The clinical overlap between the corticobasal degeneration syndrome and other diseases of the frontotemporal spectrum: three case reports

The corticobasal degeneration syndrome has been suggested to be part of a complex of conditions (including the different subtypes of frontotemporal dementia and progressive supranuclear palsy), which reflect a spectrum of pathological substrates. This concept is supported by the frequent clinical overlap that can be observed among patients diagnosed with these conditions. We report three clinical cases, characterized by the overlap of the clinical features of corticobasal degeneration syndrome with, respectively, nonfluent progressive aphasia, progressive supranuclear palsy and semantic dementia. Current diagnostic criteria emphasize differences in clinical presentation, which probably reflect the preferential location of pathology in the early stages of disease. However, with disease progression, a considerable clinical overlap can be expected among the different syndromes. This concept should be extended not only to the cognitive and behavioural features of the frontotemporal dementia subtypes, but also to the movement disorders of corticobasal degeneration and supranuclear palsy.     

Support for discriminatory behaviours against immigrants in Italy: Perceived threat and positive beliefs mediate the effect of contact with immigrants

The present study aimed at investigating whether the effects of intergroup contact on support for discriminatory behaviours against immigrants was mediated by perceived threat from immigrants and positive beliefs toward immigrants. Using data from the Italian national survey on “Discrimination by Gender, Sexual Orientation and Ethnic Origin,” which followed a multi-stage stratified cluster sampling procedure, a representative sample of 5509 Italian residents (53.4% women), aged 18 to 74 years, participated. Findings showed that contact with immigrants was negatively related to perceived threat, and positively related to positive beliefs toward immigrants. Mediational analysis conducted by structural equation modelling, indicated that support for discriminatory behaviours was positively associated with perceived threat, and negatively associated with positive beliefs toward immigrants. Both variables together mediated the relationship between contact with immigrants and support for discriminatory behaviours against immigrants; individually, indirect relationships were also significant. To promote interaction between natives and immigrants by reducing the perceived threat and strengthening positive beliefs toward immigrants might lessen support for discriminatory behaviours against immigrants.     

Testing the Δ-∑ hypothesis in the suboptimal choice task: Same delta with different probabilities of reinforcement

In a concurrent-chain procedure, pigeons choose between 2 initial-link stimuli; one is followed by terminal link stimuli that signal reliably whether food will be delivered after a delay; the other is followed by terminal link stimuli that do not signal whether food will be delivered after the delay. Pigeons prefer the former alternative even when it yields a lower overall probability of food. Recently, we proposed the Delta-Sigma (∆-∑) hypothesis to explain the effect: Preference depends on the difference (∆) between the reinforcement probabilities associated with the terminal link stimuli, and the overall probability of reinforcement (∑) associated with the alternative. The hypothesis predicts that, for constant ∑, animals should prefer alternatives with greater ∆ values regardless of the specific probabilities of reinforcement that determine ∆. In 2 experiments, we tested this prediction by comparing a ∆ = .5 against a ∆ = 0 alternative, with the former obtained with different pairs of reinforcement probabilities across conditions. The results supported the hypothesis when the 2 probabilities defining ∆ were significantly greater than 0, but not when one of them was close to 0. The results challenge our theoretical accounts of suboptimal choice and the variables considered to determine pigeons’ preference.     

Recall of word lists is enhanced with increased spreading activation

ABSTRACT

Some evidence exists supporting a relationship between spreading activation in semantic/lexical memory networks and episodic memory. However, the results have been mixed and there have been no investigations examining whether a relationship exists between variability in spreading activation and episodic memory. Hence, we sought to investigate these potential relationships. Thirteen individuals were administered the Hopkins Verbal Learning Test–Revised (HVLT-R) and the Controlled Oral Word Association Test (COWAT). The average word frequency of all the “F” words generated on the COWAT was used as a measure of spreading activation. Variability in spreading activation was assessed by calculating the variability of the word frequencies from the COWAT across time. The results confirmed our hypotheses, with significant negative correlations found between free recall on the HVLT-R and both the average word frequency and measures of variability in spreading activation.     

Religious and spiritual education in disability situations in Italy

In this short article, the authors focus on religious and spiritual education’s potential to offer social and spiritual inclusion for students with a disability. They take the view that the religious and spiritual education teacher in such situations is positioned better when seeing such teaching as a special vocation. They use Italy as the case study by which to explore a religious and spiritual education approach to teaching in disability situations.     

Who am I? The relationship between self‐concept uncertainty and materialism

It is well accepted that materialism may result in a number of negative consequences, hence the importance of improving its understanding. In this paper, we propose that materialism negatively relates to self‐concept uncertainty. Uncertainty about oneself is aversive and those feeling uncertain may use the possession of material objects as a way to reduce the uncertainty. Inasmuch as material objects can serve as concrete signs of self‐worth, self‐concept uncertainty can therefore relate to more materialism. Over two studies, one in Australia and the other in the US, with a total of 390 participants, our research demonstrates that lower clarity about one's self‐concept associates with higher levels of materialism. While this result holds for both genders, this relationship is considerably stronger for women compared to men. We also find that lower self‐concept clarity relates to higher compulsive buying. We further demonstrate that materialism relates to higher positive moods during shopping, and also relates to higher negative moods after shopping, more notably negative moods towards what was purchased. This effect is significant even when controlling for general affective states.     

Reciprocal Relations Between Emotional Self‐Efficacy Beliefs and Ego‐Resiliency Across Time

The present study examined the longitudinal relations of adolescents' self‐reported ego‐resiliency to their emotional self‐efficacy beliefs in expressing positive emotions and in managing negative emotions as they moved into early adulthood. Participants were 239 females and 211 males with a mean age of 17 years (SD = .80) at T1, 19 years (SD = .80) at T2, 21 years (SD = .82) at T3, and 25 years (SD = .80) at T4. A four‐wave cross‐lagged regression model and mediational analyses were used. In a panel structural equation model controlling for the stability of the constructs, reciprocal relationships across time were found between ego‐resiliency and emotional self‐efficacy beliefs related to the expression of positive emotions and to the management of negative emotions. Moreover, the relation between ego‐resiliency assessed at T1 and T3, and ego‐resiliency assessed at T2 and T4, was mediated through emotional self‐efficacy beliefs (at T2 and T3, respectively), and vice versa. The posited conceptual model accounted for a significant portion of variance in ego‐resiliency and has implications for understanding the development of ego‐resiliency.     

Inferring intentions from biological motion: A stimulus set of point-light communicative interactions

We present the first database of communicative interactions reproduced through point-light displays (Communicative Interaction Database). The database contains 20 communicative interactions performed by male and by female couples. For each action, we provide movie files from four different viewpoints, as well as text files with the 3-D spatial coordinates of the point lights, allowing researchers to construct customized versions. By including various types of actions performed with different social motives, the database contains a diverse sample of nonconventional communicative gestures. Normative data collected to assess the recognizability of the stimuli suggest that, for most action stimuli, information in point-light displays is sufficient for clear recognition of the action as communicative, as well as for identification of the specific communicative gesture performed by the actor. The full set of stimuli may be downloaded from http://brm.psychonomic-journals.org/ content/supplemental and from http://ppw.kuleuven.be/labexppsy/lepSite/resources/CID.rar.