Hypnotic assessment based on the Recurrence Quantification Analysis of EEG recorded in the ordinary state of consciousness

The cerebral cortical correlates of the susceptibility to hypnosis in the ordinary states of consciousness have not been clarified. Aim of the study was to characterize the EEG dynamics of subjects with high (highs) and low hypnotisability (lows) through the non-linear method of Recurrence Quantification Analysis (RQA). The EEG of 16 males – 8 highs and 8 lows – was monitored for 1 min without instructions other than keeping the eyes closed, being silent and avoiding movements (short resting), and during 15 min of simple relaxation, that is with the instruction to relax at their best. Highs and lows were compared on the RQA measures of Determinism (DET) and Entropy (ENT), which are related to the signal determinism and complexity. In the short resting condition discriminant analysis could classify highs and lows on the basis of DET and ENT values at temporo-parietal sites. Many differences in DET and all differences in ENT disappeared during simple relaxation, although DET still separated the two groups in the earliest 6 min of relaxation at temporo-parietal sites. Our RQA based approach allows to develop computer-based methods of hypnotic assessment using short-lasting, single channel EEG recordings analyzed through standard mathematical methods.     

Emotion understanding,pictorial representations of friendship and reciprocity in school-aged children

This study examined the relationship between emotional understanding, friendship representation and reciprocity in school-aged children. Two hundred and fifty-one Caucasian 6-year-old children (111 males and 140 females) took part in the study. The Test of Emotion Comprehension (TEC) and the Pictorial Assessment of Interpersonal Relationships (PAIR) were used. Children having a reciprocal friendship and children having a unilateral friendship with a child named as their “best friend” were compared on the emotional understanding task and on their pictorial representations of friendship. Multilevel analyses indicated that friendship status effects were not influenced by classroom-level differences. Results showed that children with reciprocal friendships drew themselves as more similar to and more cohesive with their best friends, and they showed better understanding of emotions, than children having a unilateral friendship. Finally, the implications of these findings for theoretical and empirical research development on friendship are discussed.     

Smiling in newborns during communicative wake and active sleep

Many studies have investigated infant smiling behaviour during wake and active sleep. In the majority of studies authors agreed that two month-old infants exhibit social smiles. However it is not clear if newborns exhibit different kinds of smiles during wake and active sleep to two month-old infants and if the communicative context can affect the quantity and quality of these smiles.The aim of this study was to test if different kinds of communication affects the amount and the quality of smiles during different behavioural states.Smiling behaviour was analyzed during interactive wake (IW) and active sleep (AS), in 40 newborns randomly assigned to 4 groups of 10 newborns each: continuous tactile communication group, discontinuous non periodic tactile communication group, discontinuous periodic tactile communication group, absent communication group. In the total sample the open/closed mouth (social/non social) smiles ratio was 38/5 during IW and 1/28 during AS (p < .001). Moreover these ratios were different between the four groups.Different kinds of tactile communication affect amount and quality of the smiles of newborns during IW and AS. Moreover the morphological difference of the smiles during IW and AS suggested that for newborns the smiling behaviour during IW could have a social meaning, as it does for two month-old infants.     

Emotion regulation moderates relationships between body image concerns and psychological symptomatology

The study investigated the moderating role of emotion regulation (ER) in relationships between body image concerns and psychological symptomatology. A community sample of 533 boys and girls (11-20 years) completed measures assessing body image thoughts and feelings, domain-specific and general ER strategies, drive for thinness, and bulimic, depressive and anxiety symptoms. Results indicated that ER moderated relationships between body image concerns and both bulimic and depressive symptoms, but not relationships between body image concerns and drive for thinness or anxiety symptoms. Adolescents who reported frequent body image concerns were more likely to have higher levels of bulimic symptoms if they tended to use avoidance and internal dysfunctional ER strategies. Furthermore, adolescents who reported frequent body image concerns were more likely to have higher levels of depressive symptoms if they used positive rational acceptance and internal functional strategies infrequently. Implications of the findings for prevention and intervention are discussed.     

The Emotion Regulation Questionnaire for Children and Adolescents (ERQ-CA): a psychometric evaluation

Despite the recognized importance of emotion regulation (ER) for healthy psychological development, ER research has focused predominantly on the developmental periods of infancy, early childhood, and adulthood, while the middle childhood to adolescence years have been relatively neglected. An obstacle to ER research during these periods is the paucity of valid age-appropriate measures. This study reports on the psychometric evaluation of the Emotion Regulation Questionnaire for Children and Adolescents (ERQ-CA), a revision of the adult measure. The ERQ-CA was evaluated with a sample of 827 participants aged between 10 and 18 years. Results indicate sound internal consistency as well as stability over a 12-month period. Sound construct and convergent validity are also demonstrated. It is concluded that the ERQ-CA is a valid age-appropriate measure for investigating the use of 2 specific strategies of ER during the childhood and adolescence developmental periods.     

