The effectiveness of inhibitors in human predictive judgments depends on the strength of the positive predictor

We tested whether the development of inhibitory strength, as measured by a summation test, is proportional to the strength of the positive cue (P) against which the inhibitory cue (I) is trained. P predicted the outcome, whereas the co-occurrence of P with I (PI) predicted no outcome. In Experiments 1, 2, and 3, we compared the latter design against a version in which P was overshadowed by another cue (X). In this design, the compound P^oX predicted the outcome, but P^oI^o predicted no outcome. In all three experiments, overshadowed cue I^o was less inhibitory than I. In Experiment 4, a P produced by fewer training trials also supported weaker inhibitory learning. Overall, the results were consistent with associative learning theories, especially Pearce’s (1994) configural model. Contingency models need to make additional assumptions to accommodate this property of inhibitory learning.     

The role of within-compound associations in learning about absent cues

When two cues are reinforced together (in compound), most associative models assume that animals learn an associative network that includes direct cue–outcome associations and a within-compound association. All models of associative learning subscribe to the importance of cue–outcome associations, but most models assume that within-compound associations are irrelevant to each cue’s subsequent behavioral control. In the present article, we present an extension of Van Hamme and Wasserman’s (Learning and Motivation 25:127–151, 1994) model of retrospective revaluation based on learning about absent cues that are retrieved through within-compound associations. The model was compared with a model lacking retrieval through within-compound associations. Simulations showed that within-compound associations are necessary for the model to explain higher-order retrospective revaluation and the observed greater retrospective revaluation after partial reinforcement than after continuous reinforcement alone. These simulations suggest that the associability of an absent stimulus is determined by the extent to which the stimulus is activated through the within-compound association.     

Effects of pretraining on acquisition of novel configural discriminations in human predictive learning

In two experiments, participants acquired one of two target configural discriminations (a biconditional or negative patterning discrimination) in a predictive learning task. In Experiment 1, participants were pretrained with either a configural or an elemental discrimination; in Experiment 2, they were pretrained with a configural discrimination, an elemental discrimination, or a control discrimination that was not expected to bias them toward elemental or configural processing. In both experiments, acquisition of the target configural discriminations was faster after configural pretraining than after elemental pretraining. In addition, the negative patterning discrimination was acquired faster than the biconditional discrimination. Finally, the results of Experiment 2 were more consistent with the notion that elemental pretraining hindered acquisition of the target discriminations than with the notion that configural pretraining enhanced their acquisition. Implications of these findings are discussed.     

Generalization decrements: further support for flexibility in stimulus processing

Thorwart and Lachnit (2009) found reliable symmetrical decrements in two generalization tasks: Removing an already trained component from a compound did not result in larger decrements than adding a new one did. In two contingency learning experiments, we investigated first whether time pressure during stimulus processing, as well as the degree of perceptual grouping, was effective in controlling the symmetry of the decrements (Experiment 1); and second, whether the symmetry was affected by the causal versus predictive nature of the relationship between the cue and the outcome (Experiment 2). The experiments generated unexpected results, since both revealed asymmetrical decrements independent of the manipulations introduced. They therefore demonstrate that more research is needed in order to understand the variables influencing stimulus representation in human associative learning.     

Normalization between stimulus elements in a model of Pavlovian conditioning: Showjumping on an elemental horse

Harris and Livesey. Learning & Behavior, 38, 1-26, (2010) described an elemental model of associative learning that implements a simple learning rule that produces results equivalent to those proposed by Rescorla and Wagner (1972), and additionally modifies in "real time" the strength of the associative connections between elements. The novel feature of this model is that stimulus elements interact by suppressively normalizing one another's activation. Because of the normalization process, element activity is a nonlinear function of sensory input strength, and the shape of the function changes depending on the number and saliences of all stimuli that are present. The model can solve a range of complex discriminations and account for related empirical findings that have been taken as evidence for configural learning processes. Here we evaluate the model's performance against the host of conditioning phenomena that are outlined in the companion article, and we present a freely available computer program for use by other researchers to simulate the model's behavior in a variety of conditioning paradigms.     

