Bilingual Language Mixing: Why Do Bilinguals Code-Switch?

Bilingual speakers often code-switch from one language to another, especially when both languages are used in the environment. This article explores the potential theoretical explanations for this language behavior, the costs and benefits associated with language switching, and the role of language dominance in the direction of the switch. In short, code switching follows functional and grammatical principles and is a complex, rule-governed phenomenon. Although significant progress has been made in understanding the psycholinguistics of code switching, research is needed to examine the cognitive mechanisms underlying the bilingual's ability to integrate and separate two languages during the communicative process.     

Plato's Theory of Aging

Plato's writings express a positive attitude toward elderly people. But do his writings also show a serious theoretical interest in issues of aging? We approach this question by comparing what Plato says about aging to major theoretical issues in gerontology. We argue that many of Plato's subtler observations of the behavior of elderly people and many of his ideas about aging anticipate specific research and theoretical advances in contemporary gerontology. We compare passages in Plato's works to the debate between activity and disengagement theories, the concepts of continuity and gerotranscendence, Robert Butler's discovery of “the life review,” and recent theories of old age wisdom. Plato's anticipation of these ideas and issues related to them suggests that his writings may contain still other major insights into aging which are not yet articulated in gerontology. We suggest three possibilities.     

Countries with fewer males have more violent crime: marriage markets and mating aggression

Violent crimes (murders, rapes, and assaults) are substantially higher in countries with a relative scarcity of men according to research using INTERPOL data [Barber, 2000a]. This is a paradox given that males are more criminally violent and likely reflects increased direct mating competition. The present research sought to confirm and extend Barber's [2000a] finding, using murder data from the United Nations and homicides from World Health Organization that are of higher quality than the INTERPOL data, and using more rigorous controls. In addition to level of economic development, control variables included, income inequality, urbanization, population density, the number of police, and whether the country was a major center of illegal drug trafficking. Regression analyses with all controls found that killings in both data sets increased with declines in the male proportion of the population. The findings are discussed in terms of direct reproductive competition and alternative explanations are considered.     

From steroids to nation states: An integrated evolutionary approach to violent crime

Most evolutionary psychologists emphasize the individual level of analysis concerning violent crime and other dependent variables. This paper outlines a strategy for evolutionary explanation of societal variation across time as well as space and applies it to crimes of violence. The central idea is that individual adaptations for reproductive competition play out differently depending both on developmental context and societal conditions, including the marriage market. Violent crimes (murders, rapes, and assaults) are substantially higher in countries with a relative scarcity of men according to research using INTERPOL and World Health Organization data [Barber, N. (2000a). The sex ratio as a predictor of cross-national variation in violent crime. Cross-Cultural Research, 34, 264–282, Barber, N. (2009). Countries with fewer males have more violent crime: Marriage markets and mating aggression. Aggressive Behavior, 35, 49–56]. This is an apparent contradiction given that males are more criminally violent and likely reflects increased direct mating competition that evokes increased testosterone production for humans as for other species. The empirical evidence is discussed in terms of direct reproductive competition and various alternative explanations, particularly the “culture of violence” and socialization experiences are considered.     

The Influence of Abnormal Sex Differences in Life Expectancy on National Happiness

Countries with better health, as indexed by life expectancy, score higher on subjective well-being (SWB). It was predicted that deviations from the average sex difference in life expectancy (reflecting reproductive competition among males and discrimination against females) would be inversely related to happiness. Regression analysis of SWB for 178 countries found that deviations from the average sex difference in life expectancy were predictive of unhappiness controlling for life expectancy, national wealth, and income inequality. Countries with a relative scarcity of female children (used as an index of parental bias) were less happy. Societies in which there is an undue burden on the health and survival of either sex are thus unhappy ones due to gender-specific disadvantage and associated gender conflict.     

Visible Speech as a Function of Image Quality: Effects of Display Parameters on Lipreading Ability

Two experiments are reported that examine effects of certain visual display parameters on subjects' ability to lipread numbers. The quality of the image of the speaker's face is altered by varying temporal resolution (frame rate), spatial resolution (number of pixels) and contrast resolution (number of grey scale levels). In Experiment 1, combinations of these variables are examined in a repeated measures design and reliable effects of reducing both frame rate and number of grey levels are evident. In Experiment 2, the frame rate and grey scale settings are factorially combined on a between-subjects basis, and practice is given so that subjects can adapt to the display conditions to which they are exposed. Effects of frame rate and grey scale are again statistically significant, and additive. Lipreading performance improves over the short duration of the experiment, but both image variables continue to affect performance. The effect size of the grey scale factor decreases with practice, but not that of frame rate. The results are discussed with regard to the kinds of relevant visual cues that may be affected by image degradation. Implications for the planned development of low cost digital communication are also considered. Trading off one image variable at the expense of another may be necessary to meet bandwidth limitations, and data such as those presented will be necessary to decide on a combination of parameter values to satisfy human performance and technical criteria.     

