Grouping inhibits motion fading by giving rise to virtual trackable features

After prolonged viewing of a slowly drifting or rotating pattern under strict fixation, the pattern appears to slow down and then momentarily stop. The authors show that grouping can slow down the process of "motion fading," suggesting that cortical configural form analysis interacts with the computation of motion signals during motion fading. The authors determined that grouping slows motion fading because it can give rise to trackable features, such as virtual contour terminators not present in the image, that possess stronger motion signals than would occur in the absence of such trackable features. That a continuously rotating stimulus will eventually be perceived to stop, despite the presence of such trackable features, suggests that the motion-from-form system itself can be fatigued. The finding that stationary form can remain visible even after the motion signal has faded suggests that the neural bases of motion visibility and form visibility arise from different neuronal populations.     

Burnout and workplace deviance among flight attendants in Taiwan

The relationship between burnout and workplace deviance, identified as a component of job performance, was examined. Burnout was assessed with the Maslach Burnout Inventory which has three dimensions, Emotional Exhaustion, Depersonalization, and Reduced Personal Accomplishment. Workplace deviance was defined as voluntary behavior that violates significant organizational norms and threatens the well-being of an organization, its members, or both. This was assessed with the Workplace Deviance Scale, measuring the extent to which the participants had engaged in workplace deviant behavior such as taking property from work without permission, making fun of someone at work, or cursing at someone at work. Anonymous questionnaires with stamped envelopes were distributed to a sample of 1,470 Taiwanese flight attendants at the Arrival Hall of Taiwan Taoyuan International Airport. A response rate of 22.45% was obtained. After cases with missing data (n = 27) had been eliminated, the sample totaled 303, 17 men and 286 women. The average age was 28.7 yr. (SD = 4.6). Results of hierarchical regression showed that Depersonalization scores were significantly predictive of Workplace Deviance scores but not Emotional Exhaustion and Reduced Personal Accomplishment scores. Possible reasons and implications of these findings were discussed.     

BOLD activation varies parametrically with corner angle throughout human retinotopic cortex

The Alternating Brightness Star (ABS) is an illusion that provides insight into the relationship between brightness perception and corner angle. Recent psychophysical studies of this illusion have shown that corner salience varies parametrically with corner angle, with sharp angles leading to strong illusory percepts and shallow angles leading to weak percepts. It is hypothesized that the illusory effects arise because of an interaction between surface corners and the shape of visual receptive fields: sharp surface corners may create hotspots of high local contrast due to processing by center-surround and other early receptive fields. If this hypothesis is correct, early visual neurons should respond powerfully to sharp corners and curved portions of surface edges. Indeed, the primary role of early visual neurons may be to localize the discontinuities along the edges of surfaces. If so, all early visual areas should show greater BOLD responses to sharp corners than to shallow corners. On the other hand, if corner processing is exclusively constrained to certain areas of the brain, only those specific areas will show greater responses to sharp vs shallow corners. To address this we explored the BOLD correlates of the ABS illusion in the human visual cortex using fMRI. We found that BOLD signal varies parametrically with corner angle throughout the visual cortex, offering the first neurophysiological correlates of the ABS illusion. This finding provides a neurophysiological basis for the previously reported psychophysical data that showed that corner salience varied parametrically with corner angle. We propose that all early visual areas localize discontinuities along the edges of surfaces, and that specific cortical corner-processing circuits further establish the specific nature of those discontinuities, such as their orientation.     

Functional heterogeneity of inferior frontal gyrus is shaped by linguistic experience

A crosslinguistic, positron emission tomography (PET) study was conducted to determine the influence of linguistic experience on the perception of segmental (consonants and vowels) and suprasegmental (tones) information. Chinese and English subjects (10 per group) were presented binaurally with lists consisting of five Chinese monosyllabic morphemes (speech) or low-pass-filtered versions of the same stimuli (nonspeech). The first and last items were targeted for comparison; the time interval between target tones was filled with irrelevant distractor tones. A speeded-response, selective attention paradigm required subjects to make discrimination judgments of the target items while ignoring intervening distractor tones. PET scans were acquired for five tasks presented twice: one passive listening to pitch (nonspeech) and four active (speech = consonant, vowel, and tone; nonspeech = pitch). Significant regional changes in blood flow were identified from comparisons of group-averaged images of active tasks relative to passive listening. Chinese subjects show increased activity in left premotor cortex, pars opercularis, and pars triangularis across the four tasks. English subjects, on the other hand, show increased activity in left inferior frontal gyrus regions only in the vowel task and in right inferior frontal gyrus regions in the pitch task. Findings suggest that functional circuits engaged in speech perception depend on linguistic experience. All linguistic information signaled by prosodic cues engages left-hemisphere mechanisms. Storage and executive processes of working memory that are implicated in phonological processing are mediated in discrete regions of the left frontal lobe.     

