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.     

Social contexts modulate neural responses in the processing of others’ pain: An event-related potential study

Two hypotheses have been proposed regarding the response that is triggered by observing others’ pain: the “empathizing hypothesis” and the “threat value of pain hypothesis.” The former suggests that observing others’ pain triggers an empathic response. The latter suggests that it activates the threat-detection system. In the present study, participants were instructed to observe pictures that showed an anonymous hand or foot in a painful or non-painful situation in a threatening or friendly social context. Event-related potentials were recorded when the participants passively observed these pictures in different contexts. We observed an interaction between context and picture in the early automatic N1 component, in which the painful pictures elicited a larger amplitude than the non-painful pictures only in the threatening context and not in the friendly context. We also observed an interaction between context and picture in the late P3 component, in which the painful pictures elicited a larger amplitude than the non-painful pictures only in the friendly context and not in the threatening context. These results indicate that specific social contexts can modulate the neural responses to observing others’ pain. The “empathic hypothesis” and “threat value of pain hypothesis” are not mutually exclusive and do not contradict each other but rather work in different temporal stages.     

Using support vector machines to identify literacy skills: Evidence from eye movements

Is inferring readers’ literacy skills possible by analyzing their eye movements during text reading? This study used Support Vector Machines (SVM) to analyze eye movement data from 61 undergraduate students who read a multiple-paragraph, multiple-topic expository text. Forward fixation time, first-pass rereading time, second-pass fixation time, and regression path reading time on different regions of the text were provided as features. The SVM classification algorithm assisted in distinguishing high-literacy-skilled readers from low-literacy-skilled readers with 80.3 % accuracy. Results demonstrate the effectiveness of combining eye tracking and machine learning techniques to detect readers with low literacy skills, and suggest that such approaches can be potentially used in predicting other cognitive abilities.     

Levels of phonological awareness in three cultures

This study focused on syllable phoneme onset levels of phonological awareness in relation to reading of Chinese and English in kindergarten and first-grade children from Xian (China), Hong Kong, and Toronto, cultures that differ substantially in approaches to reading instruction. English syllable awareness among native Chinese speakers was as good as or better than that among English speakers, indicating that the Chinese language may promote syllable-level awareness in children. Hong Kong children recognized significantly more words in both English and Chinese but were significantly poorer than the Xian children in both syllable and phoneme onset deletion tasks, suggesting that Pinyin training (given in Xian only) may promote phonological awareness even at the syllable level. In both Xian and Hong Kong, measures of syllable awareness consistently predicted Chinese character recognition better than did phoneme onset awareness. In contrast, English word recognition was predicted differently by syllable and phoneme onset awareness across cultures. These results underscore the roles of both language and writing system in understanding levels of phonological awareness.     

Competence in early adult romantic relationships: a developmental perspective on family influences

The present prospective, longitudinal study of 193 young adults (85 men, 108 women, M = 20.7 years old) and their partners in ongoing romantic relationships in 1997 was initiated in 1989, when the 193 target youths were in the 7th grade. On the basis of the model for the development of early adult romantic relationships (DEARR; C. Bryant & R. D. Conger, in press), the authors hypothesized that interactional processes in the family of origin would predict interpersonal skills by the target youths, which would be positively related to the early adult couple's relationship quality. Observational ratings showed that nurturant-involved parenting in the family of origin predicted behaviors by the target youth to a romantic partner that were warm, supportive, and low in hostility. These competent behaviors of the target youth were positively associated with relationship quality for the early adult couple and also mediated or explained the connection between parenting and relationship quality.     

上司人际公平如何影响员工工作结果:有中介的调节效应

本文探讨了上司的人际公平怎样影响员工工作满意度和人际层面组织公民行为,以及这种影响何时更强或更弱。通过对237名在职人员调查,结果发现:(1)员工的上司信任在人际公平与工作满意度、人际层面组织公民行为之间具有部分和完全中介作用;(2)上司权力对人际公平效应具有调节作用:当上司权力较高时,人际公平显著影响员工对他的信任,进而影响工作满意度和人际层面组织公民行为;而当其权力较低时,人际公平的影响不明显。     

Male vocal competition is dynamic and strongly affected by social contexts in music frogs

Male–male vocal competition in anuran species is critical for mating success; however, it is also highly time-consuming, energetically demanding and likely to increase predation risks. Thus, we hypothesized that changes in the social context would cause male vocal competition to change in real time in order to minimize the costs and maximize the benefits of competition. To test this hypothesis, we assessed the effect of repeating playbacks of either white noise (WN) or male advertisement calls on male call production in the Emei music frog (Babina daunchina), a species in which males build mud-retuse burrows and call from within these nests. Previous studies have shown that calls produced from inside burrows are highly sexually attractive (HSA) to females while those produced outside nests are of low sexual attractiveness (LSA). Results showed that most subjects called responsively after the end of WN playbacks but before the onset of conspecific call stimuli although call numbers were similar, indicating that while males adjusted competitive patterns according to the biological significance of signals, their competitive motivation did not change. Furthermore, these data indicate that the frogs had evolved the ability of interval timing. Moreover, when the inter-stimulus interval (ISI) between playbacks was varied, the subjects preferentially competed with HSA calls when the ISI was short (<4 s) but responded equally to HSA and LSA calls if the ISI was long (≥4 s), suggesting that males allocate competitive efforts depending on both the perceived sexual attractiveness of rivals and the time available for calling. Notably, approximately two-thirds of male calls occurred in response to HSA calls, a preference rate comparable to that previously found for females in phonotaxis experiments and consistent with the idea that the mechanisms underlying both the male’s competitive responses to rivals and the female’s preferences toward potential mates coevolved under the same selective pressure.     

Dynamics of the relationships among work and family resource gain and loss,enrichment, and conflict over time

Dynamics of the relationships among work and family resource gain and loss, work-to-family enrichment (WFE), and work-to-family conflict (WFC) over time were examined using the data collected from 382 employees of Chinese firms at two points of time one year apart. Work resource gain at time 1 weakened the positive relationship between WFC at times 1 and 2, and work resource loss at time 1 weakened the positive relationship between WFE at times 1 and 2. However, WFC at time 1 strengthened the positive relationship between work resource gain at time 1 and family resource gain at time 2. Overall, these results suggest the existence of complementary forces that maintain the status quo of individuals' work–family experiences, such that high losses diminish the transfer of gains and high gains diminish the transfer of losses, but also that unexpected gains may result from individuals having to deal with painful situations. Implications of these dynamics for theory, research, and practice are discussed.     

Event‐related potentials reveal linguistic suppression effect but not enhancement effect on categorical perception of color

The present study used the event‐related potential technique to investigate the nature of linguistic effect on color perception. Four types of stimuli based on hue differences between a target color and a preceding color were used: zero hue step within‐category color (0‐WC); one hue step within‐category color (1‐WC); one hue step between‐category color (1‐BC); and two hue step between‐category color (2‐BC). The ERP results showed no significant effect of stimulus type in the 100‐200 ms time window. However, in the 200–350 ms time window, ERP responses to 1‐WC target color overlapped with that to 0‐WC target color for right visual field (RVF) but not left visual field (LVF) presentation. For the 1‐BC condition, ERP amplitudes were comparable in the two visual fields, both being significantly different from the 0‐WC condition. The 2‐BC condition showed the same pattern as the 1‐BC condition. These results suggest that the categorical perception of color in RVF is due to linguistic suppression on within‐category color discrimination but not between‐category color enhancement, and that the effect is independent of early perceptual processes.