐tests and post‐tests. Results indicated high participant satisfaction for both Workshop 1 and Workshop 2. A qualitative analysis of workshop evaluation comments indicated strengths regarding workshop aims, materials, and activities, as well as suggestions for improvement, such as utilizing more active learning components. The use of these findings in the PREPa RE curriculum revision is discussed.  相似文献   

Problematizing the Practicum to Integrate Practical Knowledge     

Wayne Melville  Todd Campbell  Xavier Fazio  Antonio Stefanile  Nicholas Tkaczyk 《Research in Science Education》2014,44(5):751-775

This article examines the influence of a practicum teaching experience on two pre-service science teachers. The research is focused on examining a practicum in a secondary science department that actively promotes the teaching and learning of science as inquiry. We investigated the process through which the pre-service science teachers integrated their practical knowledge, and examined this in the context of the quantified reformed instruction they enacted. Using a mixed methods design, we have quantified these pre-service science teachers’ practice using the Reformed Teaching Observation Protocol (Piburn et al. 2000), in concert with a narrative methodology drawn from in-depth interviews. Our analysis of the data indicates two important conclusions. The first is the importance of a consistently reformed image of science education being presented and practiced by both science teacher educators and cooperating teachers. The second is the recognition that a consistently reformed image may not be sufficient, of itself, to challenge pre-service teachers’ views of science education. Pre-service teachers appear to be heavily influenced by their biographies and own science education. Consequently, it appears the extent to which a pre-service teacher identifies problems of teaching and learning, and then works toward possible resolution, influences their progress in shaping reformed views of science education.  相似文献   

The role of response-reinforcer correlation in signaled reinforcement effects     

Todd R. Schachtman  Phil Reed 《Learning & behavior》1990,18(1):51-58

In three experiments, we examined the effects of signaling reinforcement during operant responding in order to illuminate the factors underlying instrumental overshadowing and potentiation effects. Specifically, we examined whether signaling reinforcement produces an enhancement and attentuation of responding when the response-reinforcer correlation is weak and strong, respectively. In Experiment 1, rats responded on variable-ratio (VR) or variable-interval (VI) schedules that were equated for the number of responses emitted per reinforcer. A signal correlated with reinforcement enhanced response rates on the VR schedule, but attenuated response rates were produced by the signal on the VI schedule. In Experiment 2, two groups of rats responded on a VI schedule while the two other groups received a conjoint VI, negative fixed-ratio schedule in which the subjects lost the availability of reinforcements if they emitted high response rates. A reinforcement signal attenuated responding for the simple VI groups but not for the animals given the negative fixed-ratio component, although the signal improved response efficiency in both groups. In Experiment 3, a poor correlation between responding and reinforcement was produced by a VI schedule onto which the delivery of response-independent food was superimposed. A signal for reinforcement initially elevated responding on this schedule, relative to an unsignaled condition; however, this pattern was reversed with further training. In sum, the present experiments provide little support for the view that signaling reinforcement enhances responding when the response-reinforcer correlation is weak and attenuates responding when this correlation is strong.  相似文献