Cerebral blood flow in 5‐ to 8‐month‐olds: Regional tissue maturity is associated with infant affect

Infancy is marked by rapid neural and emotional development. The relation between brain function and emotion in infancy, however, is not well understood. Methods for measuring brain function predominantly rely on the BOLD signal; however, interpretation of the BOLD signal in infancy is challenging because the neuronal‐hemodynamic relation is immature. Regional cerebral blood flow (rCBF) provides a context for the infant BOLD signal and can yield insight into the developmental maturity of brain regions that may support affective behaviors. This study aims to elucidate the relations among rCBF, age, and emotion in infancy. One hundred and seven mothers reported their infants' (infant age M ± SD = 6.14 ± 0.51 months) temperament. A subsample of infants completed MRI scans, 38 of whom produced usable perfusion MRI during natural sleep to quantify rCBF. Mother‐infant dyads completed the repeated Still‐Face Paradigm, from which infant affect reactivity and recovery to stress were quantified. We tested associations of infant age at scan, temperament factor scores, and observed affect reactivity and recovery with voxel‐wise rCBF. Infant age was positively associated with CBF in nearly all voxels, with peaks located in sensory cortices and the ventral prefrontal cortex, supporting the formulation that rCBF is an indicator of tissue maturity. Temperamental Negative Affect and recovery of positive affect following a stressor were positively associated with rCBF in several cortical and subcortical limbic regions, including the orbitofrontal cortex and inferior frontal gyrus. This finding yields insight into the nature of affective neurodevelopment during infancy. Specifically, infants with relatively increased prefrontal cortex maturity may evidence a disposition toward greater negative affect and negative reactivity in their daily lives yet show better recovery of positive affect following a social stressor.     

Data Collection in a Flat World: The Strengths and Weaknesses of Mechanical Turk Samples

Mechanical Turk (MTurk), an online labor system run by Amazon.com, provides quick, easy, and inexpensive access to online research participants. As use of MTurk has grown, so have questions from behavioral researchers about its participants, reliability, and low compensation. In this article, we review recent research about MTurk and compare MTurk participants with community and student samples on a set of personality dimensions and classic decision‐making biases. Across two studies, we find many similarities between MTurk participants and traditional samples, but we also find important differences. For instance, MTurk participants are less likely to pay attention to experimental materials, reducing statistical power. They are more likely to use the Internet to find answers, even with no incentive for correct responses. MTurk participants have attitudes about money that are different from a community sample's attitudes but similar to students' attitudes. Finally, MTurk participants are less extraverted and have lower self‐esteem than other participants, presenting challenges for some research domains. Despite these differences, MTurk participants produce reliable results consistent with standard decision‐making biases: they are present biased, risk‐averse for gains, risk‐seeking for losses, show delay/expedite asymmetries, and show the certainty effect—with almost no significant differences in effect sizes from other samples. We conclude that MTurk offers a highly valuable opportunity for data collection and recommend that researchers using MTurk (1) include screening questions that gauge attention and language comprehension; (2) avoid questions with factual answers; and (3) consider how individual differences in financial and social domains may influence results. Copyright © 2012 John Wiley & Sons, Ltd.     

CAPTIVE GAZELLES IN IRAQI JEWRY IN MODERN TIMES IN RELATION TO CULTURAL PRACTICES AND VERNACULAR HOUSING

As late as in the first half of the twentieth century, there were some Jews in Iraq who kept gazelles for meat, even in urban homes. This was made possible by the features of vernacular housing this article explains. Far more prominent, however, was the use made in Iraq of gazelle hides in the manufacturing of Torah scrolls, which were ubiquitous in Iraq, and many were exported from there at various times. The prevailing custom of dedicating Torah scrolls (typically, in memory of one's deceased relatives) made it necessary for gazelles to be raised in captivity as hunting alone would not have been sustainable for generating a supply that would meet the demand.     

Amélioration de la qualité de vie au travail dans les unités de soins : la démarche ORSOSA

Improve the quality of working conditions is a major issue for healthcare workers who have to deal with productivity obligations and multiple procedures. Based on the magnet hospital concept, the ORSOSA study (prospective cohort study of 4000 helthcare workers) helped develop and validate a methodolody that allows to quickly diagnose the levels of psychological and organizational constraints (CPO) from the staff’s point of view / of the staff. The ORSOSA method relies on an organisational psychologist who launches a dynamic during the diagnostic feedback phase. He gets the team to appropriate the strengths and weaknesses and to rank their recommendations. This article presents an overview of the method and it the first stages of its evaluations.     

