Learning to coordinate redundant degrees of freedom in a dynamic balance task

The present study investigated Bernstein's [The co-ordination and regulation of movements, 1967] proposal regarding the three stages of learning in the changing coordination and control of redundant joint-space degrees of freedom. Six participants practiced maintaining balance on a moving platform that was sinusoidally translated in the anterior-posterior direction for 30 trials on day 1 and 10 trials on day 2. At the beginning of practice, the motion of the torso and limb segments was less coherent in the attempt to compensate for the movement of the support surface in retaining a balanced posture. However, with practice, the organization of a compensatory postural coordination mode became highly coherent and also progressively utilized the passive, inertial forces generated by the movement of the support surface. The findings support the propositions that: (a) the pathway of change over time in the coordination pattern of the torso and joint motions depends on the task goal and constraints to action and (b) the changes in limb and torso motion are in support of the learning of a global body center of mass/platform dynamic.     

Effects of display characteristics and individual differences on preferences of VDT icon design

This study explored the effects of display characteristics such as target/background color combination, single/simultaneous presentation, and individual differences by sex, and design specialty on preferences of VDT icon design. The results indicated black targets (black-on-white, black-on-yellow) and black backgrounds (red-on-black, yellow-on-black) were the most popular and white targets (white-on-red, white-on-black) and white backgrounds (blue-on-white, red-on-white) were the second most popular. As for the chromatic color combinations, yellow-on-blue was the most favored. Subjects rated color combinations under single presentation higher than those under simultaneous presentation. Women rated purplish targets and rated purplish and blue backgrounds higher than men. Subjects with design background favored black more either as a target or background, but they favored turquoise less than those without design background.     

Contagious or prosocial? Perceptions of mask-wearers toward Whites and Asians: A cross-cultural comparison during the early stage of the COVID-19 pandemic

The COVID-19 pandemic has led to a worldwide increase in the use of face masks to prevent viral transmission. However, as mask-wearing was a new behavior in many countries, there was a limited understanding of how mask-wearers are perceived and how such perceptions impact one's own mask-wearing behavior. Mask-wearers may be seen as contagious or prosocial, and these perceptions may vary based on the race of the mask-wearer and the country of the observer, particularly given the rise in pandemic-related anti-Asian rhetoric in the U.S. In three experiments (N = 579), we investigated these questions, conducting two studies in the United States (May and July 2020), where mask-wearing was new and anti-Asian rhetoric has been prevalent, and one study in South Korea (November 2020), where mask-wearing was relatively common. Results indicate that masked individuals are perceived as less contagious and more prosocial, regardless of target race or participant nation. These perceptions were more pronounced among American political liberals, Americans who are more sensitive to infection transmission (Study 2), and Koreans who self-perceived a greater vulnerability to infection (Study 3). Especially in the U.S., perceiving the masked target as more prosocial predicted more self-reported mask-wearing, while perceiving the masked target as more contagious and less prosocial predicted less mask-wearing (Study 2). These findings provide insights into social perceptions of masks and race during the pandemic.     

What (not) to add in your ad: When job ads discourage older or younger job seekers to apply

Both older and younger job seekers face difficulties when entering the workforce. Qualification-based targeted recruitment (QBTR) might be used to attract older/younger job seekers, yet how this strategy is perceived by older/younger job seekers has not been considered before. The present study fills this gap and investigated effects of negatively metastereotyped information in job ads (i.e., personality requirements or traits) on application intention and self-efficacy of both older and younger job seekers. An experimental study (N_total = 556; 44.6% aged 50 or older, 55.4% aged 30 or younger) showed that negatively metastereotyped traits in job ads (e.g., “flexible”) lowered older job seekers’ application intention and that this effect was mediated by older job seekers’ self-efficacy regarding that trait. No such effects were found among younger job seekers. Results showed that organizations can fail to attract older candidates because of the traits mentioned in job ads, which is particularly alarming when aiming to target age-diverse applicants. Suggestions for practitioners and future research are formulated.     

Voluntarily-generated unimanual preparation is associated with stopping success: evidence from LRP and lateralized mu ERD before the stop signal

According to the race models of the stop-signal paradigm, stopping success (successful vs. unsuccessful stopping) is attributed to the finishing times of a go and a stop process. In addition to those factors involving processing times, in the present study we sought to use electrophysiological measures to find factors involving activations that could affect stopping success. We hypothesized that voluntarily-generated unimanual preparation would be a factor. To assess voluntarily-generated unimanual preparation in the stop-signal paradigm, we used a selective-stopping task without any precue. The selective-stopping task also allowed us to assess reaction times (RTs) even when stopping was successful. We demonstrated shorter RTs in signal-respond (i.e. unsuccessful stopping) than in signal-inhibit (successful stopping) trials, as is predicted by the race models. More importantly, we also demonstrated different pre-signal lateralized readiness potentials between the two types of trials and larger lateralized mu ERD in signal-respond than in signal-inhibit trials, suggesting that voluntarily-generated unimanual preparation affects stopping success. In addition to what is described in the race models of the stop-signal paradigm, the present results therefore demonstrated measures of pre-signal activations that could influence stopping success.     

Typologies of Helicopter Parenting in American and Chinese Young-Adults’ Game and Social Media Addictive Behaviors

Journal of Child and Family Studies - Helicopter parenting has emerged as a prevalent phenomenon in families with adult children. Due to its developmentally inappropriate nature, helicopter...     

Language and the Symptoms of Mental Illness Connection via Abstract Representations of the Self and the World

Abstract

The aim of the present study is to provide additional knowledge about the mediatory processes through which language contributes to the symptoms of mental illness. Although recent studies have provided insight about the relationship between language and the indicators of mental illness, the role of intervening variables in this connection has been ignored. The present investigation tested a structural equation model in which the need for the absolute truth about self and worry mediated the relationship of the gap between inner psychological experience and language with anxiety and depression. The results have provided support for the model and showed that the gap predicts both the need for absolute truth and worry which, in turn, predict the levels of anxiety and depression. The results have been discussed in the light of previous research, and implications for future research have also been considered.     

The Prevalence of and Psychosocial Risks for Suicide Attempts in Male and Female College Students in Taiwan

The prevalence of and psychosocial risks for suicide attempts was investigated in college students in Taiwan by gender, after controlling for depressive symptoms. Self‐reported data were collected from a nationally representative sample of 2,835 college students; 11.90% of females and 8.87% of males reported they had attempted suicide in the preceding 12 months. After controlling for depression, suicidal ideations were associated with suicide attempts in females, whereas there were fewer positive expectations toward the future associated with suicide attempts in males. Several explanations for the high prevalence of suicide attempts among college students in Taiwan were discussed. In the future, further verification of the findings is necessary.     

Birth rank as a determinant of academic achievement:results from a European survey of primary school children

ABSTRACT

The present study investigates the relationship between birth rank and academic achievement of children in a cross-country study to examine whether firstborn children perform better in primary school than later-born children when controlling for individual, social and parental characteristics. Data were drawn from the School Children Mental Health in Europe (SCMHE) study, which included samples from Bulgaria, Germany, Italy, Netherlands, Lithuania, Romania and Turkey (n = 7,518). Children’s academic performance in reading and mathematics was evaluated by teachers and parents reported sociodemographic variables including birth rank and parental attitudes. Controlling for individual, sociodemographic variables and parental attitudes in multinomial regressions, first- or second-born children displayed greater performance in mathematics and in reading as compared to children whose birth rank was third or above. Children from large families, especially when they are not first- or second-born appear to be at greater risk for academic difficulties and should benefit from targeted prevention efforts.