Altered emotional and motivational processing in the transgenic rat model for Huntington's disease

Huntington disease (HD) is caused by an expansion of CAG repeat in the Huntingtin gene. Patients demonstrate a triad of motor, cognitive and psychiatric symptoms. A transgenic rat model (tgHD rats) carrying 51 CAG repeats demonstrate progressive striatal degeneration and polyglutamine aggregates in limbic structures. In this model, emotional function has only been investigated through anxiety studies. Our aim was to extend knowledge on emotional and motivational function in symptomatic tgHD rats. We subjected tgHD and wild-type rats to behavioral protocols testing motor, emotional, and motivational abilities. From 11 to 15 months of age, animals were tested in emotional perception of sucrose using taste reactivity, acquisition, extinction, and re-acquisition of discriminative Pavlovian fear conditioning as well as reactivity to changes in reinforcement values in a runway Pavlovian approach task. Motor tests detected the symptomatic status of tgHD animals from 11 months of age. In comparison to wild types, transgenic animals exhibited emotional blunting of hedonic perception for intermediate sucrose concentration. Moreover, we found emotional alterations with better learning and re-acquisition of discriminative fear conditioning due to a higher level of conditioned fear to aversive stimuli, and hyper-reactivity to a negative hedonic shift in reinforcement value interpreted in term of greater frustration. Neuropathological assessment in the same animals showed a selective shrinkage of the central nucleus of the amygdala. Our results showing emotional blunting and hypersensitivity to negative emotional situations in symptomatic tgHD animals extend the face validity of this model regarding neuropsychiatric symptoms as seen in manifest HD patients, and suggest that some of these symptoms may be related to amygdala dysfunction.     

Optimism facilitates the utilisation of prior cues

It has been shown that optimists tend to rely more on their prior expectations than sensory input when making decisions of an intense nature (Geers & Lassiter, 2002). We investigated the degree to which this tendency persists over a range of discrepancies between prior cues and actual stimuli. Eighty‐seven participants were shown a subset of happy, sad and fearful pictures drawn from the Ekman facial expressions of emotion (Ekman & Oster, 1979). Each picture was preceded by a verbal cue indicating the impending emotional expression and intensity. The displayed pictures were either in agreement, slightly discrepant or very discrepant with the cue. Participants rated the extent to which they agreed/disagreed with the expectation cue. Probit signal detection models were used to produce acquiescence for each subject at each level of discrepancy. Correlation analysis was performed on acquiescence and dispositional optimism scores. There was a significant correlation between all acquiescence scores for levels of discrepancies and dispositional optimism. Optimism appears to be a trait associated with acquiescence. The apparent tendency of optimists to comply may be due to a cognitive style that relies on expectations, such that it takes them longer to recognise the extent of discrepancy between expectations and incoming information. Copyright © 2010 John Wiley & Sons, Ltd.     

The magic,the life,the others: how can the imaginative dimension in reflective practice be used with student teachers? A learning experience through a self-study

In this article the author reflects upon the place imagination has in education and argues that imagination for adults is an important part of the reflective practice. The article explores the importance of going beyond the traditional way of thinking to capture the essence of understanding teaching and learning practice. The goal of this self-study is to create a way of professional development as a teacher educator which the author could utilise with teacher students. To accomplish that, the author travels to the three (imaginary) lands of reflective practice, and applies this as a way of reflective learning. The author demonstrates how reflective practices can draw together a dialogue between the embodied experience and understandings based on imaginative meanings. The author argues that reflective practice could benefit from a perspective that focuses on imaginative thoughts and more creative discussion in all aspects of education. Furthermore, to enhance students’ reflective learning one must first and foremost be able to grasp the imaginative element within oneself in order to improve students’ learning through reflective practice.     

The role of psychological defences in moderating between trauma and post‐traumatic symptoms among Palestinian men

Psychological defences are conceptualized as protective processes that help individuals to maintain their integrity in the face of threat and danger. Accordingly, their role in defending trauma victims from post‐traumatic symptoms was examined. The sample consisted of 128 Palestinian male political ex‐prisoners who had reported various degrees of torture and ill‐treatment. The first aim was to analyze the dimensionality and distribution of different defence mechanisms. The second was to examine which defences would moderate the association between the reported torture and ill‐treatment and the post‐traumatic symptoms (PTS). Third, the direct associations between reported torture and ill‐treatment and defences and between the defences and symptoms were explored. Defence mechanisms were assessed by a 40‐item version of the Defense Style Questionnaire (DSQ), and Post‐traumatic symptoms by the Harvard Trauma Questionnaire (HTQ), and experiences of torture and ill‐treatment by a scale developed for that purpose. The results show, first, that the men used predominantly mature defences such as anticipation, sublimation, suppression, and rationalization, but also relatively frequently somatization and dissociation, which are characteristic responses among trauma victims. Second, the principal component analysis revealed four defence dimensions, differentiated by the level of maturity and the approach to reality: the mature reality‐based, the consciousness‐limiting, the immature reality‐escaping, and the immature reality‐distorting defences. Third, against our hypothesis, the moderating analyses indicated that the reported torture and ill‐treatment were relatively more associated with vigilance, avoidance, and intrusion symptoms if men used consciousness‐limiting defences. Yet as expected, the mature reality‐based defences did not show a protective effect. Furthermore, a high level of reported torture and ill‐treatment was associated with a low level of the mature reality‐based defences, but not with a high level of immature defences. Last, similarly to earlier studies, the immature reality‐distorting and immature reality‐escaping defences associated directly with high, and mature reality‐based defences with low, levels of PTS‐symptoms.     

