A test for psychometric function shift

A nonparametric, small-sample-size test for the homogeneity of two psychometric functions against the left- and right-shift alternatives has been developed. The test is designed to determine whether it is safe to amalgamate psychometric functions obtained in different experimental sessions. The sum of the lower and upper p-values of the exact (conditional) Fisher test for several 2 × 2 contingency tables (one for each point of the psychometric function) is employed as the test statistic. The probability distribution of the statistic under the null (homogeneity) hypothesis is evaluated to obtain corresponding p-values. Power functions of the test have been computed by randomly generating samples from Weibull psychometric functions. The test is free of any assumptions about the shape of the psychometric function; it requires only that all observations are statistically independent.     

The Buddha And The Birch Tree: The Great Pine Forest Monastery And The Localization Of Vietnamese Buddhism To Canada

The Great Pine Forest Monastery was established in the Laurentian Mountains, north of Montreal, by the Union of Vietnamese Buddhist Churches in Canada in 1988. Its establishment represented, in the minds of the founders, the localization of Vietnamese Buddhism to Canadian soil. The process has, however, been a difficult one and the new acting leader of the monastery is not always optimistic that Buddhism can flourish in Canada, with particular concerns about second and third generation Vietnamese Canadians. This paper will look at the difficult navigation between tradition and adaptation that this Vietnamese Buddhist organization is undergoing, with a particular focus on the obstacles that have emerged for the development of a monastic sangha in Canada.     

Construction Of Reality Or Dependent Origination? From Scientific Psychotherapy To Responsible Attention

The term ‘postmodernism’ has carved itself a niche in everyday, and specialised, vocabulary. We understand it as being the new mentality that emerges from the critique of modernity. This transformation, which has been underway since the second half of the twentieth century, undermines the foremost myth of the modern world, that we can discover an objective and stable truth, that is to say independent and lasting. This change is affecting all areas of human knowledge, from philosophy to physics, as well as human practices and experiences. Its origins are to be found in the theories that label themselves critical, starting with Marxism and existentialism, and in further developments such as hermeneutics, symbolic interactionism, post-structuralism, ethnomethodology, deconstructionism, and others. In this article we wish to recover one of the principal ideas of this change of mentality, the idea of ‘construction of reality’ and contrast it with ‘dependent origination’ (Paticcasamuppada) characteristic of the Dharma, a system of liberation from suffering synthesised by Buddha. We are interested in this relationship in the specific field of Psychotherapy, or in the broader field of Integral Psychology. To this end, firstly we inquire how constructivism has made a space for itself in the scientific world; we then address the constructivist features of the Dharma.     

Precursors and Underlying Processes of Adolescents' Online Self-Disclosure: Developing and Testing an “Internet-Attribute-Perception” Model

This study developed and tested an “Internet-attribute-perception” model that explains how self-disclosure develops in instant messaging (IM) interactions. Following hyperpersonal communication theory, two attributes of computer-mediated communication (i.e., reduced nonverbal cues and controllability) were assumed to be responsible for increased online self-disclosure in IM. However, our model posed that any actual effects of these attributes would depend on users' perceptions of the relevance of these attributes. Furthermore, our model posed that these perceptions would mediate the relationship between personality characteristics (i.e., pri vate and public self-consciousness, and social anxiety) and online self-disclosure. Using structural equation modeling on a sample of 1,203 Dutch adolescents, we found that adolescents' perceptions of the relevance of reduced nonverbal cues and controllability encouraged their feelings of disinhibition, which in turn increased their online self-disclosure. As expected, private and public self-consciousness and social anxiety stimulated adolescents' perceptions of the relevance of reduced nonverbal cues and controllability, but did not directly influence online self-disclosure. The study shows the vital role of users' perceptions of CMC attributes in Internet-effects research.     

