Does Talker‐Specific Information Influence Lexical Competition? Evidence From Phonological Priming

In this study, we examined whether the lexical competition process embraced by most models of spoken word recognition is sensitive to talker‐specific information. We used a lexical decision task and a long lag priming experiment in which primes and targets sharing all phonemes except the last one (e.g., /bagaR/“fight” vs. /baga?/“luggage”) were presented in two separate blocks of stimuli. In Experiment 1, the competitor prime block was presented only once to listeners, and no modulation of the competitor priming effect as a function of a talker change between the primes and targets was observed. However, attenuation in the competitor priming effect in the case of a talker change between the primes and targets was observed in Experiment 2 in which the competitor prime block was presented five times to listeners. We discuss our findings in reference to hybrid models of spoken word recognition in which repetition of words with the same talker could be a key factor in the formation and access to talker‐dependent representations.     

Reflection for learning in doctoral training: writing groups,academic writing proficiency and reflective practice

This literature review highlights the benefits of participating in a doctoral writing group, with specific emphasis on how these learning communities foster reflective practice skills development. In particular, this review proposes that the process of continuous peer feedback and discussion benefits students by helping them verbalise their internal reflective thinking, fostering reflective practice skills development through various authentic learning experiences. Consequently, this review highlights the importance of establishing and supporting doctoral writing groups to further develop doctoral students’ personal epistemology, growth and professional practice.     

Chickadees discriminate contingency reversals presented consistently,but not frequently

Chickadees are high-metabolism, non-migratory birds, and thus an especially interesting model for studying how animals follow patterns of food availability over time. Here, we studied whether black-capped chickadees (Poecile atricapillus) could learn to reverse their behavior and/or to anticipate changes in reinforcement when the reinforcer contingencies for each stimulus were not stably fixed in time. In Experiment 1, we examined the responses of chickadees on an auditory go/no-go task, with constant reversals in reinforcement contingencies every 120 trials across daily testing intervals. Chickadees did not produce above-chance discrimination; however, when trained with a procedure that only reversed after successful discrimination, chickadees were able to discriminate and reverse their behavior successfully. In Experiment 2, we examined the responses of chickadees when reversals were structured to occur at the same time once per day, and chickadees were again able to discriminate and reverse their behavior over time, though they showed no reliable evidence of reversal anticipation. The frequency of reversals throughout the day thus appears to be an important determinant for these animals’ performance in reversal procedures.     

Fetal neurobehavioral development: a tale of two cities

Longitudinal neurobehavioral development was examined in 237 fetuses of low-risk pregnancies from 2 distinct populations--Baltimore, Maryland, and Lima. Peru--at 20, 24, 28, 32, 36, and 38 weeks gestation. Data were based on digitized Doppler-based fetal heart rate (FHR) and fetal movement (FM). In both groups. FHR declined while variability, episodic accelerations, and FM-FHR coupling increased, with discontinuities evident between 28 and 32 weeks gestation. Fetuses in Lima had higher FHR and lower variability, accelerations, and FM-FHR coupling. Declines in trajectories were typically observed 1 month sooner in Lima, which magnified these disparities. Motor activity differences were less consistent. No sex differences in fetal neurobehaviors were detected. It is concluded that population factors can influence the developmental niche of the fetus.     

The Yin and Yang of cell cycle progression and differentiation in the oligodendroglial lineage

In white matter disorders such as leukodystrophies (LD), periventricular leucomalacia (PVL), or multiple sclerosis (MS), the hypomyelination or the remyelination failure by oligodendrocyte progenitor cells involves errors in the sequence of events that normally occur during development when progenitors proliferate, migrate through the white matter, contact the axon, and differentiate into myelin-forming oligodendrocytes. Multiple mechanisms underlie the eventual progressive deterioration that typifies the natural history of developmental demyelination in LD and PVL and of adult-onset demyelination in MS. Over the past few years, pathophysiological studies have mostly focused on seeking abnormalities that impede oligodendroglial maturation at the level of migration, myelination, and survival. In contrast, there has been a strikingly lower interest for early proliferative and differentiation events that are likely to be equally critical for white matter development and myelin repair. This review highlights the Yin and Yang principles of interactions between intrinsic factors that coordinately regulate progenitor cell division and the onset of differentiation, i.e. the initial steps of oligodendrocyte lineage progression that are obviously crucial in health and diseases.     

