Visual identification and spatial location in Alzheimer's disease

Twelve patients with Alzheimer's disease (AD) and 15 healthy elderly control subjects were shown sets of luminance-defined letters, texture-defined letters, luminance-defined squares, and texture-defined squares. They were asked to name the letters or point to the target square on each page. The stimuli were graded into four levels of difficulty based on the amount of contrast between the figure and the background. Performance was measured in terms of the maximum level of difficulty at which the participant correctly identified or located the three figures. Contrary to expectations, no significant difference was found between the performance of AD patients and control subjects on texture discrimination tasks vs. luminance discrimination tasks. However, results indicate that AD patients are impaired in performing a task requiring them to locate a texture-defined target of known shape in a noisy background field. By contrast, AD patients show no significant deficit in a task requiring them to locate a texture-defined shape in a known location. This argues that the observed deficit in the location task is not due to a failure in the system that discriminates target texture from background texture (since both location and identification tasks require the same textural discriminations), but rather to an impairment of the system responsible for "finding things" (i.e., locating known targets at unknown locations). This observation suggests that AD patients may suffer selective damage to the dorsal "Where" pathway, which is responsible for localizing objects in space.     

The depth and selectivity of suppression in binocular rivalry

Binocular rivalry occurs when the two eyes are presented with incompatible stimuli and the perceived image alternates between the two stimuli. The aim of this study was to find out whether the periodic perceptual loss of a monocular stimulus during binocular rivalry is mirrored by a comparable loss of contrast sensitivity. We presented brief test stimuli to one eye while its conditioning stimulus was dominant or suppressed. The test stimuli were varied widely across four stimulus domains--namely, the relative stimulation of medium- and long-wavelength-sensitive cones, duration, spatial frequency, and grating orientation. The result in each case was the same. Suppression depended slightly or not at all on the type of test stimulus, and contrast sensitivity during suppression was around 64% of that during dominance. The effect of suppression on sensitivity is therefore very weak, relative to its effect on the perceived image. Furthermore, suppression was largely independent of the similarity between the conditioning and the test stimuli, indicating that our results are better explained by eye suppression than by stimulus suppression. A model is presented to account for the small, monocular sensitivity loss during suppression: It assumes that test detection precedes conditioning stimulus perception in the visual pathway.     

The effects of self-brand connections on responses to brand failure: A new look at the consumer–brand relationship

We argue that consumers with high self-brand connections (SBC) respond to negative brand information as they do to personal failure — they experience a threat to their positive self-view. After viewing negative brand information, high (vs. low) SBC consumers reported lower state self-esteem. Consumers with high SBC also maintained favorable brand evaluations despite negative brand information. However, when they completed an unrelated self-affirmation task, they lowered their brand evaluations the same as low SBC consumers. This finding suggests that high SBC consumers' reluctance to lower brand evaluation might be driven by a motivation to protect the self rather than the brand.     

A latent profile analysis of Asian American men's and women's adherence to cultural values

The goal of this study was to identify diverse profiles of Asian American women's and men's adherence to values that are salient in Asian cultures (i.e., conformity to norms, family recognition through achievement, emotional self-control, collectivism, and humility). To this end, the authors conducted a latent profile analysis using the 5 subscales of the Asian American Values Scale-Multidimensional in a sample of 214 Asian Americans. The analysis uncovered a four-cluster solution. In general, Clusters 1 and 2 were characterized by relatively low and moderate levels of adherence to the 5 dimensions of cultural values, respectively. Cluster 3 was characterized by the highest level of adherence to the cultural value of family recognition through achievement, whereas Cluster 4 was typified by the highest levels of adherence to collectivism, emotional self-control, and humility. Clusters 3 and 4 were associated with higher levels of depressive symptoms than Cluster 1. Furthermore, Asian American women and Asian American men had lower odds of being in Cluster 4 and Cluster 3, respectively. These findings attest to the importance of identifying specific patterns of adherence to cultural values when examining the relationship between Asian Americans' cultural orientation and mental health status.     

Parent involvement in school: English speaking versus Spanish speaking families

The purpose of the present study was to explore the relationships between three predictor variables (attitude toward school, parent-child communication, and school commitment action) and the criterion variable (parent involvement) in a representative sample and to examine if these relationships were consistent across three groups (English speaking Caucasian family, English speaking Latino family, and Spanish speaking Latino families). Using a national database (N = 9.841), multi-group SEM analyses were conducted to investigate the relationship between three predictor variables and the criterion variable in three family groups. While all three predictor variables significantly predicted parent involvement in English speaking Caucasian and Latino families, only two variables (parent-child communication and school commitment actions), significantly predicted parent involvement in Spanish speaking Latino families. The results of this study suggest that when administrators, teachers and counselors in school strive to share specific school-related information with Latino families, Spanish speaking families are more likely to become involved with schools.     

