Movement Synchrony Influences Intergroup Relations in a Minimal Groups Paradigm

Studies show that synchronizing movements with others encourages a collective social identity, leading to increased cooperation within a group. The current study investigated whether movement synchrony impacts social categorization and cooperation across intergroup boundaries. Two 3-person groups were brought together under movement synchrony conditions designed to emphasize different social categorizations of the aggregate: all individuals moved to the same beat, each minimal group moved to a different beat, or each individual moved to a different beat. Results demonstrate that movement synchrony influenced social categorization and cooperation across intergroup boundaries. Implications for approaches to intergroup relations using movement synchrony are noted.     

Generational Differences in Work Ethic: Fact or Fiction?

Even though stereotypes suggest that older generational cohorts (e.g., Baby Boomers) endorse higher levels of work ethic than younger generations (e.g., Millennials), both the academic literature and popular press have found mixed evidence as to whether or not generational differences actually exist. To examine whether generational differences exist in work ethic, a dataset was compiled (k = 105) of all published studies that provided an average sample age and average work ethic score, with each sample becoming an observation, and being assigned a generational cohort based upon the average age of the sample. Three hierarchical multiple regressions found no effect of generational cohort on work ethic endorsement. In two of the three phases, results found a main effect of sample type, such that industry samples had higher work ethic endorsement than student samples. Implications for applied practitioners and future research streams for generational and work ethic research are discussed.     

Folded Futurity: Epigenetic Plasticity,Temporality, and New Thresholds of Fetal Life

The life sciences are generating a transformative view of the biological body not as fixed and innate but as permeable to its environment and, therefore, plastic: development is open and malleable. Emblematic of these new sciences is environmental epigenetics, which investigates environmental factors that come into the body to shape expression of genes across the life course; prominent are environmental exposures during fetal development, which epigeneticists propose influence not only birth outcomes but also lifelong health. How does this new emphasis on permeability and plasticity during fetal development change how the fetus and fetal vulnerability are understood in the current scientific literature? Perspectives on genomic and reproductive temporality help conceptualize environmental epigenetics as a dynamic relationship between plasticity and determinism. This epigenetic temporality links past, present, and future in way that gives the fetus a keystone role as the vulnerable space-time of environmental epigenetics. Epigenetic temporality produces a new, folded futurity that brings multiple, future generations into the present, influenced by current environmental conditions. In doing this, epigenetics shifts thresholds of fetal vulnerability and intervention to incorporate other entities, including reproductive cells (gametes and primordial germ cells) and very young children. Epigenetic temporality folds in on itself, producing new versions of vulnerable, plastic life that require protection now, in the enduring present, even as the future toward which epigenetics is oriented constantly recedes.     

A Meta-Analysis of Working Memory Impairments in Autism Spectrum Disorders

Autism spectrum disorders (ASD) are characterized by executive dysfunction, and working memory (WM) comprises one core component of executive function. Many studies have investigated WM impairments in individuals with ASD, however, a conclusive agreement has not been reached. The present study provided a meta-analytic review of WM impairments in individuals with ASD and evaluated potential moderating variables of this problem. Twenty-eight studies were included in this study, and the participants comprised 819 individuals with ASD and 875 healthy controls. A significant WM impairment (Cohen’s d?=??0.61) was identified in the individuals with ASD, however, this impairment was not associated with age. Results of moderation analyses showed that (a) spatial WM was more severely impaired than verbal WM and (b) the component of cognitive processing (maintenance vs. maintenance plus manipulation) did not affect the severity of WM impairments. These findings suggest that WM is impaired in individuals with ASD and may have implications for interventions related to WM impairments in these individuals.     

Decoding dyadic interactive nonverbal behaviour in Chinese and Australian cohorts: A novel dyadic puzzle‐solving task

The current study used a novel problem‐solving task in which the solution could only be reached via interactions between members of dyads. The study aimed to systematically examine how nonverbal interactive behaviour was related to the cultural background of the dyads, the participant's role in the dyad (viz., instructor, problem solver) and task repetition. Twenty‐one Australian dyads and 32 Chinese dyads performed the dyadic puzzle‐solving task while their interactions were video‐recorded. In each dyad, one instructor and one problem solver worked together to solve a seven‐piece puzzle. Six trials, each comprising a different puzzle, were completed. Results indicate that the Australian instructors engaged in significantly more eye gazing and displayed more hand gestures but smiled less than the Chinese instructors. The Australian problem solvers maintained longer eye gazing, displayed more hand gestures and more echoing than their Chinese counterparts. Over trials, the Chinese instructors reduced their total talking time, hand gestures, nodding behaviour and smiling during self‐talking more than the Australian instructors. Moreover, the problem solvers in the dyads from both countries significantly reduced their smiling across trials. The current study shows that nonverbal behaviours during dyadic interactions are related to one's cultural background, role in the task and task repetition.     