Nightmare frequency,nightmare distress,and anxiety

Using the self-reports of 300 university students, we replicated and extended the results of a 1971 study of Hersen by demonstrating a significant relationship between both nightmare frequency and nightmare distress with two dimensions of anxiety. Our results are not consistent with the 1990 findings of Wood and Bootzin who concluded that both nightmare frequency and nightmare distress were not correlated with anxiety.     

An empirical investigation of regional differences in consumption behaviors in an emerging economy

Widely regarded as one of the most dynamic economies in Southeast Asia, Vietnam has increasingly attracted scholarly interest from diverse business disciplines. However, previous marketing research on Vietnam largely treats the country as a homogenous society. We draw on the literature in sociology, geography, history and predict that significant regional differences exist in consumers' consumption behaviors between the North and South of Vietnam, bearing important implications for international marketers. Using secondary survey data collected by an international market research firm, we show that consumers in Hanoi (HN) and Ho Chi Minh City (HCMC) differ greatly in how they perceive the impact of an economic crisis, how they change their consumption behaviors as a result, and whether they will cut back on spending on themselves, their families, and children. Our results also demonstrate that HN and HCMC consumers differ in their attitude toward luxury product consumption, attitude toward advertising, and marketing versus non-marketing controlled sources of information. Our research provides important implications for both managers and researchers interested in this fast-growing economy.     

Advancing a critical social psychological perspective on women's leadership: A case illustration from the Global South

When applied to the Global South, mainstream positivist approaches to work and organisational psychology impose alien theories of personality (the self) and leadership. In the case of women, they fail to capture the richness of their experiences of life and leadership, which are influenced by the nexus between history, power and marginalisation—for many, even oppression. The purpose of this article is to demonstrate the value of a critical social psychological approach, despite its grounding in the Global North discourse, to analyse women's leadership from a cross-cultural context. To illustrate, we provide an empirical example of a Vietnamese woman leader's life-story drawing on the theoretical resources from critical social psychology to interpret her experiences. When viewed from this perspective, women's leadership is understood within a dialogical space, which is prior to and more fundamental than any instrumental reason and technical rationality. It is argued that this approach resists essentialising assumptions about gender and cultural practices of leadership, providing a more liberating means to understand the life and leadership of Vietnamese women. In the final analysis, we argue that this study contributes to the nascent field of critical work and organisational psychology.     

Bystander Responses to Risk for Rape Perpetrated by a Friend,Acquaintance, or Stranger

This study explored bystander responses to risk for an alcohol-facilitated rape perpetrated by a friend, acquaintance, or stranger. Undergraduates (N = 331) were randomly assigned to read 1 of 3 scenarios in which an apparently sober male friend, acquaintance, or stranger leads an intoxicated woman into a bedroom. Participants completed self-report measures of intent to directly intervene and barriers to intervention. Compared to men, women reported greater intent to help the potential victim and fewer barriers to intervention. Participant gender moderated the effect of the bystander’s relationship with the potential perpetrator on intent to confront and responsibility to intervene. Men reported more confrontation and more responsibility to intervene when perpetrators were identified as either friends or acquaintances than strangers. In contrast, women reported more confrontation when perpetrators were identified as friends than either strangers or acquaintances. Bystander education programs that address specific barriers to intervening with strangers and acquaintances could promote more frequent bystander behavior.     

Interactive effects of subjective memory complaints and hypertension on learning and memory performance in the elderly

This study evaluated whether the relation between subjective memory complaints and cognitive performance is influenced by the presence of hypertension in the elderly. One hundred and five healthy older adults, 70–89 years of age, with and without hypertension treatment or diagnosis, completed a scale of subjective memory complaints. Participants were divided into those with mild memory concerns and those with minimal or no complaints. All participants completed a battery of neuropsychological tests including measures of verbal and nonverbal memory. After controlling for differences in age, gender, education, and overall intellectual ability, there were significant main effects for memory concerns and significant interactions for memory complaints and hypertension on several measures of memory performance. There were no main effects for hypertension on memory performance. Simple effects analyses of the interactions showed that the hypertensive complainers demonstrated poorer performance on measures of long-term memory and greater reliance on short-term recall than the hypertensive non-complainers. There were no differences in memory performance for the non-hypertensive groups. Among healthy elderly community-dwelling adults, those with mild subjective memory complaints in the context of hypertension demonstrated greater objective cognitive difficulties than those without hypertension as well as a greater reliance on a less efficient learning strategy. These findings suggest that memory concerns in the presence of hypertension may be important when evaluating treatment efficacy in these individuals and for identifying differences in cognitive aging.