Understanding Familial/Cultural Factors in Adolescent Depression: A Culturally-Competent Treatment for Working With Chinese American Families

A significant challenge for researchers and clinicians is in the process of determining culturally sensitive strategies to ensure treatment effectiveness with ethnic populations in the United States. This article highlights key aspects of treating Chinese American families where a child is struggling with adolescent depression. Relevant literatures associated with adolescent depression and effective treatment of Chinese Americans are reviewed and organized according to the dimensions of therapist knowledge, awareness, and skills. Therapist guidelines are provided using key aspects of cognitive behavioral therapy. Additional suggestions are presented for culturally competent therapy with Chinese American youth and their families.     

The influence of implicit theories and message frame on the persuasiveness of disease prevention and detection advocacies

This research investigates the effectiveness of health message framing (gain/loss) depending on the nature of advocacy (prevention/detection) and respondents’ implicit theories (entity/incremental). Three experiments demonstrate that for detection advocacies, incremental theorists are more persuaded by loss frames. For prevention advocacies, incremental theorists are more persuaded by gain frames. For both advocacies (detection and prevention), entity theorists are not differentially influenced by frame. However, entity theorists are message advocacy sensitive such that they are more persuaded by prevention than detection advocacies, regardless of the message frame. These results are robust for measured as well as manipulated implicit theories and for different health contexts.     

Measuring Quality of Life: A Case for Re-Examining the Assessment of Domain Importance Weighting

Domain importance weighting has long been a topic of debate in the study of quality of life (QoL). The purpose of this study is to examine the adequacy of popular approaches used to assess domain importance weighting with QoL measures that follow a formative-indicator approach. Using both empirical and simulation data, this study found that neither of the two popular methods of evaluating the performance of domain importance weighting in QoL measures, correlation and moderated regression analysis, was ideal in capturing the actual function domain importance weighting posited in the data. More specifically, results from the popular approaches used to assess domain importance weighting could be quite misleading when QoL measures were constructed using a formative-indicator approach. These findings call for a careful re-examination of results from previous studies using those popular approaches to assess domain importance weighting in QoL measures.     

Employees' reactions to psychological contract breach: A moderated mediation analysis

This study examined the mediating role of acquiescent silence in the relationship between psychological contract breach and employee job satisfaction, as well as the moderating roles of perceived ethical climate on that relationship and on the mediation effect of acquiescent silence. Survey data were collected from a sample of 273 full-time employees from nine high-tech firms in Taiwan. The results showed that acquiescent silence partially mediated the relationship between psychological contract breach and job satisfaction. Moreover, the results from the moderation analysis showed that perceived ethical climate moderated the influence of psychological contract breach on acquiescent silence and the results from the moderated mediation analysis revealed that this mediation of acquiescent silence was moderated by perceived ethical climate such that at the lower level of perceived ethical climate, the mediation effect of acquiescent silence became stronger. Implications for managerial practices and suggestions for future research were discussed.     

Importance Weighting in the Domain-of-Life Approach to Subjective Well-Being: the Consideration of Age

The domain-of-life approach to subjective well-being (SWB) has been popular for decades. Recognizing the possibility that individuals may not perceive all life domains equally important, many researchers advocate for importance weighting, which is to incorporate the relative importance of life domains (i.e., domain importance) into the scoring of SWB at the individual level. However, the need for and the adequacy of importance weighting remain topics of debate. What has been missing in the debate is the consideration of influences of potential confounding factors. Given that age is significantly associated with domain satisfaction, domain importance, and SWB, assessing importance weighting should not ignore the potential confounding effect of age. Analyzing data from an online survey, we found that adjusting for the confounding effect of age produced negligible changes in the results of assessing the role that domain importance played in the relationship between domain satisfaction and SWB. Our findings support the observations from the literature that the results of assessing importance weighting depended on the SWB variable selected. However, given our non-probability study sample, future studies should continue to consider age as a confounder in assessing importance weighting in the domain-of-life approach to SWB.

     

The Connection Between Happiness and Service Businesses: A Preliminary Study

Happiness may be one of the most important goals that many people pursue in the world. This study adopts a qualitative approach to investigate the determinants of happiness for Taiwanese/Chinese people. Further, we investigate related service opportunities for happiness via a field survey of 808 respondents. This study identifies four happiness segments for people in Taiwan/China: Influential & Outgoing, Adequately Settled, Pleasure Seeking, and Young & Restless. These four happiness segments differ markedly in terms of characteristics and potential service opportunities. The findings of this study have implications for researchers who are seeking to understand happiness in an Asian country.