Maternal separation alters social odor preference development in infant mice (Mus musculus).

This study examined whether daily periods of maternal separation during the first two weeks of life would decrease attraction to familiar nest odors in CD-1 mice 10 and 14 days old. We also investigated whether placing a group of mice (Mus musculus) in nest shavings during the 180-min separation period would mitigate possible separation-induced deficits. The maternal separation procedure has been widely used as a rodent model for the effects of inconsistent or inadequate early caretaking on human development. From postnatal day (PND) 1 to 14, litters were separated from the dam, but not littermates for either 15 or 180 min, or were facility-reared controls. Control, facility-reared mice preferred home-cage nest to clean familiar shaving odors on PND 10, but not PND 14. In contrast, home-cage nest odors attracted maternally separated mice on both test days. Our results suggest that maternal separation maintains the olfactory tether to the nest in a period when the attraction normally begins to weaken. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Bone cell proliferation on carbon nanotubes

We explored the use of carbon nanotubes (CNTs) as suitable scaffold materials for osteoblast proliferation and bone formation. With the aim of controlling cell growth, osteosarcoma ROS 17/2.8 cells were cultured on chemically modified single-walled (SW) and multiwalled (MW) CNTs. CNTs carrying neutral electric charge sustained the highest cell growth and production of plate-shaped crystals. There was a dramatic change in cell morphology in osteoblasts cultured on MWNTs, which correlated with changes in plasma membrane functions.     

Graphene oxide windows for in situ environmental cell photoelectron spectroscopy

The performance of new materials and devices often depends on processes taking place at the interface between an active solid element and the environment (such as air, water or other fluids). Understanding and controlling such interfacial processes require surface-specific spectroscopic information acquired under real-world operating conditions, which can be challenging because standard approaches such as X-ray photoelectron spectroscopy generally require high-vacuum conditions. The state-of-the-art approach to this problem relies on unique and expensive apparatus including electron analysers coupled with sophisticated differentially pumped lenses. Here, we develop a simple environmental cell with graphene oxide windows that are transparent to low-energy electrons (down to 400 eV), and demonstrate the feasibility of X-ray photoelectron spectroscopy measurements on model samples such as gold nanoparticles and aqueous salt solution placed on the back side of a window. These proof-of-principle results show the potential of using graphene oxide, graphene and other emerging ultrathin membrane windows for the fabrication of low-cost, single-use environmental cells compatible with commercial X-ray and Auger microprobes as well as scanning or transmission electron microscopes.     

Guided Jury Discretion in Capital Murder Cases: The Role of Declarative and Procedural Knowledge.

This article analyzes whether state-approved jury instructions adequately guide jury discretion in the penalty phase of first-degree murder trials. It examines Eighth Amendment jurisprudence regarding guided jury discretion, emphasizing the use of "empirical factors" to examine the quality of state-approved instructions. Psychological research and testimony on the topic of the comprehensibility of jury logical instructions are reviewed. Data from a recently completed simulation with 80 deliberating juries showed that current instructions do not adequately convey the concepts and processes essential to guiding penalty phase judgments. An additional simulation with 20 deliberating juries demonstrated that deliberation alone does not correct for jurors' errors in comprehension. The article concludes with recommendations for policy and future research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

"Affect dynamics, affective forecasting, and aging": Correction to Nielsen, Knutson, and Carstensen (2008).

Reports an error in "Affect dynamics, affective forecasting, and aging" by Lisbeth Nielsen, Brian Knutson and Laura L. Carstensen (Emotion, 2008[Jun], Vol 8[3], 318-330). The first author of the article was listed as being affiliated with both the National Institute on Aging and the Department of Psychology, Stanford University. Dr. Nielsen would like to clarify that the research for this article was conducted while she was a postdoctoral fellow at Stanford University. The copyright notice should also have been listed as "In the Public Domain." (The following abstract of the original article appeared in record 2008-06717-002.) Affective forecasting, experienced affect, and recalled affect were compared in younger and older adults during a task in which participants worked to win and avoid losing small monetary sums. Dynamic changes in affect were measured along valence and arousal dimensions, with probes during both anticipatory and consummatory task phases. Older and younger adults displayed distinct patterns of affect dynamics. Younger adults reported increased negative arousal during loss anticipation and positive arousal during gain anticipation. In contrast, older adults reported increased positive arousal during gain anticipation but showed no increase in negative arousal on trials involving loss anticipation. Additionally, younger adults reported large increases in valence after avoiding an anticipated loss, but older adults did not. Younger, but not older, adults exhibited forecasting errors on the arousal dimension, underestimating increases in arousal during anticipation of gains and losses and overestimating increases in arousal in response to gain outcomes. Overall, the findings are consistent with a growing literature suggesting that older people experience less negative emotion than their younger counterparts and further suggest that they may better predict dynamic changes in affect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The territory ahead for multicultural competence: The "spinning" of racism.