Attractive memory: High destination memory for attractive faces

Research has demonstrated that destination memory (i.e., the ability to remember to whom information was previously told) can be influenced by characteristics (e.g., emotional expressions and age) of the destination. Building on this literature, we investigated whether destination memory can be influenced by the attractiveness of the destination. We invited participants to give information on attractive faces, unattractive faces, or neither‐attractive‐nor‐unattractive faces. On a recognition test, they were invited to decide to whom each piece of information had been previously told. Results demonstrated higher destination memory (1) for attractive faces than for neither‐attractive‐nor‐unattractive faces, and (2) for unattractive faces than for neither‐attractive‐nor‐unattractive faces. We attribute the higher destination memory for attractive and unattractive destinations to their distinctiveness compared with neutrally attractive destinations. We also provide some attentional explanations for the high memory for attractive and unattractive destinations.     

OBSERVATION AND COMPARISON OF MEALTIME BEHAVIORS IN A SAMPLE OF CHILDREN WITH AVOIDANT/RESTRICTIVE FOOD INTAKE DISORDERS AND A CONTROL SAMPLE OF CHILDREN WITH TYPICAL DEVELOPMENT

Despite widespread use of behavioral observations to evaluate child feeding behaviors in research and clinical practice, few studies have comprehensively characterized mealtimes or identified features that differentiate children with and without disordered feeding; these were the aims of the current study. Mealtime observations were conducted for 18 children with avoidant restrictive food intake disorder (ARFID) and 21 typically developing children. Observations were coded inductively, and associations between disorder and observed mealtime actions were examined. Most behaviors were observed across both clinical and nonclinical mealtimes, and many did not differ in frequency between children with and without ARFID. However, significant group differences were observed in the frequencies of behaviors relating to food intake, visual and physical engagement with feeding, and movement during mealtimes. The comparability of behaviors across clinical and nonclinical groups suggests that eating behaviors exist on a continuum from “normal” to “abnormal,” with group differences relating to frequency rather than type of behavior. The behavioral differences observed in this study suggest that identification of children with ARFID should focus on child engagement with food and restlessness during mealtimes. Reliance on emotional and escape‐maintained behaviors will lead to underrecognition of families in need of clinical support.     

The first signs of prospective memory

We conducted a study to examine the impact of motivation and length of delay on performance on prospective memory (PM) tasks in 2-year of children. A total of 158 children aged exactly 24 months were asked to perform a naturalistic PM task. Length of delay (10?min; 35?min) and motivation (high; very high) were between-subjects factors. Two thirds of children had to be excluded from the analysis because of poor retrospective memory for the PM task instructions which were no longer remembered at the end of the session. For the children who did remember the instructions, both motivation and delay had significant effects on PM. Also, their PM performance was reliably above zero, even after the long delay. The findings indicate that when children as young as 24 months are able to remember the PM task instructions they can reliably succeed in PM tasks that are intrinsically motivating for them.     

More emotional facial expressions during episodic than during semantic autobiographical retrieval

There is a substantial body of research on the relationship between emotion and autobiographical memory. Using facial analysis software, our study addressed this relationship by investigating basic emotional facial expressions that may be detected during autobiographical recall. Participants were asked to retrieve 3 autobiographical memories, each of which was triggered by one of the following cue words: happy, sad, and city. The autobiographical recall was analyzed by a software for facial analysis that detects and classifies basic emotional expressions. Analyses showed that emotional cues triggered the corresponding basic facial expressions (i.e., happy facial expression for memories cued by happy). Furthermore, we dissociated episodic and semantic retrieval, observing more emotional facial expressions during episodic than during semantic retrieval, regardless of the emotional valence of cues. Our study provides insight into facial expressions that are associated with emotional autobiographical memory. It also highlights an ecological tool to reveal physiological changes that are associated with emotion and memory.     

The Sense of Quality of Life and Religious Strategies of Coping with Stress in Prison Inmates

The aim of the presented research was to analyze differences in religious strategies of coping with stress in a group of prison inmates characterized by different levels of the sense of quality of life—general, psychophysical, psychosocial, personal, and metaphysical. The participants were 390 males, aged 19–68 years, serving sentences in prisons in Poland. The measures used were the Sense of Quality of Life Questionnaire by M. Stra?-Romanowska and K. I. Pargament’s RCOPE Questionnaire. As expected, individuals with a high sense of quality of life—both general and pertaining to specific dimensions—more often chose positive religious strategies, whereas participants with a low sense of quality of life more often chose negative strategies. The exception was the metaphysical aspect of the quality of life: individuals with a high intensity of this dimension more often chose some of the positive as well as negative religious strategies.