PLANNING, ENACTMENT, AND REFLECTION IN INQUIRY-BASED LEARNING: VALIDATING THE MCGILL STRATEGIC DEMANDS OF INQUIRY QUESTIONNAIRE

Tools are needed to track the elements of students’ successful engagement in inquiry. The McGill Strategic Demands of Inquiry Questionnaire (MSDIQ) is a 79-item, criterion-referenced, learner-focused questionnaire anchored in Sch?n’s model and related models of self-regulated learning. The MSDIQ addresses three phases of inquiry engagement—planning, enactment, reflection—perceived as important by teachers, parents, and students before or after inquiry participation. Internal consistency and validity evidence was obtained from 205 university students with different inquiry backgrounds: teacher education years 1 and 4, continuing teacher education, and honors psychology. Separate confirmatory factor analyses of planning, enactment, and reflection generated 14 intercorrelated factors congruent with definitions of inquiry instruction and supported the hypothesized structure underlying the MSDIQ as a reliable and valid instrument for measuring inquiry engagement and valuing its building blocks.     

Analysis of self-regulated learning processing using statistical models for count data

Researchers often use measures of the frequency of self-regulated learning (SRL; Zimmerman, American Educational Research Journal, 45(1), 166–183, 2000) processing as a predictor of learning gains. These frequency data, which are really counts of SRL processing events, are often non-normally distributed, and the accurate analysis of these data requires the use of specialized statistical models. In this study, we demonstrate how to implement and interpret count statistical models in path and latent profile analyses to investigate the role of SRL as a mediator of the relation between pretest and posttest conceptual understanding. Our findings from a sample of 170 college students using a computer to learn about the circulatory system show that SRL does mediate the aforementioned relation, and that count models are a more accurate representation of SRL processing data than standard analysis models based on ordinary least squares estimation. The results of our path analyses revealed which specific SRL processes were related to learning, above and beyond the effect of prior knowledge. Our latent profile analysis revealed two groups of participants, indicative of Brophy’s (2004) model of schematic and aschematic learners. We conclude with implications and future directions for basic and applied SRL research.     

Embodying emotions: making transactions explicit in science learning contexts

In this Forum paper we synthesize some of the main ideas from three papers: Auli Orlander and Per-Olof Wickman’s (Cult Stud Sci 6, 2011), Bodily experiences in secondary school biology, Roger Sages’ (Cult Stud Sci Educ 6, 2011), About Descartes: Uses and misuses, and Steve Alsop’s (Cult Stud Sci Educ 6, 2011), The body bites back! These papers challenged us to identify how emotions functioned as elements of bodily experiences in classroom transactions and why science teachers often are not responsive to students’ emoting. We also explored how teachers making use of curriculum and companion meanings could support the construction of learning environments that more productively support students’ science learning.     

Teachers explore knowledge management and E-learning as models for professional development

Conclusion It is interesting to report that the educators who took part in this look at KM and e-leaming have a great expectation of the development of online communities of learning. As one said in an e-mail message three days after the end of the course, “I just keep logging back on looking for interesting ideas and discussions with my extended family—I guess I’m addicted.” The model of resource gathering, resource sharing, collaboration and responsibility for learning which seems natural in an online course may be training the students to expect these same elements in professional development. Knowledge management and e-learning may provide additional conceptual models to build professional development to match these expectations. Special thanks to the students in ITED 7500 Instructional Technology Management, Spring Semester, 2000, whose contributions shaped this effort in ’the scholarship of teaching’.     

Applying educational models in technological education

This paper presents a group of elements to improve teaching and learning in technological education. These elements are based on some contributions issued from contemporary educational models, namely, the thematic approach, meaningful learning, concept maps, and the spiral curriculum. Based on a thematic approach, a new way is proposed to select the contents that will be explored in the educational process. We emphasize the benefits of a thematic approach in students’ motivation. After contents are chosen, we propose the use of the directives of meaningful learning and concept maps, as a method and as a tool, respectively, to organize knowledge hierarchically, from general and inclusive concepts to specific ones. This may facilitate learning and understanding of the great bulk of knowledge to be dealt with during technological courses. A proposal has been submitted for a teaching module in computer networks and also for a complete course plan. The spiral curriculum was applied during the development of learning in the classroom, where some fundamental concepts were introduced many times over, adding more details gradually. A qualitative analysis of the application of these educational proposals, including learning evaluation aspects, is also presented.     

