Effects of reversible inactivation of locus coeruleus on long-term potentiation in perforant path-DG synapses in rats

The locus coeruleus (LC) is the main source of noradrenergic innervations to the forebrain and the hippocampal formation but does not receive noradrenergic projections itself. Previous studies have suggested that hippocampal neural response is modulated by the noradrenergic pathway and that the experimental activation of the LC can potentiate hippocampal responses. Most studies have suggested that the noradrenergic system has controversial effects on long-term potentiation (LTP) in hippocampal neurons, because its influence on synaptic plasticity in perforant path-DG synapses is ambiguous. The aim of this article was to study the LC's role in baseline activity and LTP in perforant path-DG cells of hippocampus by in vivo LC inactivation. Rats were anesthetized with urethane, and LC was temporarily suppressed by intra-LC injection of lidocaine. Population spike (PS) amplitude and excitatory postsynaptic potential (EPSP) slope in DG were recorded 10 min before and 5, 10, 20, 40, 60, and 120 min after tetanization (400 Hz). Saline or lidocaine was injected during the baseline recording (experiment 1), 5 min before tetanus (experiment 2), and 5 min after tetanus (experiment 3). The results from this study indicated that the LC inactivation has no effect on baseline activity of granular cells or maintenance of LTP after tetanization. Moreover, LC inactivation before tetanus had no effect on LTP induction but decreased PS-LTP amplitude 60 and 120 min after tetanization. Taken together, the LC noradrenergic system likely influences LTP induction in later time periods while it has no effect on LTP in earlier time periods.     

Reliability and validity of the Oxford Happiness Inventory among university students in Iran

The aim of the present study was to examine the internal reliability, content validity, construct validity, and concurrent validity of the Persian translation/Farsi version of the Oxford Happiness Inventory. The Oxford Happiness Inventory and Fordyce Happiness Inventory were completed by a sample of 727 Iranian university students. Findings confirmed the internal reliability, construct, and concurrent validity of the Oxford Happiness Inventory. Thus, it can be recommended for use as a trait-measure of happiness among Iranian samples.     

Context As a Critical Dimension of Multicultural Counseling: Articulating Personal,Professional, and Institutional Competence

Multicultural counseling standards and competencies (D. W. Sue, P. Arredondo, & R. J. McDavis, 1992) were established to provide consistency and ethical guidelines for practitioners, educators, and organizations. Although there has been general acceptance of this model, the current conceptualization risks superficial interpretation and limited implementation. This article describes a model that addresses the complexity of multicultural competence. The Multicultural Counseling Competency Assessment and Planning Model (MCCAP) enhances the D. W. Sue et al. model by integrating personal, professional, and institutional contexts as critical elements in multicultural competence. The MCCAP model suggests that the complexity of change includes three domains: affective, cognitive, and behavioral learning and competence. The resulting framework integrates self‐assessment and strategic planning to assist counselors, psychologists, and educators in a more complete application of multicultural counseling standards. Las normas de competencia multicultural en la consejería (D. W. Sue, P. Arredondo, & R. J. McDavis, 1992) fueron establecidas para proveer consistencia y guías éticas para consejeros, educadores, y organizaciones. Aunque ha habido aceptación de este modelo por lo general, la conceptualización presente corre el riesgo de ser interpretada superficialmente y de ser implementada incompletamente. Este artículo describe un modelo que trata la complexidad de la competencia multicultural. El Modelo de Evaluación y Planeación de Competencia de Consejería Multicultural (Multicultural Counseling Competency Assessment and Planning Model ‐MCCAP) aumenta sobre el modelo de D. W. Sue et al., al integrar los contextos personales, e institucionales como elementos críticos en la competencia multicultural. Además, el modelo (MCCAP) sugiere que el cambio es complejo y ocurre en très dominios: el afectivo, cognitivo, y de comportamiento, en el aprendizaje de las competencias. El resultato es una estructura que intégra la evaluación personal, planes y estrategias para ayudar a consejeros, psicólogos y educadores en una aplicación mas completa de las normas de consejería multicultural.     

