Young adult female fragile X premutation carriers show age- and genetically-modulated cognitive impairments

The high frequency of the fragile X premutation in the general population and its emerging neurocognitive implications highlight the need to investigate the effects of the premutation on lifespan cognitive development. Until recently, cognitive function in fragile X premutation carriers (fXPCs) was presumed to be unaffected by the mutation. Here we show that young adult female fXPCs show subtle, yet significant, age- and FMR1 gene mutation-modulated cognitive impairments as tested by a quantitative magnitude comparison task. Our results begin to define the neurocognitive endophenotype associated with the premutation in adults, who are at risk for developing a neurodegenerative disorder associated with the fragile X premutation. Results from the present study may potentially be applied toward the design of early interventions wherein we might be able to target premutation carriers most at risk for degeneration for preventive treatment.     

Price‐Matching Guarantees and Consumer Evaluations of Price Information

In 3 experiments, we show that price‐matching guarantees affect the process through which consumers translate price information into subjective judgments. In Experiment 1, we find that price‐matching guarantees appear to change the standard used in price evaluation by raising consumers’ estimates of the lowest and average prices in the market. This leads consumers to perceive products and stores that offer price‐matching guarantees as less expensive. In Experiment 2, we show that evaluations of product price information are affected by the presence of a price‐matching guarantee only when consumers do not know the range of market prices. In Experiment 3, we extend these findings to show that consumer evaluations of the cost of products in a store, inferred on the basis of store characteristics, are also influenced by the presence of a price‐matching guarantee.     

Knowing your place: self-perceptions of status in face-to-face groups

Status is the prominence, respect, and influence individuals enjoy in the eyes of others. Theories of positive illusions suggest that individuals form overly positive perceptions of their status in face-to-face groups. In contrast, the authors argue that individuals' perceptions of their status are highly accurate--that is, they closely match the group's perception of their status--because forming overly positive status self-perceptions can damage individuals' acceptance in a group. Therefore, the authors further argue that individuals are likely to refrain from status self-enhancement to maintain their belongingness in a group. Support for their hypotheses was found in 2 studies of status in face-to-face groups, using a social relations model approach (D. A. Kenny & L. La Voie, 1984). Individuals showed high accuracy in perceiving their status and even erred on the side of being overly humble. Moreover, enhancement in status self-perceptions was associated with lower levels of social acceptance.     

The Association of Religiosity and Political Conservatism: The Role of Political Engagement

Some argue that there is an organic connection between being religious and being politically conservative. We evaluate an alternative thesis that the relation between religiosity and political conservatism largely results from engagement with political discourse that indicates that these characteristics go together. In a combined sample of national survey respondents from 1996 to 2008, religiosity was associated with conservative positions on a wide range of attitudes and values among the highly politically engaged, but this association was generally weaker or nonexistent among those less engaged with politics. The specific political characteristics for which this pattern existed varied across ethno‐religious groups. These results suggest that whether religiosity translates into political conservatism depends to an important degree on level of engagement with political discourse.     

Examining the Relationship Between Personality and Work Values Across Career Stages

The study examines the strength of association between personality and work values, and their variations across career stages of exploration, establishment, and maintenance. The results showed that the executives in exploration stage were lower on needs of altruism and economic returns as compared to executives from establishment and maintenance stages, but higher on neuroticism and conscientiousness dimensions of personality. Neuroticism negatively predicted creativity and aesthetics; and conscientiousness negatively predicted management. Security was positively predicted by extraversion, but negatively predicted by openness. However, the variance explained was very weak, indicating that these constructs could be independent or unrelated. The implications have been discussed in the study.     

Formation of Al3Ni2-type nanocrystalline τ 3 phases in the Al–Cu–Ni system by mechanical alloying

An elemental powder mixture of Al (70 at.%), Ni (15 at.%) and Cu (15 at.%) was milled in a high-energy ball mill for various times ranging from 10 to 100?h to form ternary intermetallic alloys. X-ray diffraction and transmission electron microscopy techniques were employed for characterization of the samples. The dissolution of the individual elements into an alloy led to the formation of a τ₃ vacancy-ordered phase after 100?h of milling. This phase was found to be quite stable against milling, and no other crystalline and amorphous phases could be detected. The powder after 100?h of milling was found to contain mostly τ₃ nanophases with partial ordering, and with crystallite sizes in the range 10–20?nm along with a lattice strain of ～0.675%. The milled powder, after annealing at 700°C for 20, 40 and 60?h, revealed the formation of a strain-free and ordered τ₃ phase with a crystallite size of 80?nm, indicating grain coarsening. It is interesting to note that the mechanical energy imparted during milling could not completely destroy the vacancy ordering in the τ₃ phase, unlike other stoichiometric Al–Cu–transition metal (TM) systems, where the disordered B2 (bcc) phase is commonly observed instead of any vacancy-ordered phases.     

Core self-evaluations as causes of satisfaction: The mediating role of seeking task complexity

This study examined the mediating role of task complexity in the relationship between core self-evaluations (CSE) and satisfaction. In Study 1, eighty three undergraduate business students worked on a strategic decision-making simulation. The simulated environment enabled us to verify the temporal sequence of variables, use an objective measure of task complexity, and control confounding factors. In Study 2, we surveyed 108 full-time employees. In addition to verifying the temporal sequencing of variables in Study 1, both studies demonstrate that people with higher CSE actually choose/seek higher levels of complexity on their tasks, which directly or indirectly increases their task/work satisfaction.