Theoretical framework and empirical evidence of students' cognitive processes in three dimensions of content,complexity, and time

In the literature, learners' cognitive development is mainly discussed with respect to changes in learners' content‐dependent knowledge (conceptual change or growth). Additional dimensions of time and complexity may also be taken into account to describe cognitive processes in at least three dimensions. We discuss these three dimensions of content, complexity, and time theoretically and show empirically what results can be found with such a framework. The primary database consists of 27 students who worked in groups of three on physics tasks during three sessions in an experimental setting. All activities were videotaped and analyzed in great detail. Results indicate that students' meanings always refer to a narrow area of content, are developed bottom‐up with respect to complexity, and show time‐dependent dynamics in which maxima of 30 seconds and 5 minutes are important time scales. Comparison with outcomes of additional experimental settings on the same topic with more and less advanced students indicate the results to have a greater validity. © 2003 Wiley Periodicals, Inc. J Res Sci Teach 40: 616–648, 2003     

Interval timing under a behavioral microscope: Dissociating motivational and timing processes in fixed-interval performance

The distribution of latencies and interresponse times (IRTs) of rats was compared between two fixed-interval (FI) schedules of food reinforcement (FI 30 s and FI 90 s), and between two levels of food deprivation. Computational modeling revealed that latencies and IRTs were well described by mixture probability distributions embodying two-state Markov chains. Analysis of these models revealed that only a subset of latencies is sensitive to the periodicity of reinforcement, and prefeeding only reduces the size of this subset. The distribution of IRTs suggests that behavior in FI schedules is organized in bouts that lengthen and ramp up in frequency with proximity to reinforcement. Prefeeding slowed down the lengthening of bouts and increased the time between bouts. When concatenated, latency and IRT models adequately reproduced sigmoidal FI response functions. These findings suggest that behavior in FI schedules fluctuates in and out of schedule control; an account of such fluctuation suggests that timing and motivation are dissociable components of FI performance. These mixture-distribution models also provide novel insights on the motivational, associative, and timing processes expressed in FI performance. These processes may be obscured, however, when performance in timing tasks is analyzed in terms of mean response rates.     

The ‘Nature of Science’ and the Perils of Epistemic Relativism

Research in Science Education - There is an increasing demand in the field of science education for the incorporation of philosophical and sociological aspects that are related to the scientific...     

Constructivism in Practice: an Exploratory Study of Teaching Patterns and Student Motivation in Physics Classrooms in Finland,Germany and Switzerland

For the last three decades, moderate constructivism has become an increasingly prominent perspective in science education. Researchers have defined characteristics of constructivist-oriented science classrooms, but the implementation of such science teaching in daily classroom practice seems difficult. Against this background, we conducted a sub-study within the tri-national research project Quality of Instruction in Physics (QuIP) analysing 60 videotaped physics classes involving a large sample of students (N?=?1192) from Finland, Germany and Switzerland in order to investigate the kinds of constructivist components and teaching patterns that can be found in regular classrooms without any intervention. We applied a newly developed coding scheme to capture constructivist facets of science teaching and conducted principal component and cluster analyses to explore which components and patterns were most prominent in the classes observed. Two underlying components were found, resulting in two scales—Structured Knowledge Acquisition and Fostering Autonomy—which describe key aspects of constructivist teaching. Only the first scale was rather well established in the lessons investigated. Classes were clustered based on these scales. The analysis of the different clusters suggested that teaching physics in a structured way combined with fostering students’ autonomy contributes to students’ motivation. However, our regression models indicated that content knowledge is a more important predictor for students’ motivation, and there was no homogeneous pattern for all gender- and country-specific subgroups investigated. The results are discussed in light of recent discussions on the feasibility of constructivism in practice.     

