Neuropsychological evidence for "word-meaning deafness" in a Spanish-speaking patient

In this paper we present a case of "word-meaning deafness," characterised by serious problems in the comprehension of spoken language, whilst repetition and writing words and non-words from dictation are preserved. This performance indicates the impossibility of correctly accessing phonological representation from the semantic representation of words. Neuropsychological evidence on specific alterations in word-meaning disorders is scarce, and this study contributes new findings with a Spanish-speaking patient. The nature of the processes involved in understanding language and the cerebral mechanisms that might be affected in each case were discussed, in accordance with current neuropsychological theories.     

Drug postulate of Eysenck in the rat

The present work is an attempt to investigate the Drug Postulate of Eysenck in the animal field. The Ss were 36 male Wistar rats. The extraversion measure used was animal ambulation in a low-frightening open-field. d-Amphetamine, reserpine and saline were administered before the extinction of a lever-press FR 25 schedule for food. The results show that reserpine produces a decrement in the resistance to extinction (RExt), while d-amphetamine produces a biphasic effect, increasing the RExt in high-ambulatory (extravert) rats and leaving the RExt of low-ambulatory (introvert) rats unaffected. Therefore, reserpine acted as a depressant drug, d-amphetamine as a stimulant drug and ambulation as extraversion.     

Me and my 400 friends: the anatomy of college students' Facebook networks, their communication patterns, and well-being

Is there a trade-off between having large networks of social connections on social networking sites such as Facebook and the development of intimacy and social support among today's generation of emerging adults? To understand the socialization context of Facebook during the transition to adulthood, an online survey was distributed to college students at a large urban university; participants answered questions about their relationships by systematically sampling their Facebook contacts while viewing their Facebook profiles online. Results confirmed that Facebook facilitates expansive social networks that grow disproportionately through distant kinds of relationship (acquaintances and activity connections), while also expanding the number of close relationships and stranger relationships, albeit at slower rates. Those with larger networks estimated that larger numbers of contacts in their networks were observing their status updates, a form of public communication to one's entire contact list. The major function of status updates was emotional disclosure, the key feature of intimacy. This finding indicates the transformation of the nature of intimacy in the environment of a social network site. In addition, larger networks and larger estimated audiences predicted higher levels of life satisfaction and perceived social support on Facebook. These findings emphasize the psychological importance of audience in the Facebook environment. Findings also suggest that social networking sites help youth to satisfy enduring human psychosocial needs for permanent relations in a geographically mobile world--college students with higher proportions of maintained contacts from the past (primarily high school friends) perceived Facebook as a more useful tool for procuring social support.     

Online racial discrimination and the protective function of ethnic identity and self-esteem for African American adolescents

A growing body of literature has shown that being victimized online is associated with poor mental health. Little is known about the factors that protect youth from the negative outcomes that may result from these victimization experiences, particularly those related to race. Using a risk and resilience framework, this study examined the protective function of ethnic identity and self-esteem among African Americans who experience online racial discrimination. For the sample of 125 adolescents, hierarchical regression results revealed that higher levels of ethnic identity and self-esteem significantly moderated the negative impact of online racial discrimination on anxiety levels. These findings show that ethnic identity and self-esteem can buffer the negative mental health outcomes associated with online racial discrimination, at least with respect to adolescents' anxiety. Findings from the current study have significant implications for adolescent adjustment given the increased time youth spend doing online activities.     

Childhood Executive Function Continues to Predict Outcomes in Young Adult Females with and Without Childhood-Diagnosed ADHD

We prospectively followed an ethnically and socioeconomically diverse sample of preadolescent girls with ADHD (n?=?140) and matched comparison girls (n?=?88) over a period of 10?years, from middle childhood through late adolescence/young adulthood. Our aim was to examine the ability of childhood measures of executive function (EF) to predict functional outcomes at follow-up. Measures of EF comprised the childhood predictors, with academic, socioemotional, occupational, and global functioning serving as young adult criterion measures. Results indicated that childhood EF - particularly measures of global EF and working memory - predicted academic and occupational functioning across our entire sample (independent of diagnostic group status), but diagnostic status (ADHD versus comparison) moderated the association between (a) working memory and reading achievement and (b) a global EF measure and suspensions/expulsions. That is, in the ADHD group, low working memory predicted poor reading scores and impaired global EF predicted higher suspensions/expulsions, but this was not the case in the comparison group. Overall, these results extend previous findings of associations between EF and adolescent outcomes in girls with and without ADHD into young adulthood. Findings continue to suggest the importance of assessing and developing interventions that target EF impairments early in life in order to prevent long-term difficulties across a range of important functional domains.     