The influence of aging on poststroke depression using a rat model via middle cerebral artery occlusion

Poststroke depression (PSD) is the most frequent psychological sequela following stroke. While previous studies describe the impact of age on brain infarct volume, brain edema, and blood–brain barrier (BBB) breakdown following ischemia, the role of age on PSD has yet to be described. Here, we examine the influence of age on PSD progression in a rat model of PSD by middle cerebral artery occlusion (MCAO). One hundred forty-three rats were divided into three groups. 48 rats 20 weeks of age underwent a sham procedure, 51 rats 20 weeks of age had MCAO, and 44 rats 22–26 months of age had MCAO. Groups were further divided into two subgroups. The first subgroup was used to measure infarct lesion volume, brain edema, and BBB breakdown at 24 h. In the second subgroup at 3 weeks after MCAO, rats were subjected to a sucrose preference test, two-way shuttle avoidance task, forced swimming test, and a brain-derived neurotrophic factor (BDNF) protein level measurement. Total and striatal infarct volume, brain edema, and BBB breakdown in the striatum were increased in older rats, as compared with younger rats. While both old and young rats exhibited depressive-like behaviors on each of the behavioral tests and lower BDNF levels post-MCAO, as compared with control rats, there were no differences between old and young rats. Although older rats suffered from larger infarct volumes, increased brain edema and more BBB disruption following MCAO, the lack of behavioral differences between young and old rats suggests that there was no effect of rat age on the incidence of PSD.     

Implicit visual learning and the expression of learning

Although the existence of implicit motor learning is now widely accepted, the findings concerning perceptual implicit learning are ambiguous. Some researchers have observed perceptual learning whereas other authors have not. The review of the literature provides different reasons to explain this ambiguous picture, such as differences in the underlying learning processes, selective attention, or differences in the difficulty to express this knowledge. In three experiments, we investigated implicit visual learning within the original serial reaction time task. We used different response devices (keyboard vs. mouse) in order to manipulate selective attention towards response dimensions. Results showed that visual and motor sequence learning differed in terms of RT-benefits, but not in terms of the amount of knowledge assessed after training. Furthermore, visual sequence learning was modulated by selective attention. However, the findings of all three experiments suggest that selective attention did not alter implicit but rather explicit learning processes.     

Spatial compatibility interference effects: a double dissociation between two measures

ABSTRACT

In spatial compatibility tasks, when the spatial location of a stimulus is irrelevant it nevertheless interferes when a response is required in a different spatial location. For example, response with a left key-press is slowed when the stimulus is presented to the right as compared to the left side of a computer screen. However, in some conditions this interference effect is not detected in reaction time (RT) measures. It is typically assumed that the lack of effect means the irrelevant spatial code was not analysed or that the information rapidly decayed before response. However, we show that even in conditions where there appears to be no spatial interference when measuring RTs, effects can nevertheless be detected after response when recording facial electromyography responses. This dissociation between two measures highlights the importance of diverging methods to investigate visuomotor processes as conclusions based on only one measure can be misleading.     

Pro-criminal attitudes,intervention, and recidivism

We review the recent research literature on pro-criminal attitudes (PCAs) as a causal factor of recidivism with a focus on studies on the effectiveness of offender treatment programs targeting PCAs to prevent recidivism. The main conclusions that can be derived from the literature are: (1) the evidence supports the hypothesis that PCAs are related to reoffending; (2) most investigated offender treatment programs tend to reduce PCAs, although the general lack of adequate control group designs does not rule out alternative explanations for this reduction; and (3) there is no conclusive empirical evidence that intervention programs designed to reduce PCAs are effective in reducing recidivism. Empirical research in this area lacks the theoretical and methodological rigor to test causal models of the influence of treatment on reducing PCAs, and effects of PCAs on recidivism. Limitations of the empirical evidence are related to inadequate research designs and/or suboptimal data analysis strategies. Recommendations concerning optimized research designs and data analysis strategies that are likely to provide more conclusive evidence on the relation of PCAs, PCA treatment, and recidivism are given.     

Other People’s Errors

The question of when other people’s bad acts belong on our moral ledger arises in a number of different scenarios. Each scenario has received some philosophical attention, but no one has noted the structural similarities of these various scenarios or the implications of a proposed approach to one for how the others should be approached. That is the ambition of this article. In it, seemingly disparate moral phenomena—blunt rules, preemptive restrictions, moral blackmail, complicity, retreat and proportional response, and the duty to rescue from a peril one has caused—are shown to have similar structures and thus to require similar moral approaches.