Eye movement prediction and variability on natural video data sets

We here study the predictability of eye movements when viewing high-resolution natural videos. We use three recently published gaze data sets that contain a wide range of footage, from scenes of almost still-life character to professionally made, fast-paced advertisements and movie trailers. Inter-subject gaze variability differs significantly between data sets, with variability being lowest for the professional movies. We then evaluate three state-of-the-art saliency models on these data sets. A model that is based on the invariants of the structure tensor and that combines very generic, sparse video representations with machine learning techniques outperforms the two reference models; performance is further improved for two data sets when the model is extended to a perceptually inspired colour space. Finally, a combined analysis of gaze variability and predictability shows that eye movements on the professionally made movies are the most coherent (due to implicit gaze-guidance strategies of the movie directors), yet the least predictable (presumably due to the frequent cuts). Our results highlight the need for standardized benchmarks to comparatively evaluate eye movement prediction algorithms.     

The relationship between personality and affect over the lifespan

This study compared the trait and emotion perspectives of personality development by examining relationships between extraversion, neuroticism, positive and negative affect across the lifespan. A total of 533 volunteers: 228 children and early adolescents (8 to 15 years), 163 late adolescents and young adults (16 to 29 years) and 142 adults (30 to 68 years) completed Eysenck's Personality Questionnaire (EPQ) and the Positive and Negative Affect Schedule (PANAS). Extraversion correlated significantly with positive affect and neuroticism with negative affect in each age group. As predicted by the emotion perspective, correlations were significantly stronger for adults than children and early adolescents. In addition, extraversion-positive affect and neuroticism-negative affect factors explained less variance for children and early adolescents compared to those of adults.     

The Biophilia Hypothesis and Life in the 21st Century: Increasing Mental Health or Increasing Pathology?

Wilson's biophilia hypothesis includes the claim that, as a consequence of evolution, humans have an innate tendency to focus on life and lifelike processes. A review of various literatures converges to support this central claim. One area of support for our innate affiliation with nature comes from research demonstrating increased psychological well-being upon exposure to natural features and environments. Support also comes from the strength and prevalence of phobic responses to stimuli of evolutionary significance and near absence of such responses to potentially dangerous human-made stimuli. That survival emotions of equivalent intensity and prevalence have failed to develop in response to modern life-threatening stimuli can be explained by the extremely rapid process of change and progress that has occurred post World War II and continues at an ever increasingly rapid pace. Given that our modern ways of living, as prescribed by Western industrialised culture, stand in stark contrast to our evolutionary history, it is proposed that we may currently be witnessing the beginnings of significant adverse outcomes for the human psyche.     

Predictors of intimacy in couples' discussions of relationship injuries: an observational study.

The interpersonal process model of intimacy (H. T. Reis & P. Shaver, 1988) proposes that self-disclosure and empathic responding form the basis of intimate interactions. This study examined this model in 102 community couples who completed intimacy measures following videotaped discussions about relationship injuries occurring both within and outside the relationship. Observational assessments of self-disclosure and empathic responding, as well as their respective components, were related to self-reported ratings of post-interaction intimacy. Men's own disclosure and empathic responding predicted their feelings of intimacy, whereas women's intimacy was predicted by their partner's disclosure and empathic responding. Self-disclosure and empathic responding appear to be important behavioral determinants of intimate feelings, but the manner in which they influence intimacy differs according to gender.     

A critical assessment of pedestrian behaviour models

This paper concerns a review and critical assessment of the existing research on pedestrian behaviour in urban areas, focusing on two separate yet complementary aspects: route choice and crossing behaviour. First, an exhaustive review of the existing route choice models for pedestrians is presented. It is shown that the existing models are mainly more stochastic and more macroscopic than required and seldom incorporate the interactions between pedestrians and traffic. Second, the existing models on pedestrians crossing behaviour are presented and assessed. It is shown that, although their approach is usually detailed, deterministic and traffic-oriented, they are mainly devoted to a local level behaviour and focus on only one type of all the potential determinants. Most importantly, these two complementary and possibly interdependent aspects of pedestrian behaviour are always examined separately. The results of this review reveal a lack of an overall and detailed consideration of pedestrian behaviour along an entire trip in urban areas. Moreover, the need for an integrated approach based on flexibility, disaggregation and more determinism is identified. Accordingly, a set of modelling techniques are discussed as a general framework for further research in the field.