ALTERING THE NEAR‐MISS EFFECT IN SLOT MACHINE GAMBLERS

This study investigated the potential for recreational gamblers to respond as if certain types of losing slot machine outcomes were actually closer to a win than others (termed the near‐miss effect). Exposure to conditional discrimination training and testing disrupted this effect for 10 of the 16 participants. These 10 participants demonstrated high percentages of conditional discrimination testing performance, and the remaining 6 participants failed the discrimination tests. The implications for a verbally based behavioral explanation of gambling are presented.     

Self-Rating of religiosity (SRR) in Iran: validity,reliability, and associations with the Big Five

ABSTRACT

The present research aimed to examine the psychometric properties of the Self-Rating of Religiosity (SRR) in Iran. In addition, the associations between the Persian version of this single-item measure of religiosity and the Big Five personality dimensions were investigated. Study 1 (n?=?51) suggested that the Persian translation of the SRR had adequate test-retest reliability over a three-week period. Study 2 (n?=?228) provided evidence for good convergent validity of the SRR, indexed by strong positive associations with scores on the Duke University Religion Index (DUREL). The Big Five dimensions of personality were measured using the Ten-Item Personality Inventory (TIPI). Moreover, the scores on the SRR were positively associated with Agreeableness (r?=?.23, p?<?.01) and Conscientiousness (r?=?.16, p?<?.05), while negatively associated with Openness to Experience (r?=??.25, p?<?.01). These findings are in line with cross-cultural findings on personality correlates of intrinsic religiosity. Limitations and future directions are discussed.     

Exploring Emotive Verbs in Persian and English Short Stories: A Contrastive Sociopragmatic Approach

Current developments in the areas of discourse analysis and cross-cultural studies have led to an increased interest in the way people of different cultures express their affections on various occasions. Individuals learn how to regulate their emotional reactions according to sociocultural norms of behavior defined by the cultures to which they belong. Accordingly, this article aimed to investigate the linguistic expression of emotions in English and Persian short stories in order to fathom out the impact of culture on the way feelings are expressed cross-culturally. For this purpose, a corpus of eight different English and Persian short stories, four in each language, was selected based on a purposive sampling method. Then, using Devon’s (The origin of emotions, 2006) typology of emotions, different types of emotive verbs were selected as the unit of analysis. Finally, the frequency and percentage values of emotive verb tokens used in these stories were carefully tabulated in terms of types and their respective metalinguistic categories introduced by Wierzbicka (Emotions across languages and cultures: diversity and universals, Cambridge University Press, Cambridge, 1999). The results obtained from the analysis of the targeted corpora reflected that English and Persian writers employ different types of emotive verbs in expressing their feelings. Essentially, the findings of the present study may have important implications for language teachers, material developers, and course designers.     

Natural teeth and cognitive function in humans

A number of neurobiological, psychological and social factors may account for cognitive impairment. In animal studies a relation between dental status and cognitive performance has been found. It is unclear whether such a relation exists for humans. In a first step we compared the performance of 1,351 participants (53% women, 47% men; age M = 54.0) with natural teeth to 487 edentulous participants (59% women, 41% men; age M = 71.3) on 12 cognitive tests. The natural teeth group had a lower mean age, fewer women, more years of education, higher mini-mental state (MMSE), and performed significantly higher on several cognitive tests. In a subsequent analysis, the cognitive performance of a subset of the participants (50-85 years) was examined. In this analysis, 211 had natural dentition and 188 were edentulous. The groups were matched for gender, age, social variables, diseases, stress and MMSE. The cognitive disadvantage of the edentulous group was still apparent. The results suggest that functional natural teeth relate to relatively preserved cognitive functioning in older age.     

Supervision and training in child care: Does reflective supervision foster caregiver insightfulness?

The goal of this study was to explore the effects of reflective and traditional supervision and training on caregiver insightfulness. Caregiver insightfulness, or caregiver ability to understand “motives underlying the child's behavior in a complete, open, and accepting way” (D. Oppenheim, D. Goldsmith, & N. Koren‐Karie, 2004, p. 352) was assessed at two time points with 21 new caregivers at two university‐based childcare sites. Trends suggest that caregiver insightfulness was relatively stable while increased levels of components of caregiver insightfulness over a period of approximately 2.5 months were positively associated with reflective supervision and training. These findings suggest that encouraging caregivers to reflect on their interactions with the children in their care fosters caregivers' ability to see from the child's perspective in an open and accepting way.