Maternal attachment representations and the development of very low birth weight premature infants at two years of age

There is a consensus that prematurity could increase the risk of attachment impairment. We studied 90 premature children with very low birth weights (<1,500 g) and 96 healthy children born at term with similar age and sociodemographic characteristics. Our objective was to assess maternal stress and attachment representations, and compare development indices on both groups at 2 years of age. Premature infants had a medium‐to‐severe degree of immaturity and biological risk (M gestational age = 29.98 weeks; birth weight = 1,159.76 g), with 57% staying in the ICU ≥1 week. These children born prematurely had lower scores on the development indices within the normal range. Mothers of premature infants (n = 74) reported higher levels of stress during their first year of life (59%) than did controls (41%), but no significant differences were detected in maternal attachment discourse between the two groups. The findings confirm that premature birth has a great influence on maternal emotional responses and the health and development of children in the first years of life, and indicate that stress responses in parents and warning signs for attachment problems should be assessed as early as possible.     

Social Isolation and Perceived Barriers to Establishing Social Networks Among Latina Immigrants

Research has identified numerous mechanisms through which perceived social isolation and lack of social support negatively impact health. Little research attention has been dedicated to factors that influence the development of social networks, which have the potential to decrease perceptions of social isolation and provide social support. There is mixed evidence concerning the availability of supportive social networks for Latinos in the US. This study explores trauma-exposed Latina immigrants’ experiences of social isolation in the US and its perceived causes. Twenty-eight Latina immigrant women participated in an interview about traumatic experiences. Informal help seeking and the availability of friendships in the US were also queried. Frequent comparisons between experiences in their home countries and in the US shaped the emerging themes of social isolation and lack of social support. Women reported feeling lonely, isolated, closed-in, and less free in the US due to family separation and various obstacles to developing and maintaining relationships. Socioeconomic, environmental, and psychosocial barriers were offered as explanations for their limited social networks in the US. Understanding experiences of social isolation as well as barriers to forging social networks can help inform the development of social support interventions that can contribute to improved health among Latinos.     

American Indian Acculturation: Tribal Lands to Predominately White Postsecondary Settings

Grounded theory provided a framework for examining 25 acculturating American Indian college students, 12 relatives of acculturating American Indians, and 7 postsecondary administrators. Acculturation was defined as the transformative process resulting from the integration of tribal culture and predominately White culture. Data sources included individual interviews, focus groups, and artifact analysis. The 16 emergent themes form an acculturation theory centered on a strength‐based acculturation process affecting American Indians’ transition to predominately White postsecondary settings.     

‘We Are All the Same,We All Are Mestizos’: Imagined Populations and Nations in Genetics Research in Colombia

In Colombia, as in other Latin American countries, current population genetics research is based on the understanding that Colombians constitute a mestizo nation, given the admixture process that took place between Africans, Amerindians, and Europeans during colonial times. The mestizo is a pervasive category used by geneticists to conduct, organise, and publish research studies that deal with the continent's peopling process and the genetic makeup of its contemporary population(s). It is also the dominant imaginary for the Colombian population and a key nation-building ideology. By tracing how this category moves and is used across four Colombian genetics laboratories, it is possible to discern that despite its apparently clear-cut boundaries, the mestizo is contingent, contested, and flexible, allowing for multiple understandings and usages. This flexibility and multiplicity are visible in the quantification of genetic ancestry, the divisions of geographical location, and the understanding of gender. Such understandings allow one to think about a homogeneous nation (inclusive) that is simultaneously heterogeneous (exclusive); they provide multiple but not necessarily contradictory possibilities of being mestizo, allowing the coexistence of images of the nation that could otherwise seem contradictory; and they permit navigation around contested terms such as race, while simultaneously thinking of mixed races or racialised individuals. Finally, these flexible and multiple constructions of the mestizo (re)produce various subjects as ‘other’, whether they are women, the Indigenous, the black/dark, or the poor.