Late Adoptions: Attachment Security and Emotional Availability in Mother–Child and Father–Child Dyads

A growing body of research suggests that a history of neglect, abuse and institutionalization can negatively affect late-adopted children’s attachment representations, and that adoptive parents can play a key role in enabling adopted children to earn secure attachments. Still, only a few studies have explored the quality of caregiver–child interaction in adoptive families. The present study aimed at verifying both the concordance of attachment in adoptive dyads (mother–children and father–children) and the relationship between attachment representations and parent–child interaction. The research involved 20 adoptive families in which the child’s arrival had occurred between 12 to 36 months before the assessment, and where children were aged between 4.5 and 8.5 years. Attachment was assessed through the Adult Attachment Interview for parents and through the Manchester Child Attachment Story Task for children. The emotional quality of parent–child interaction was assessed trough the Emotional Availability Scales. Our results pointed out the presence of a relation between attachment representations of late-adopted children and their adoptive mothers (75%, K?=?0.50, p?=?.025). In addition, we found that both insecure children and mothers showed lower levels of EA than secure ones. Some explanations are presented about why, in the early post-adoption period, child attachment patterns and dyadic emotional availability seem to be arranged on different frameworks for the two parental figures.     

Career meta-capacities and retention factors of recruitment advertising agencies: An exploratory study

This study aimed to determine the extent to which employees’ career adaptability and employability capacities predicted employee retention factors in the information sector industry. A probability sample of 337 South African recruitment advertising employees participated in the study (females = 65.9%; black Africans = 53.4%, predominantly early career stage (aged > 40 years = 57.9%). The employees responded to surveys on their career adaptability, employability capacities, and job retention considerations. Step-wise hierarchical regression analysis was computed to predict employee retention factors from their career meta-capacities of career adaptability and employability attributes. Results suggest the career meta-capacities to explain 71% of the variance in employee retention factors. Moreover, overall career adaptability (concern, control, curiosity, and cooperation) predict the overall retentions factors of employees. White employees self-reported with higher work retention and career opportunities than employees of other races/ethnicities. Career adaptability and employability capabilities matter for talented employee retention in the information sector industry.     

Investigating emotional contagion in dogs (<Emphasis Type="Italic">Canis familiaris</Emphasis>) to emotional sounds of humans and conspecifics

Emotional contagion, a basic component of empathy defined as emotional state-matching between individuals, has previously been shown in dogs even upon solely hearing negative emotional sounds of humans or conspecifics. The current investigation further sheds light on this phenomenon by directly contrasting emotional sounds of both species (humans and dogs) as well as opposed valences (positive and negative) to gain insights into intra- and interspecies empathy as well as differences between positively and negatively valenced sounds. Different types of sounds were played back to measure the influence of three dimensions on the dogs’ behavioural response. We found that dogs behaved differently after hearing non-emotional sounds of their environment compared to emotional sounds of humans and conspecifics (“Emotionality” dimension), but the subjects responded similarly to human and conspecific sounds (“Species” dimension). However, dogs expressed more freezing behaviour after conspecific sounds, independent of the valence. Comparing positively with negatively valenced sounds of both species (“Valence” dimension), we found that, independent of the species from which the sound originated, dogs expressed more behavioural indicators for arousal and negatively valenced states after hearing negative emotional sounds. This response pattern indicates emotional state-matching or emotional contagion for negative sounds of humans and conspecifics. It furthermore indicates that dogs recognized the different valences of the emotional sounds, which is a promising finding for future studies on empathy for positive emotional states in dogs.     

The Higher Your Implicit Affiliation‐Intimacy Motive,the More Loneliness Can Turn You Into a Social Cynic: A Cross‐Cultural Study

Research has shown that the strength of the implicit affiliation‐intimacy motive moderates the effects of satisfaction and frustration of the need for affiliation‐intimacy: Low relatedness was more closely related to envy for people high in the implicit affiliation‐intimacy motive. The present study tests a moderating effect of the strength of the implicit affiliation‐intimacy motive on the association between low relatedness and social cynicism in samples of elderly people from Germany, the Czech Republic, and Cameroon. A total of 616 participants provided information on their implicit affiliation‐intimacy motive, relatedness, and social cynicism. As hypothesized, a moderation effect of the strength of the implicit affiliation‐intimacy motive was found that held true regardless of participants’ culture of origin: For people high in the implicit affiliation‐intimacy motive, a lack of relatedness was associated with higher levels of social cynicism. Our findings complement other theories stating that positive relationships with others are a significant part of successful aging.