Reading Aloud Narrative Material as a Means for the Student's Cognitive Empowerment

Listening to stories and brain processing of narrative material activates many areas devoted not only to the linguistic processing. In this sense, it could be hypothesized that if this activity would be integrated within the school curricula, it could bring benefits in terms of understanding the text as well as in basic essential cognitive dimensions. In a series of studies with different age groups, we investigated the effects of an intensive training in narrative listening, through different tools such as the standardized tests of understanding of the text. We also used a neuropsychological battery investigating basic cognitive processes (cognitive assessment system) that are directly related to the ability of text comprehension. Results show a significant improvement in all tests for all age groups in the experimental groups, in comparison with the control groups.     

Social constructs regarding the physical and sexual energy of whites,indigenous South Americans and blacks in Spanish and Colombian primary school reading books between 1900 and 1960*

This article analyses the manner in which the physical and sexual energy of the white, native South American and black populations was represented in reading books for elementary school children in Spain and Colombia between 1900 and 1960. Ninety reading books from representative authors were examined. It was found that the ideal of extraordinary physical vigour attributed to the white male was decisive in justifying Spanish imperialism, the superiority of the male in the patriarchal family and the intervention of authorities in administering people’s bodies. In the case of Spanish texts, the might attributed to the white race was shown as having a motive of pride, whereas in the Colombian case, the mixture with Native Americans and blacks tended to be used as an explanation for the ‘weakness’ of Colombians. Evidence is also found of the way in which education was implicitly conceived as a process of cultural ‘whitening’.     

Family resources and mid‐life level of education: a longitudinal study of the mediating influence of childhood parental involvement

This paper draws on the concept of parental involvement, popular among educators and policy‐makers, in investigating differences in level of attained education by family background. The question is if parental involvement in children's schooling at age 14 acts as a mediator between family resources and mid‐life level of attained education. Using structural equation modeling we analyze longitudinal survey and register data of a Swedish metropolitan cohort born in 1953 (n = 3300). Several of the commonly used indicators of involvement are investigated, distinguishing between parents' involvement beliefs, such as educational aspirations and agreement with school curriculum, and involvement practices, such as reading children's schoolbooks and helping with homework. We find that parents' educational aspirations are an important mediator between family resources and attained level of education, while other involvement forms are related to academic performance only. We also find that parental involvement is greater in families with more resources, which leads us to warn against developments turning more responsibility for children's schooling over to parents. Unless sensitive to the diverse family contexts this might increase the importance of family resources for children's educational outcomes.     

Producing Knowledge for Living

Work is still associated predominantly with employment. A lot of studies focus on the link between learning and labour, but there are few investigations of what kind of knowledge is produced in the act of creating and sustaining life. This is not surprising as subsistence production is not valued as much as work that generates profits. The daily backbreaking work of poor people and women is best captured from the perspective of livelihood systems. These are constantly adjusted and they vary from one person, household or community to another. Working knowledge defined in terms of livelihood activities includes knowing how local hierarchies are tied up in larger socio-political structures, how indigenous herbs can be used for healing, and how communal resources should best be managed so that they serve the interests of all. The paper uses a case study from a village in Zimbabwe to illustrate how the collective actions of a community resulted in learning that led to the rehabilitation of a community dam and a plan for sustainable management of this asset. In this way, villagers could diversify their activities, and thus become less vulnerable to hazards such as drought. The paper suggests that educators have a role in helping villagers to ask the right questions in the process of making really useful knowledge for living.     

Exclusion Expected? Cardiac Slowing Upon Peer Exclusion Links Preschool Parent Representations to School-Age Peer Relationships

Attachment theory proposes that children’s representations of interactions with caregivers guide information-processing about others, bridging interpersonal domains. In a longitudinal study (N = 165), preschoolers (M_age = 5.19 years) completed the MacArthur Story Stem Battery to assess parent representations. At school-age (M_age = 8.42 years), children played a virtual ballgame with peers who eventually excluded them to track event-related cardiac slowing, a physiological correlate of rejection, especially when unexpected. At both ages, parents and teachers reported on peer and emotional problems. During exclusion versus inclusion-related events, cardiac slowing was associated with greater positive parent representations and fewer emerging peer problems. Cardiac slowing served as a mediator between positive parent representations and peer problems, supporting a potential psychophysiological mechanism underlying the generalization of attachment-related representations to peer relationships.