Multicultural competence has become a mainstay within the training of professional psychologists, yet important areas within this framework remain to be more fully addressed. In particular, the dynamics of contemporary forms of racism have largely gone unexplored, depriving psychologists of clear direction in exploring the deepest levels of racist influences in their work. This qualitative analysis sought to shed light into this area by studying White people's experiences of race and racism. Although most affirmed the existence of racism, it was "spun" by most White participants--in other words, interpreted to their own advantage-into a problem that lies outside the scope of their own lives and responsibilities. Implications and resources for the practice and training of professional psychologists are presented. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Lack of Long-Lasting Consequences of Starvation on Eating Pathology in Jewish Holocaust Survivors of Nazi Concentration Camps.

The purpose of the present study was to investigate whether Holocaust survivors will show the same eating pathologies that were found in other participants who had also undergone starvation. Fifty-five Holocaust survivors and 43 matched control participants answered a questionnaire designed to explore eating problems and pathologies described in the literature as lasting for decades after a period of severe food restriction. Confirmation of the survivors' reports was obtained from their children. No significant differences in current eating habits were found between the Holocaust survivors and their matched controls. Prolonged starvation in Holocaust survivors did not lead to disordered eating habits in the sample. These results conflict with the notion that severe starvation consistently leads to food preoccupation and disordered eating. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Books in school psychology: 1970 to the present.

Examines the content of school psychology books published between 1970 and 1985. The process of historical review reveals recent trends that have their genesis in both internal professional developments and external social, political, and legal pressures on the field. Perspectives on the current status and potential future of the profession of school psychology, as derived from the literature, are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Differentiating bulimic-anorexic from normal families using interpersonal and behavioral observational systems.

Compared the ability of interpersonal and behavioral observational systems to differentiate 16 families with a bulimic-anorexic daughter (mean age 18.2 yrs) from 24 control families. Trained coders observed father–mother–daughter triads using 2 theoretically divergent observational systems: A. L. Robin and J. G. Weiss's (1980) Marital Interaction Coding System (MICS), a cognitive-behavioral approach, and the L. S. Benjamin et al (in press) Structural Analysis of Social Behavior (SASB), an interpersonal system. Results from discriminant and regression analyses of 4 types of parent–daughter interactions show that both the SASB and the MICS successfully discriminated between groups to similar extents and that each system added to the predictive power of the other. Jointly, the observational systems accounted for about 50% of the variance in the families' diagnostic status. The key variables from both observational systems were interpersonal codes, including positive and negative dimensions, whereas problem-solving codes did not distinguish the groups. The merits of the 2 observational systems are discussed. (16 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Relationship of elementary school children's private speech to behavioral accompaniment to task, attention, and task performance.

Tested assumptions drawn from Vygotsky's (1934 [1962]) theory about the development of private speech (PS) and its relationship to task performance, attention, and motor behaviors accompanying task orientation. 75 1st and 3rd graders were observed in their classrooms while engaged in math seatwork. Results show a developmental trend toward increasingly task-relevant and less audible PS and a shifting relationship of intelligence to PS with grade, which was consistent with Vygotsky's assumption that PS undergoes a curvilinear course of development that is governed by cognitive maturity. The relationship of PS to task success, as measured by classroom assignment performance and scores on the mathematics portion of the Stanford Achievement Test, varied with grade and mental ability (Cognitive Abilities Test—Primary Battery). Findings suggest that using the type of PS that is in natural developmental ascendence, given the child's level of intellectual maturity, is positively related to performance, but reverting to less mature forms is negatively predictive. Use of task-relevant PS predicted greater task attentional focus and reduction of extraneous, tension-reducing motor behaviors. Findings support Vygotsky's theory of the functional significance of PS in children's cognitive development and the validity of the theory for children's task-related behaviors in natural classroom learning contexts. (22 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)