Monet, Malaguzzi, and the Constructive Conversations of Preschoolers in a Reggio-Inspired Classroom

This study was conducted in a Reggio inspired child care classroom of 4-year olds where the fundamental principles of Reggio Emilia preschools are interpreted for a Canadian context. Qualitative case study methodology was employed to investigate how social interaction plays a role in young children’s learning processes. Drawing on social constructivist views of children’s learning and socialization, children’s discussions and interactions within a preschool learning group were examined. Examination of children’s discourse is valuable not only for understanding individual and group learning experiences but also for illuminating children’s agency and their active roles in their own learning. The study focused on the in-depth study of six children’s activities during a ‘Shades of Pink’ project. As the project, ‘Shades of Pink’ unfolded, the children faced cognitive conflict while they were talking about the details of Monet’s painting, but worked toward building common understandings. In this study, children are considered to be meaning makers and active participants in their own learning processes. In addition, the relationships between children became a context in which the co-construction of theories, interpretations and various understandings of reality took place. Small group work became a basis for creating unity, a space in which thoughts took shape as well as a way to compare interpretations; with the result that new thoughts and meanings were produced.     

Role of Discrepant Questioning Leading to Model Element Modification

Discrepant questioning is a teaching technique that can help students “unlearn” misconceptions and process science ideas for deep understanding. Discrepant questioning is a technique in which teachers question students in a way that requires them to examine their ideas or models, without giving information prematurely to the student or passing judgment on the student’s model. This strategy prompts students to see the contradictions in their own model. This study focused on the analysis of small group tutoring sessions on human respiration. Individual and small group construction of mental models was analyzed after instructed with a standardized teaching sequence based on model construction and criticism theory (Rea-Ramirez in Model of conceptual understanding in human respiration and strategies for instruction, Dissertation Abstracts International, 59 (10), 5196B, 1998). Analysis provided deeper understanding of the role discrepant questioning played in this construction of understanding and suggested new models of learning.     

Students’ conceptions of distinct constructivist assumptions

The present studies were conducted to investigate students’ conceptions of distinct constructivist assumptions. To that end, a questionnaire was developed containing statements about four constructivist assumptions: The importance of knowledge construction, cooperative learning, self-regulation, and the use of authentic problems together with self-perceived inability to learn and motivation to learn. The studies demonstrate that the questionnaire was able to unearth students’ conceptions of the distinctiveness of constructivist assumptions. Students were able to identify the six factors underlying the questionnaire, as indicated by the fit of the hypothesized model. The test for measurement invariance showed that factor loadings were equivalent across groups and that the questionnaire’s underlying factor structure gave evidence of cross-validation. Testing alternative models with one and three latent factors resulted in poor model fits, supporting the questionnaire’s latent factor structure. The questionnaire developed appeared an adequate instrument to investigate students’ conceptions of constructivist assumptions of learning and students acknowledge the importance of these assumptions as distinct influences on their learning process.     

Atom Surprise: Using Theatre in Primary Science Education

Early exposure to science may have a lifelong effect on children’s attitudes towards science and their motivation to learn science in later life. Out-of-class environments can play a significant role in creating favourable attitudes, while contributing to conceptual learning. Educational science theatre is one form of an out-of-class environment, which has received little research attention. This study aims to describe affective and cognitive learning outcomes of watching such a play and to point to connections between theatrical elements and specific outcomes. “Atom Surprise” is a play portraying several concepts on the topic of matter. A mixed methods approach was adopted to investigate the knowledge and attitudes of children (grades 1–6) from two different school settings who watched the play. Data were gathered using questionnaires and in-depth interviews. Analysis suggested that in both schools children’s knowledge on the topic of matter increased after the play with younger children gaining more conceptual knowledge than their older peers. In the public school girls showed greater gains in conceptual knowledge than boys. No significant changes in students’ general attitudes towards science were found, however, students demonstrated positive changes towards science learning. Theatrical elements that seemed to be important in children’s recollection of the play were the narrative, props and stage effects, and characters. In the children’s memory, science was intertwined with the theatrical elements. Nonetheless, children could distinguish well between scientific facts and the fictive narrative.     

<Emphasis Type="Italic">Clockwork</Emphasis>: Philip Pullman’s Posthuman Fairy Tale

This article examines the connections between posthumanism and narrative form in Philip Pullman’s Clockwork. Beginning with an account of Pullman’s materialism, it argues that the novel represents consciousness and agency as emergent properties of matter, a position that manifests itself first in the tale’s figurative language and later in the cybernetic inventions of Dr. Kalmenius. As Pullman effaces the boundaries between animate and inanimate, human and non-human, he generates uncanny effects that are best understood in terms of the posthuman condition and narrative modes that reject liberal humanist models of subjectivity. Clockwork’s uncanny elements, metafictive qualities, and distribution of narrative voice across multiple perspectives thus represent narrative accommodations demanded by the tale’s rejection of the Cartesian mind/body dualism that grounds the liberal humanist subject. Clockwork’s acceptance of the posthuman condition is, however, incomplete and anxiety-laden, and the fairy-tale transformation of Prince Florian at the end of the novel represents a partial recuperation of liberal humanist morality.     