Development of Clinical Psychology and Mental Health Resources in Vietnam

In this paper, we discuss development of the Vietnam National University graduate Clinical Psychology Program, which has the goal of training both Vietnamese researchers who will develop and evaluate culturally appropriate mental health treatments, as well as Vietnamese clinicians who will implement and help disseminate these evidence-based treatments. We first review the background situation in Vietnam regarding mental health, and its infrastructure and training needs, and discuss the process through which the decision was made to develop a graduate program in clinical psychology as the best approach to address these needs. We then review the development process for the program and its current status, and our focus on the schools as a site for service provision and mental health task shifting. Finally, we outline future goals and plans for the program, and discuss the various challenges that the program has faced and our attempts to resolve them.     

Reliability and validity of a bilingual measure of religiosity in English and Vietnamese: preliminary results from a pilot study

This study reports preliminary psychometric findings for a seven-item religiosity scale in a community-based sample of Vietnamese Americans ages 18 to 83 years (N = 119; 58% women, 42% men). A bilingual survey was distributed to Vietnamese who were evacuated during Hurricane Katrina and had returned after the disaster. Internal consistency, factorial structure validity, and criterion validity were evaluated on the scale items. The bilingual scale had good internal consistency. While exploratory and confirmatory factor analysis results provided support for a two-factor structure which captured Religious Involvement and Religious Coping, a one-factor model had slightly better fit. Individuals who scored high on the religiosity scale reported a significantly lower score on their stressful experiences during the hurricane, providing evidence of criterion validity.     

ExpTime Tableau Decision Procedures for Regular Grammar Logics with Converse

Grammar logics were introduced by Fariñas del Cerro and Penttonen in 1988 and have been widely studied. In this paper we consider regular grammar logics with converse (REG ^c logics) and present sound and complete tableau calculi for the general satisfiability problem of REG ^c logics and the problem of checking consistency of an ABox w.r.t. a TBox in a REG ^c logic. Using our calculi we develop ExpTime (optimal) tableau decision procedures for the mentioned problems, to which various optimization techniques can be applied. We also prove a new result that the data complexity of the instance checking problem in REG ^c logics is coNP-complete.     

A Game a Day Keeps Cognitive Decline Away? A Systematic Review and Meta-Analysis of Commercially-Available Brain Training Programs in Healthy and Cognitively Impaired Older Adults

Neuropsychology Review - The rising prevalence rates of age-related cognitive impairment are a worldwide public concern, bringing about a surge in the number of “brain training”...     

The Beneficial Role of Spiritual Counseling in Heart Failure Patients

To ascertain the beneficial role of spiritual counseling in patients with chronic heart failure. This is a pilot study evaluating the effects of adjunct spiritual counseling on quality of life (QoL) outcomes in patients with heart failure. Patients were assigned to “religious” or “non-religious” counseling services based strictly on their personal preferences and subsequently administered standardized QoL questionnaires. A member of the chaplaincy or in-house volunteer organization visited the patient either daily or once every 2 days throughout the duration of their hospitalization. All patients completed questionnaires at baseline, at 2 weeks, and at 3 months. Each of the questionnaires was totaled, with higher scores representing positive response, except for one survey measure where lower scores represent improvement (QIDS-SR16). Twenty-three patients (n = 23, age 57 ± 11, 11 (48 %) male, 12 (52 %) female, mean duration of hospital stay 20 ± 15 days) completed the study. Total mean scores were assessed on admission, at 2 weeks and at 3 months. For all patients in the study, the mean QIDS-SR16 scores were 8.5 (n = 23, SD = 3.3) versus 6.3 (n = 18, SD = 3.5) versus 7.3 (n = 7, SD = 2.6). Mean FACIT-Sp-Ex (version 4) scores were 71.1 (n = 23, SD = 15.1) versus 74.7 (n = 18, SD = 20.9) versus 81.4 (n = 7, SD = 8.8). The mean MSAS scores were 2.0 (n = 21, SD = 0.6) versus 1.8 (n = 15, SD = 0.7) versus 2.5 (n = 4, SD = 0.7). Mean QoL Enjoyment and Satisfaction scores were 47.2 % (n = 23, SD = 15.0 %) versus 53.6 % (n = 18, SD = 16.4 %) versus 72.42 % (n = 7, SD = 22 %). The addition of spiritual counseling to standard medical management for patients with chronic heart failure patients appears to have a positive impact on QoL.