Rethinking Collaborative Learning Through Participation in an Interdisciplinary Research Project: Tensions and Negotiations as Key Points in Knowledge Production

As social and cultural psychologists of learning, we are persuaded of the crucial role of interaction in development and learning. But how do we experience this assumption in our own research practices and in our collaboration with colleagues? Taking as our object of study our own participation in a European Research and Development project that aimed to enhance interactive and argumentative skills in learning settings, this study shows how collaboration among project partners is not something that is to be taken for granted, but something that is elaborated and evolves in time, takes diverse forms, and is mediated by multiple tools. The psychological processes—more particularly tensions and negotiation—involved in collaboration are developed and discussed. The study explores the processes of establishing collaboration and, through the analysis of specific zones of tensions, sheds light on the way new knowledge (on how to do research, how to communicate, how to work together) is constructed. It contributes to the understanding of the issues and conditions for the development of a community of practice.     

Sooner versus later: factors associated with temporal sequencing of suicide

There are few (if any) population-based prospective studies that provide information on factors associated with temporal sequencing of suicide. In this prospective population-based study, the National Health Interview Survey (NHIS), 1986-1994, was linked to the National Death Index (NDI), 1986-1997, to assess factors that predict recent (within 12 months of interview, termed sooner) suicide versus suicide further in the future (more than 12 months after interview, termed later). Of the 653 completed suicides in the NHIS cohort, 13.4 percent completed suicide within a year of interview, and 86.6 percent did so after a year. Sooner decedents were more likely to be White, less educated, unemployed, and to use firearms than any other method compared with later decedents. Surprisingly, sooner decedents had higher levels of self-rated health at baseline. These results have substantial implications for clinicians and other professionals who interact with people at highest risk of suicide. Unfortunately, it may be unrealistic to expect that health care providers can modify the behavior of individuals at highest risk of suicide.     

Games in Clinical Genetic Counseling Supervision

Games are defined as ongoing series of complementary ulterior transactions that are superficially plausible but have a concealed motivation to maximize pay-offs and minimize penalties for the initiator. While some games are harmless and part of socialization, others are destructive. Destructive game-playing in clinical supervision, in which game-playing (initiated by either supervisors or students) interferes with a student's realization of internship goals, has been documented in some allied healthcare professions but has not yet been studied in genetic counseling. Genetic counselors and clinical supervisors of genetic counseling students were anonymously surveyed regarding their experiences with destructive game-playing. Results show that such games do occur in genetic counseling clinical supervision. Some games are the same or similar to ones previously described in other health-care professions; others may be unique to genetic counseling. The purpose of this paper is to document these games as a first step to facilitating dialogue, understanding and awareness of them.     

Mechanisms for ovarian cycle disruption by immune/inflammatory stress

This review summarizes highlights of our experiments investigating mechanisms, mediators and sites by which endotoxin disrupts reproductive neuroendocrine activity and interferes with the estrous cycle of sheep. Endotoxin, or lipopolysaccharide (LPS), is a commonly used model for immune and inflammatory stress. When administered to ovary-intact ewes, endotoxin interrupts the follicular phase of the cycle by interfering with several steps in the preovulatory chain of endocrine events. One such step is the development of high frequency LH pulses, which provide an essential stimulus for the preovulatory increase in estradiol secretion from the ovarian follicle. Follow-up experiments in ovariectomized ewes demonstrate that endotoxin inhibits pulsatile LH secretion at both the hypothalamic and pituitary levels, suppressing pulsatile GnRH secretion and reducing pituitary responsiveness to GnRH. This disruption of GnRH and LH pulsatility is mediated by pathways that include the synthesis of prostaglandins and cortisol, both of which are increased by endotoxin. It is postulated that a prostaglandin-mediated pathway disrupts the cycle during immune and inflammatory stress, whereas a separate cortisol-mediated pathway reinforces this disruption and also participates more generally in suppressing cyclicity during other stressful situations that activate the hypothalamo-pituitary-adrenal axis.     

DNA-sequence patenting: National Society of Genetic Counselors (NSGC) position paper

In November 2000, the Genetic Services Committee of the National Society of Genetic Counselors (NSGC) convened a working group to draft a position paper on patenting of DNA-sequences. The mandate of the group was to produce general position statements that support the perspective and needs of consumers of DNA-based genetic tests and therapies (our patients and their families) and participants in DNA-based genetic research. After review and discussion of the literature on DNA-sequence patenting issues, the working group drafted position statement points that support current United States Patent and Trademark Office (USPTO) guidelines; broad licensing of DNA-sequence patents; nonenforcement of DNA-sequence patents in noncommercial research; reasonable royalty rates; an informed consent process for research participants that discloses whether they can share in any financial rewards relating to the project; the development of guidelines for licensing of DNA-sequence patents; and the establishment of oversight organizations to monitor licensing of DNA-sequence patents. These position statements were approved by the NSGC Board of Directors in the fall of 2001.     

Poetry as a Mnemonic Prompt in Children's Stories

This research investigates the effects of prosody on children's recall for stories using two successive studies. Study 1 is an ethnographic exploration of a group of fifth graders creating summaries of a children's story with overt prosodic elements. Study 2 is a quasi-experiment in which the story summaries created by students who heard one of two versions (more or less prosodic) of the story from Study 1 were compared. Overall, we find that the amount of prosody in a story has a significant effect on children's story recall and the quality of the stories they produce.     

Right and Righteous: Children's Incipient Understanding and Evaluation of True and False Statements

Two studies examined young children's early understanding and evaluation of truth telling and lying and the role that factuality plays in their judgments. Study 1 (one hundred four 2- to 5-year-olds) found that even the youngest children reliably accepted true statements and rejected false statements and that older children's ability to label true and false (T/F) statements as “truth” and “lie” emerged in tandem with their positive evaluation of true statements and “truth” and their negative evaluation of false statements and “lie.” The findings suggest that children's early preference for factuality develops into a conception of “truth” and “lie” that is linked both to factuality and moral evaluation. Study 2 (one hundred twenty-eight 3- to 5-year-olds) revealed that whereas young children exhibited good understanding of the association of T/F statements with “truth,” “lie,” “mistake,” “right,” and “wrong,” they showed little awareness of assumptions about speaker knowledge underlying “lie” and “mistake.” The results further support the primacy of factuality in children's early understanding and evaluation of truth and lies.     

Deductive reasoning and matching-bias inhibition training: Evidence from a debiasing paradigm

Using the matching bias example, the aim of the present studies was to show that adults' reasoning biases are due to faulty executive inhibition programming. In the first study, the subjects were trained on Wason's classical card selection task; half were given training in how to inhibit the perceptual matching bias (experimental group) and half in logic without the inhibition component (control group). On the pre- and post-tests, their performance was assessed on the Evans conditional rule falsification task (with a negation in the antecedent of the rule), a task that also involves matching bias. In addition, subjects were tested for perceptual field dependence/independence using the Embedded Figures Test. The results brought out a specific inhibition training effect, as well as a clear-cut relationship in the experimental group between receptiveness to training and perceptual field independence. In the second study, the training paradigm was the same except that on the pre- and post-tests, the negation was in the consequent of the conditional rule (in this case, the perceptual matching response corresponds to the logical response). The subjects succeeded on the pre-test, and the matching-bias inhibition training had a negative effect on post-test performance. This specific negative priming effect confirms the inhibitory impact of our experimental training and outlines the dissociation of inhibition and logical components.     

Defining Communication and Language from Within a Pluralistic Evolutionary Worldview

Topoi - New definitions are proposed for communication and language. Communication is defined as the evolution of physical, biochemical, cellular, community, and technological information exchange....