INTERPRETING COPING STYLES ACROSS NATIONS FROM SEX AND SOCIAL CLASS DIFFERENCES1

Un questionnaire qui mesure l'orientation active ou passive dans l'aptitude à faire face à une situation a été appliqué à 3200 enfants de quatorze ans appartenant aux septs pays suivants: Japon, Italie, Mexique, Brésil, Yougoslavie, Angleterre, U.S.A. (2 échantillons: Austin et Chicago). Les résultats sont étudiés et interprétés en fonction des variables de sexe, de classe sociale et de groupe national. Ils sont également mis en relation avec un index de développement économique.     

Violent behavior in schizophrenic patients: relationship with clinical symptoms

Considerable evidence suggests that violent behavior observed in schizophrenic patients is motivated by psychotic symptomatology. The understanding of violence in schizophrenic patients requires consideration of psychiatric symptomatology. Objective: This study investigated the relationship between violent behavior and psychiatric symptomatology in schizophrenic patients. Method: One hundred and thirteen patients were recruited. Thirteen patients were excluded due to concomitant substance abuse six months prior to the assessment. Diagnoses were based on the SCID‐I. Psychotic symptom severity was assessed with the PANSS. Violent behaviors were assessed with the OAS. Results: Violent behaviors were associated with more severe psychotic symptomatology including hallucinations, delusions, excitement, poor impulse control, and thinking disturbances. Conclusions: Patients with exacerbation of psychotic symptomatology have an increased risk of violent behavior. It is necessary to determine which subtypes of hallucinations and delusions are implicated in the association of schizophrenia and violent behavior. Violent behavior in schizophrenic patients is a heterogeneous phenomenon best explained in the context of specific symptoms associated with violence and course of illness. The retrospective assessment of the variables raises methodological questions concerning the reliability of measurement of the impact of psychotic symptoms on violence. Aggr. Behav. 00:1–10, 2005. © 2005 Wiley‐Liss, Inc.     

BDNF reverses the CTA memory deficits produced by inhibition of protein synthesis

Brain-derived neurotrophic factor (BDNF) is an essential protein synthesis product that has emerged as one of the most potent molecular mediators of not only central synaptic plasticity, but also behavioral interactions between an organism and its environment. Our previous studies on the insular cortex (IC), a region of the temporal cortex implicated in the acquisition and storage of conditioned taste aversion (CTA), have demonstrated that intracortical microinfusion of BDNF induces a lasting potentiation of synaptic efficacy in the projection from the basolateral nucleus of the amygdala (Bla) to the IC of adult rats in vivo. Recently, we found that intracortical microinfusion of BDNF previous to CTA training enhances the retention of this task. In this work, we present experimental data showing that acute intracortical delivery of BDNF (2 microg/2 microl per side) reverses the deficit in CTA memory caused by inhibition of insular cortex protein synthesis due to anisomycin administration (100 microg/microl per side) in male adult Wistar rats. These findings suggest that BDNF is a protein synthesis product essential for neocortical long-term memory storage.     

Unmitigated communion and health among adolescents with and without diabetes: the mediating role of eating disturbances

The authors examined the implications of unmitigated communion--a focus on others to the exclusion of the self--for psychological and physical health among adolescents with (n = 132) and without (n = 131) diabetes times/during a 1-year period. Unmitigated communion predicted greater psychological distress and lower levels of competence cross-sectionally and longitudinally, controlling for sex, pubertal status, and communion. Health status moderated some longitudinal relations, such that relations held only for adolescents with diabetes. In addition, unmitigated communion was associated with poor metabolic control and predicted a deterioration in metabolic control over the year for adolescents with diabetes. Unmitigated communion also was associated with disturbed eating behavior cross-sectionally and longitudinally, and disturbed eating behavior explained some of the relations of unmitigated communion to psychological but not physical health outcomes.     

Power in methods: language to infants in structured and naturalistic contexts

Methods can powerfully affect conclusions about infant experiences and learning. Data from naturalistic observations may paint a very different picture of learning and development from those based on structured tasks, as illustrated in studies of infant walking, object permanence, intention understanding, and so forth. Using language as a model system, we compared the speech of 40 mothers to their 13‐month‐old infants during structured play and naturalistic home routines. The contrasting methods yielded unique portrayals of infant language experiences, while simultaneously underscoring cross‐situational correspondence at an individual level. Infants experienced substantially more total words and different words per minute during structured play than they did during naturalistic routines. Language input during structured play was consistently dense from minute to minute, whereas language during naturalistic routines showed striking fluctuations interspersed with silence. Despite these differences, infants' language experiences during structured play mirrored the peak language interactions infants experienced during naturalistic routines, and correlations between language inputs in the two conditions were strong. The implications of developmental methods for documenting the nature of experiences and individual differences are discussed.     