The role of vowel formant frequencies and duration in the perception of foreign accent

ABSTRACT

This study used synthesis to manipulate vowel formant frequencies and durations to evaluate their role on foreign accent perception. Formant frequencies and durations for the vowels /æ/, /?/, and /a/ were manipulated with changes toward and away from the mean native English and Spanish-accented values from Sidaras, S. K., Alexander, J. E. D., & Nygaard, L. C. (2009. Perceptual learning of systematic variation in Spanish-accented speech. The Journal of the Acoustical Society of America, 125, 3306–3316). Native listeners rated these stimuli on degree of accentedness and comprehensibility. Gradual changes in formant frequencies from native to non-native values impacted /a/ negatively, /?/ positively, and /æ/ minimally. Effects of vowel duration on either type of ratings were small and restricted to vowel-specific interactions. The current findings suggest that vowel formant frequencies are primary cues to foreign accent. Their influence depends upon whether or not frequencies could reflect alternative vowel categories.     

冲突与支持影响情侣依恋的文化差异

采用香港和美国的被试,运用亲密关系经历量表、冲突量表和社会支持量表,考察了冲突和支持对于情侣依恋影响的文化差异。结果发现,当以依恋焦虑为因变量时,冲突、支持和文化 × 冲突 × 支持都是显著的预测变量;当以依恋逃避为因变量时,仅文化和文化 × 支持是显著的预测变量。由此可见,文化影响冲突 × 支持与依恋焦虑的关系：在香港,情侣之间的冲突和支持各自对于依恋焦虑的作用在很大程度上相互抵消;在美国,情侣之间冲突的负面影响比支持的积极影响要强,冲突 × 支持越高,依恋焦虑越高。对于依恋逃避,文化差异仅调节支持与依恋逃避的关系：在香港,支持对依恋逃避的影响要比美国强。整个研究表明,对不同类型的情侣依恋,文化的调节作用不同。     

DISCREPANCY IN FUNCTIONAL ANALYSIS RESULTS ACROSS TWO SETTINGS: IMPLICATIONS FOR INTERVENTION DESIGN

Functional analyses that were conducted in two settings (playground and classroom) indicated that problem behavior was sensitive to adult attention on the playground and tangible items in the classroom. Attention‐ and tangible‐based interventions were designed based on the results from each of the assessment environments and were compared. The attention‐based intervention was more effective on the playground, and the tangible‐based intervention was more effective in the classroom. Findings are discussed in regards to the generality of functional analysis results across environments.     

Are errors differentiable from deceptive responses when feigning memory impairment? An fMRI study

Previous neuroimaging studies have suggested that the neural activity associated with truthful recall, with false memory, and with feigned memory impairment are different from one another. Here, we report a functional magnetic resonance imaging (fMRI) study that addressed an important but yet unanswered question: Is the neural activity associated with intentional faked responses and with errors differentiable? Using a word list learning recognition paradigm, the findings of this mixed event-related fMRI study clearly indicated that the brain activity associated with intentional faked responses was different to the activity associated with errors committed unintentionally. For intentional faked responses, significant activation was found in the ventrolateral prefrontal cortex, the posterior cingulate region, and the precuneus. However, no significant activation was observed for unintentional errors. The results suggest that deception, in terms of feigning memory impairment, is not only more cognitively demanding than making unintentional errors but also utilizes different cognitive processes.     

Lateral foot-movement times in sitting and standing postures

This study examined the effects of foot-side, sex, movement amplitude, and target width on lateral and nonvisually controlled foot-movement time with a reciprocal foot-tapping task in sitting and standing postures. 9 male and 9 female right-foot dominant undergraduates (ages 20 to 25 years) with no reported physical and health problems with their lower limbs voluntarily participated. Analysis indicated foot-movement time in a standing posture was much faster than that in a sitting posture. Target width and movement amplitude had significant effects on foot-movement time, while the effects of foot-side and sex were not significant. Multiple regression models with inclusion of the significant factors were examined which should be useful in predicting foot-movement time required for different tasks in sitting and standing postures. Possible applications of the results may be made to the design of work and foot controls in terms of the related task factors for person-machine interfaces with two or more pedals.