An associative analysis of instrumental biconditional discrimination learning

Three different techniques were employed to analyze the associative structures mediating performance on an instrumental biconditional discrimination. In all three experiments, rats were trained concurrently on two tasks in which different stimuli signaled which one of two responses would be followed by reward. In each task, one response was rewarded in one stimulus and the other response was rewarded in the other stimulus. Correct responses earned pellets in one task and sucrose in the other task. The transfer procedure was used in Experiment 1A to identify whether or not an association developed between a biconditional discriminative stimulus and its instrumental outcome. Evidence was obtained that a biconditional cue elevated preferentially a new response trained with the same outcome. Experiments 1B and 3 examined the potential contribution of this stimulus-outcome association to biconditional performance by training the biconditional cues as signals (S-s) for the nonreinforcement of a different response. There was no evidence that this operation interfered with the ability of a biconditional cue to control performance of its correct response. In Experiments 1B and 2, the value of the instrumental outcome was reduced in an attempt to assess the contribution of stimulus-response associations to performance on the biconditional discrimination. The results of Experiments 1B and 2 reveal that correct responses were depressed following devaluation of the outcome used to train them, suggesting that learning about the response-outcome relation occurs. The implications of these results for binary and hierarchical models of instrumental learning are discussed.     

Maternal Separation Anxiety: Its Developmental Course and Relation to Maternal Mental Health

Maternal separation anxiety is a construct that describes a mother's experience of worry, sadness, or guilt during short-term separations from her child. This investigation examined potential differences in psychological correlates between mothers with high and low levels of anxiety when their children were 8 months, 3 1/2 years, and 6 years of age. High levels of maternal separation anxiety had different psychological correlates contingent upon the age of the child. Depressive symptomatology and separation anxiety were unrelated at times 1 and 2, but when the children were 6 years old, mothers who had the highest levels of anxiety tended to have more depressive symptomatology, fewer coping skills, a more negative representation of self, and embraced more traditional sex-role values. Study findings are discussed with respect to their relevance to the mother's role as developmental partner to the child and linked to major theoretical perspectives that address the mother-child relationship.     

Weak Ties in Networked Communities

Communities with high levels of social capital are likely to have a higher quality of life than communities with low social capital. This is due to the greater ability of such communities to organize and mobilize effectively for collective action because they have high levels of social trust, dense social networks, and well-established norms of mutuality (the major features of social capital). Communities with “bridging” social capital (weak ties across groups) as well as “bonding” social capital (strong ties within groups) are the most effective in organizing for collective action. People who belong to multiple groups act as bridging ties. When people with bridging ties use communication media, such as the Internet, they enhance their capability to educate community members and to organize, as needed, for collective action. This article summarizes evidence from stratified household survey data in Blacksburg, VA, showing that people with weak (bridging) ties across groups have higher levels of community involvement, civic interest, and collective efficacy than people without bridging ties among groups. Moreover, heavy Internet users with bridging ties have higher social engagement, use the Internet for social purposes, and have been attending more local meetings and events since going online than heavy Internet users with no bridging ties. These findings may suggest that the Internet—in the hands of bridging individuals–is a tool for enhancing social relations and information exchange, and for increasing face-to-face interaction, all of which help to build both bonding and bridging social capital in communities.     

Learning strategies and study approaches of postsecondary students with dyslexia

The present study describes the self-reported learning strategies and study approaches of college and university students with and without dyslexia and examines the relationship of those characteristics with reading ability. Students with (n = 36) and without (n = 66) dyslexia completed tests measuring reading rate, reading comprehension, reading history, learning strategies, and learning approaches. The results indicated that students without dyslexia obtained significantly higher scores than students with dyslexia in their reported use of selecting main ideas and test taking strategies. Students with dyslexia reported significantly greater use of study aids and time management strategies in comparison to students without dyslexia. Moreover, university students with dyslexia were significantly more likely to report a deep approach to learning in comparison to university students without dyslexia. Reading ability correlated positively with selecting main ideas and test taking strategies and negatively with use of study aids. The authors interpret the learning strategy results as consequences of and compensations for the difficulties that students with dyslexia have in word reading.     

Mathematics teachers’ representations of authority

Issues of authority abound in education and schooling but have not been interrogated sufficiently. We describe a tool that we have developed to initiate dialogue with teachers about authority in their classrooms—using a diagram to represent authority in their classrooms. Our analysis of the diagrams mathematics teachers created and discussed in our work with them illustrates the importance of understanding teachers’ perspectives about authority. To understand better how mathematics teachers think about the authority in their classrooms, we investigated what sources of authority they represented in their diagrams, and how the teachers related these sources to each other. The diversity in the teachers’ representations exceeded our anticipations, indicating that research on authority in classrooms has merely scratched the surface of understanding the ways mathematics teachers think about authority in their classrooms.     

Interrupting the discourse: a response to Reid and Valle

Reid and Valle (in this issue) illustrate how discourse within the field of learning disabilities (LD) determines what can and cannot be said and shapes what counts as knowledge or truth. Because basic assumptions about disability often remain unquestioned, Reid and Valle ask us to focus on the epistemological foundations of the field of LD. They demonstrate how discourse, far from being simply an academic or abstract theoretical pursuit, has direct material consequences for people labeled as having LD. In this response, I highlight some of the ways that the discourse in the LD field is getting in the way of truly transforming education for all learners and impeding our ability to ask the hard questions about our own complicity in issues such as the overrepresentation of students of color and the inaccessibility of general education learning environments.     

Reference, or advisory, groups involving disabled people: reflections from three contrasting research projects

Increasingly in recent years, the involvement of disabled people as co-researchers has been regarded as 'good practice'. This has been informed by growing participatory and emancipatory research paradigms as well as user-focused policy imperatives. The benefits of these shifts apply to the research itself (improved definition, direction, applicability and impact), to non-disabled researchers (personal growth and enhanced understanding of the reflexive research process), to people with disabilities involved as researchers or collaborators (personal growth and enhanced opportunities), and (if externally funded) to the funder whose ways of operating are likely to be challenged profoundly. In this paper, Ann Lewis, Sarah Parsons and Christopher Robertson (based at the University of Birmingham), Anthony Feiler, Beth Tarleton and Debby Watson (based at the University of Bristol) and Richard Byers, Jill Davies, Ann Fergusson and Claire Marvin (based at the University of Cambridge) discuss the work of three independent research teams carrying out concurrent projects. The authors share their experiences of trying to take seriously the participation of disabled people in research. All three projects were informed, to a significant degree, by their respective reference groups of disabled people. The work of these groups in each of the three projects is outlined and then discussed in relation to five common themes: formal contracts with members of reference groups; considerations concerning drawing on an established reference group; planning for reference group involvement; style of reference group involvement; and building on good practice.