Proactive interference between cues trained with a common outcome in first-order Pavlovian conditioning

The nature of interference between cues (X, A) trained apart with a common outcome (O; an unconditioned stimulus) was explored by assessing proactive interference in first-order Pavlovian conditioning (i.e., A-O, X-O, resulting in attenuated responding to X). Three lick-suppression studies were conducted with water-deprived rats. Posttraining extinction of the interfering cue (A) attenuated proactive interference (Experiment 1), which mirrors the observation that extinction of the competing cue can reduce competition between cues trained together (e.g., recovery from overshadowing). Proactive interference was also attenuated with manipulations known to attenuate interference between outcomes trained apart (e.g., counterconditioning), namely reminder cues (Experiment 2) and renewal (Experiment 3). The findings suggest that similar processes underlie interference between cues trained apart, between cues trained together, and between outcomes trained apart.     

The role of cortical cholinergic pre- and post-synaptic receptors in taste memory formation

A number of studies have implicated cholinergic activity in the mediation of learning and memory processes. However, the specific role of muscarinic receptors in memory formation mechanisms is less known. The aim of the present study is to evaluate the effects of muscarinic antagonist M2 presynaptic receptor, AFDX-116 (0.5mM) and M1 and M3 post-synaptic receptor pirenzepine (100mM), as well as a non-selective muscarinic antagonist, scopolamine (136mM), in the insular cortex (IC) during acquisition and retrieval of conditioned taste aversion (CTA). In addition, we evaluate the effects of those antagonists in cortical ACh release by in vivo microdialysis and the effects on the induction of in vivo LTP in the BLA-IC projection. The results showed that the cortical microinjections of scopolamine and pirenzepine, but not AFDX-116, produced significant disruption in the acquisition of CTA, without effects during retrieval. Microinjections of scopolamine and AFDX-116 produced significant cortical ACh release, while infusions of pirenzepine did not produce any release. Application of scopolamine and pirenzepine diminished induction of LTP in the BLA-IC projection, but not AFDX-116, as compared with vehicle. The induction of BLA-CI LTP seems to be modulated by post-synaptic muscarinic acetylcholine receptors and not by pre-synaptic muscarinic receptors. These results suggest a differential involvement of cholinergic receptors during acquisition and retrieval of aversive memory formation, as well as a differential role of muscarinic receptors in the biochemical and electrophysiological processes that may underlay aversive memory.     

Idiopathic physical symptoms: a common manifestation of psychiatric disorders in primary care

Worldwide, patients with common mental disorders, such as depression and anxiety, have a tendency to present first to primary care exhibiting idiopathic physical symptoms. Typically, these symptoms consist of pain and other physical complaints that remain medically unexplained. While in the past, traditional psychopathology emphasized the relevance of somatic presentations for disorders, such as depression, in the last few decades, the "somatic component" has been neglected in the assessment and treatment of psychiatric patients. Medical specialties have come up with a variety of "fashionable" labels to characterize these patients and the new psychiatric nomenclatures, such as the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, attempt to classify these patients into a separate "somatoform disorders" category. These efforts fall short, and revisionists are asking altogether for the elimination of "somatoform disorders" from future nomenclatures. This review emphasizes the importance of idiopathic physical symptoms to the clinical phenomenology of many psychiatric disorders, offers suggestions to the diagnostic conundrum, and provides some hints for the proper assessment and management of patients with these common syndromes.     

Sources of acute stress, cognitive appraisal, and coping strategies among highly skilled Mexican and U.S. competitive tennis players

The purpose of the present investigation was to identify sources of acute stress, cognitive appraisal (i.e., perceived controllability), and the use of coping strategies as a function of culture among highly skilled tennis players from Mexico and the United States. Participants were 112 competitive tennis players, 54 of whom were from Mexico (44 boys, 10 girls), and 58 of whom were from the United States (30 boys, 28 girls). A qualitative analysis indicated that the most common sources of acute stress in tennis include "receiving negative comments from coaches and relatives" and "opponent cheating." The authors adapted the COPE Instrument (C. Carver, M. F. Scheier, & J. K. Weintraub, 1989) to ascertain the athletes' use of coping strategies. Regression analysis assessed the extent to which culture predicted the athletes' perceived controllability of the stressors and their use of coping strategies. The results indicated that culture significantly predicted both perceived controllability and the use of coping strategies. The authors discussed implications for the role of culture in predicting cognitive appraisal and coping in sport.