Stimulus control in fixed interfood intervals

The control exerted by various portions of fixed-time and fixed-interval schedules was assessed with a trace-conditioning procedure. The intervals were segmented into 10 bins. In all but 1 of those bins, the stimuli were presented in different random orders on each trial. In 1 bin, the stimulus was the same on each trial. The position of this trace stimulus was varied across phases. The results indicated that a trace stimulus can come to control behavior and that differential control can extend to even the second tenth of an interfood interval. The results were interpreted as indicating that traditional explanations of the rate loss in earlier portions of an interfood interval are inadequate and that models such as Palya’s (1993) bipolar model or Miller and Schachtman’s (1985) comparator model may provide a principled framework with which to understand within-trial effects.     

Promoting equity in mathematics teacher preparation: a framework for advancing teacher learning of children’s multiple mathematics knowledge bases

Research repeatedly documents that teachers are underprepared to teach mathematics effectively in diverse classrooms. A critical aspect of learning to be an effective mathematics teacher for diverse learners is developing knowledge, dispositions, and practices that support building on children’s mathematical thinking, as well as their cultural, linguistic, and community-based knowledge. This article presents a conjectured learning trajectory for prospective teachers’ (PSTs’) development related to integrating children’s multiple mathematical knowledge bases (i.e., the understandings and experiences that have the potential to shape and support children’s mathematics learning—including children’s mathematical thinking, and children’s cultural, home, and community-based knowledge), in mathematics instruction. Data were collected from 200 PSTs enrolled in mathematics methods courses at six United States universities. Data sources included beginning and end-of-semester surveys, interviews, and PSTs’ written work. Our conjectured learning trajectory can serve as a tool for mathematics teacher educators and researchers as they focus on PSTs’ development of equitable mathematics instruction.     

Removing but not adding elements of a context affects generalization of instrumental responses

Three experiments with rats investigated whether adding or removing elements of a context affects generalization of instrumental behavior. Each of the experiments used a free operant procedure. In Experiments 1 and 2, rats were trained to press a lever for food in a distinctive context. Then, transfer of lever pressing was tested in a context created either by adding an element to the context of initial acquisition or by removing one of the acquisition context’s elements. In Experiment 3, a similar generalization test was conducted after rats received acquisition and extinction within the same context. For Experiments 1 and 2, we observed that removing elements from the acquisition context disrupted acquisition performance, whereas the addition of elements to the context did not. Experiment 3 revealed that removing elements from but not adding elements to the original context improved extinction performance. Our results are consistent with an elemental view of context representation.     

Secondary School Students’ Construction and Use of Mathematical Models in Solving Word Problems

This study focussed on how secondary school students construct and use mathematical models as conceptual tools when solving word problems. The participants were 511 secondary-school students who were in the final year of compulsory education (15–16 years old). Four levels of the development of constructing and using mathematical models were identified using a constant-comparative methodology to analyse the student’s problem-solving processes. Identifying the general in the particular and using the particular to endow the general with meaning were the key elements employed by students in the processes of construction and use of models in the different situations. In addition, attention was paid to the difficulties that students had in using their mathematical knowledge to solve these situations. Finally, implications are provided for drawing upon student’s use of mathematical models as conceptual tools to support the development of mathematical competence from socio-cultural perspectives of learning.     

Inter-relations of tutor’s and peers’ scaffolding and decision-making discourse acts

This study investigates the mechanisms of scaffolding in a synchronous network-based environment – the ‘collaborative virtual workplace’. A theoretical ‘multi-actor’ scaffolding model was formulated. The study itself focused on the role and inter-relations of verbal scaffolding by tutor and peers during a collaborative process of making decisions about environmental issues. The analysis drew on data from the decision-making discussions of 31 groups – material that was saved automatically by the learning environment software. The age of the 62 students ranged from 14 to 17. Discourse act categories were devised to describe the tutor’s and the students’ task-related, supportive and social communicative acts. The scaffolding situation was characterized through a causal discourse act interaction approach. Tutor and students appeared to be elaborating and replacing each other’s process scaffolding acts in the collaborative decision-making situation. The influence of certain tutor’s and students’ inter-related scaffolding patterns on students’ decision-making provided empirical support for the ‘multi-actor’ scaffolding model. in final form: 12 May 2005