Where to sleep next? Evidence for spatial memory associated with sleeping sites in Skywalker gibbons (Hoolock tianxing)

Animal Cognition - Finding suitable sleeping sites is highly advantageous but challenging for wild animals. While suitable sleeping sites provide protection against predators and enhance sleep...     

儿童歧视知觉模型述评

Brown和Bigler提出了儿童歧视知觉模型,分析了歧视知觉的三个影响因素:认知因素、情景因素和个体差异因素,每个因素都包含了多个影响儿童歧视知觉的子因素。该模型展示了这些因素影响儿童歧视知觉的机制。完善该模型需要探讨其与信息加工理论、发展群际理论、主观群体动力学模型的兼容性。歧视知觉的类型需要进一步细化,因此在综合主观群体动力学模型和发展模型的基础上提出了歧视知觉的分类方案。未来研究还要进一步探讨情绪、文化以及年龄因素对儿童歧视知觉的影响,并探讨该模型对歧视干预的意义。     

Cognitive control and attentional functions

Cognitive control is essential to flexible, goal-directed behavior under uncertainty, yet its underlying mechanisms are not clearly understood. Because attentional functions are known to allocate mental resources and prioritize the information to be processed, we propose that the attentional functions of alerting, orienting, and executive control and the interactions among them contribute to cognitive control in the service of uncertainty reduction. To test this hypothesis, we examined the relationship between cognitive control and attentional functions. We used the Majority Function Task (MFT) to manipulate uncertainty in order to evoke cognitive control along with the Revised Attention Network Test (ANT-R) to measure the efficiency and the interactions of attentional functions. A backwards, stepwise regression model revealed that performance on the MFT could be significantly predicted by attentional functions and their interactions as measured by the ANT-R. These results provide preliminary support for our theory that the attentional functions are involved in the implementation of cognitive control as required to reduce uncertainty, though further investigation is needed.     

Health Is Associated With Antiparasite Behavior and Fear of Disease-Relevant Animals in Humans

Evolutionary arms races between humans and parasites resulted in a set of behavioral adaptations that serve as parasite-avoidance mechanisms. We investigated associations among reported health of the respondent, antiparasite behavior, and sensitivity to disgust and fear of disease-relevant and irrelevant animals. Ninety-seven participants (15–19 years old) rated their fear and disgust at 25 colorful pictures of disease-relevant and disease-irrelevant invertebrates. Consistent with previous work, we found that participants reported greater fear and disgust of disease-relevant invertebrates relative to disease-irrelevant invertebrates. Better perceived health correlated with lower fear of disease-relevant invertebrates. Sensitivity to disgust correlated with reported antiparasite behaviors. Contrary to expectations, we found a positive correlation between antiparasite behavior and reported health, which suggests that antiparasite behavior influences perceived health (but not vice versa), and we found that males perform more antiparasite behaviors than females. These results support the idea that disgust and fear of disease-relevant objects are adaptive emotions that prevent contact with contagious objects, especially in individuals with low perceived health.     

A study on purchasing behavior of teenagers in Taiwan: example of counterfeit goods

This study has established a relationship model encompassing such aspects as consumer values, consumer involvement, purchase behavior, and consumer satisfaction. Furthermore, taking counterfeit goods as an example, this study employs factor analysis, reliability analysis, and the structural equation model to verify the relationship between the research aspects. Another major discovery of this study was that teenagers' behavioral purchasing mentality is graphic, hyperlinked, and is geared toward useful situations and functional needs. When they consider their degree of need, they inevitably incorporate many emotional needs. However, their attitude toward counterfeit goods is rational, which is confirmed by the fact that Hypothesis 1 was not supported.     

A Comparison of Imputation Strategies for Ordinal Missing Data on Likert Scale Variables

This article compares a variety of imputation strategies for ordinal missing data on Likert scale variables (number of categories = 2, 3, 5, or 7) in recovering reliability coefficients, mean scale scores, and regression coefficients of predicting one scale score from another. The examined strategies include imputing using normal data models with naïve rounding/without rounding, using latent variable models, and using categorical data models such as discriminant analysis and binary logistic regression (for dichotomous data only), multinomial and proportional odds logistic regression (for polytomous data only). The result suggests that both the normal model approach without rounding and the latent variable model approach perform well for either dichotomous or polytomous data regardless of sample size, missing data proportion, and asymmetry of item distributions. The discriminant analysis approach also performs well for dichotomous data. Naïvely rounding normal imputations or using logistic regression models to impute ordinal data are not recommended as they can potentially lead to substantial bias in all or some of the parameters.     