Intelligence Level and the Allocation of Resources for Creative Tasks: A Pupillometry Study

This pupillometry study examined the relationship between intelligence and creative cognition from the resource allocation perspective. It was hypothesized that, during a creative metaphor task, individuals with higher intelligence scores would have different resource allocation patterns than individuals with lower intelligence scores. The study also examined the influence of intelligence in language and visuo-spatial domains on the resource allocation mechanism of verbal and visual creativity. The results suggested that individuals with higher intelligence scores allocated more cognitive resources for creative tasks than those with lower intelligence scores but not for non-creative tasks. The findings of this study support the view that creativity requires allocation of several cognitive faculties and may share underlying cognitive and neural mechanisms with intelligence. Domain-specific intelligence did not seem to play a significant role in the same domain, as individuals with higher scores in both domains showed similar resource allocation patterns. However, individuals with higher intelligence scores in the visuo-spatial domain generated more creative metaphorical interpretations in both verbal and visual creative metaphor tasks suggesting its importance in creative cognition.     

Schedule control, supervisor support and work engagement: A winning combination for workers in hourly jobs?

The changing natures of both work and the lives of the U.S. workforce have created an array of challenges for organizations attempting to foster work engagement. To accommodate the work and family needs of an increasingly diverse workforce, many firms are offering flexible work solutions to employees. However, the distribution of these types of organizational resources is unequal, with workers in lower-wage hourly jobs having the least access to any form of flexibility. The purpose of this paper is to examine the relationship of schedule control, as a form of flexible work practice, and work engagement among workers employed in hourly retail jobs. Authors tested a model whereby the relationship between schedule control and work engagement is mediated by schedule satisfaction and perceived supervisor support. A sample of 1343 full-time hourly retail workers was used to address the study's purpose. Hypothesized relationships were fully or partially supported. Implications for research and practice are discussed.     

Religio-cultural variation in childbearing practices

A sample of 300 mothers aged 20-35 years from Bihar city in Bhagalpur, India, was drawn to reflect similar ages, education, family income, number of children, and residence for each religious group: Hindu, Muslim, and Christian. The hypothesis was that childbearing mothers would differ significantly in their child rearing methods and attitudes toward their children. The Child Care Schedule asked questions about methods of feeding, weaning, toilet training, and bed habit training. The Parent Attitude Schedule measures mother's attitudes: restrictive-permissive, loving-rejecting, and protecting-neglecting. The results indicated that 78% of Christian mothers breast fed compared to 75% of Muslim mothers and 58% of Hindu mothers. There were significant differences between groups in feeding practices (x2= 11.18, df=2, p.01). 77.3% of Christian mothers practiced a 3-hour feeding schedule, compared to 52% of Muslim mothers and 50% of Hindu mothers; 49.5% of Hindu mothers preferred a 4-hour feeding schedule. These differences were also significant. 54% of HIndu mothers wean before 12 months, and only 33% of Muslim and 35% of Christian mothers did. A greater proportion of Muslim mothers (58%) wean between 13 and 24 months. Differences again were significant. 66% or more of the mothers in each group practiced gradual weaning rather than forced or casual weaning. There were significant differences in toilet training habits and training in washing and bathing among the 3 groups of women. All 3 groups believed in moderate training in bathing. There were insignificant differences in bed habit training and the age at which training began. About 75% of all mothers followed moderate approaches to bed habit training. There were significant differences in child rearing attitudes between Hindus and Muslims. Hindu mothers were the least restrictive, and Christian mothers were the most restrictive. The same pattern applied to loving-rejecting and protecting-neglecting. Christian mothers were the most loving, and Muslim mothers were the least loving. Christian mothers were the most protective and Muslim mothers the least protective. In Hindu families with early weaning and toilet training, the joint family system helps to dissipate frustration caused by early practices. Further research on cultural differences in personality and cultural variations in child rearing is needed.     

TRIANGLE EFFECT AND THE CONNOTATIVE MEANING OF TRUST IN PRISONER'S DILEMMA: A CROSS CULTURAL STUDY

Two hundred and forty-nine male postgraduate students of management played the Prisoner's Dilemma Game (Deutsch 1960) and filled out a postgame questionnaire measuring attitude toward the ‘other player’. Striking differences resulted between trusting and trustworthy subjects on the one hand and suspicious and untrustworthy subjects on the other with respect to different meanings given to the dimension of trust (cooperation) in the interaction. As predicted, trusting behavior of the other player was given a positive evaluative meaning - good versus bad - by the trusting and trustworthy subjects and negative dynamism meaning - weak versus strong - by the suspicious and untrustworthy subjects. The trusting players expected the typical other to make either trusting or suspicious moves, whereas the suspicious subjects expected the typical other to be uniformly suspicious, yielding a high Triangularity Index (Kelley and Stahelski 1970). Most provocatively, while 51% of trusting subjects thought that the other player was a female, 81% from among the suspicious subjects thought so. Some implications of the results in interpersonal and organizational situations are discussed.