Children with autism spectrum disorder are more trusting than typically developing children

The current study examined whether children with autism spectrum disorder (ASD) had an indiscriminate trust bias whereby they would believe any information provided by an unfamiliar adult with whom they had no interactive history. Young school-aged children with ASD and their age- and ability-matched typically developing (TD) peers participated in a simple hide-and-seek game. In the game, an experimenter with whom the children had no previous interactive history pointed to or left a marker on a box to indicate the whereabouts of a hidden reward. Results showed that although young school-aged ASD children did not blindly trust any information provided by the unfamiliar adult, they appeared to be more trusting in the adult informant than did their age- and ability-matched TD children.     

Network and mutual support for parents bereaved following the violent deaths of their 12- to 28-year-old children: A longitudinal,prospective analysis

Abstract

Social support provided by bereaved parents' networks was examined in this study. Seven dimensions of support were assessed over time. Of special interest to the investigators were the types and frequency of posttreatment contacts among bereaved parents who participated in an experimental support program. The study compared those who reported high versus low social support and high versus low numbers of network confidants on selected outcome and coping variables. The authors recruited a community-based sample of 171 bereaved mothers and 90 bereaved fathers whose 12- to 28-year-old children had died by accident, suicide, or homicide 4 months previously. Parents were randomly assigned to a 12-week bereavement program or control group. It was expected that intervention group parents would report more social network in involvement and greater satisfaction with support received than control group parents. This hypothesis was only partially supported. Only 20% of the parents who participated in the bereavement program remained in contact after the experimental program ended. Finally, significant differences detected between parents who reported high and low support were minimal and not sustained over time. The number of network confidants did not significantly affect the outcomes examined. However, in general, those with more confidants reported lower symptoms. Additional studies are needed to address these complex issues.     

The association of environmental,individual factors,and dopamine pathway gene variation with smoking cessation

This study aimed to examine whether dopamine (DA) pathway gene variation were associated with smoking cessation, and compare the relative importance of infulence factors on smoking cessation. Participants were recruited from 17 villages of Shandong Province, China. Twenty-five single nucleotide polymorphisms in 8 DA pathway genes were genotyped. Weighted gene score of each gene was used to analyze the whole gene effect. Logistic regression was used to calculate odds ratios (OR) of the total gene score for smoking cessation. Dominance analysis was employed to compare the relative importance of individual, heaviness of smoking, psychological and genetic factors on smoking cessation. 415 successful spontaneous smoking quitters served as the cases, and 404 unsuccessful quitters served as the controls. A significant negative association of total DA pathway gene score and smoking cessation was observed (p < 0.001, OR: 0.25, 95% CI 0.16–0.38). Dominance analysis showed that the most important predictor for smoking cessation was heaviness of smoking score (42%), following by individual (40%), genetic (10%) and psychological score (8%). In conclusion, although the DA pathway gene variation was significantly associated with successful smoking cessation, heaviness of smoking and individual factors had bigger effect than genetic factors on smoking cessation.     

On recognition and self: a discussion based on Nyāya,Mīmāṃsā and Buddhism

The phenomenon of recognition is a point of contention in the debate between the orthodox Hindus and Buddhists on whether the self (ātman) exists. The Hindus, including Naiyāyikas and Mīmā?sakas, argue that recognition evidences the existence of the self, while Buddhist philosopher ?āntarak?ita maintains that there is no self and recognition should be explained in another way. This article examined two disputes, focusing on the two subsidiary aspects of a recognition: memory and self-recognition. For Hindus, it is the existence of the self that makes memory and self-recognition possible. For Buddhists, it is due to the phenomena of memories and self-recognitions that people postulate the existence of the self. I argue that Buddhist explanation of memory is more acceptable, while their debates on self-recognition should be considered as a tie.