Dominance behavior of paired primates in two settings.

3 species of monkeys (1 male pigtail, 3 male and 2 female militaries, and 1 male and 2 female monas) were tested by paired comparisons for dominance. The 2 settings were a Wisconsin General Test Apparatus and a room-size Skinner-type lever apparatus. The major indices of dominance were aggression, retaliation, and the amount of food consumed. Intrasession dominance relations were very stable and the correlations between settings ranged from moderate (rho = .60) to high (rho = .90). Aggression was a function of proximity in the dominance hierarchy, the absolute level in the hierarchy, species, and weight. The findings were discussed in relation to the nature of the task and ecological considerations; finally, monkey behavior was contrasted with rat behavior in similar situations in terms of ability to comprehend problems and natural modes of competitive behavior. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Dimensions of impulsive behavior in adolescents: Laboratory behavioral assessments.

Impulsivity is a multifaceted construct that defines a range of maladaptive behavioral styles. The present research aimed to identify different dimensions of impulsive behavior in adolescents from a battery of laboratory behavioral assessments. In one analysis, correlations were examined between two self report and seven laboratory behavioral measures of impulsivity. The correlation between the two self report measures was high compared to correlations between the self report and laboratory behavioral measures. In a second analysis, a principal components analysis was performed with just the laboratory behavioral measures. Three behavioral dimensions were identified--"impulsive decision-making", "impulsive inattention", and "impulsive disinhibition". These dimensions were further evaluated using the same sample with a confirmatory factor analysis, which did support the hypothesis that these are significant and independent dimensions of impulsivity. This research indicates there are at least three separate subtypes of impulsive behavior when using laboratory behavioral assessments with adolescent participants. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

玲珑金矿田金矿成矿地质背景特征研究

通过研究前人关于玲珑金矿田的大量科研文献,从地层和岩浆岩的成生时代、控矿构造特征,系统地分析了玲珑金矿田内金矿产出的地质背景,指出了玲珑金矿田内的找矿方向,为东山矿床深部探、找矿方案设计提供了基础依据.     

Social psychology of behavior modification: Problems of implementation in natural settings.

Discusses problems encountered by psychologists who have attempted to use behavior modification principles in applied settings, and illustrates these problems through the authors' experiences implementing a behavior modification system at a large state training school for male delinquent adolescents. Difficulties developed as a result of (a) institutional constraints causing frustrating setbacks or delays in implementing certain aspects of the program; (b) external pressures exercised by political, economic, or administrative forces which endorsed changes in conflict with behavior modification principles; (c) misunderstandings caused by inconsistencies in language and meanings used by behavior modifier psychologists and indigenous staff; (d) inconsistent reinforcement given by indigenous staff and created by peer pressure; (e) limited resources restricting certain aspects of a behavior modification program (e.g., behavior measurement); (f) labels used to suggest certain values (e.g., recreation, therapy, and education) which were upon occasion in conflict with the concept of positive reinforcement; (g) perceived inflexibility of behavior modifiers seeking to ensure program integrity; and (h) compromises necessary to remain in the applied setting. It is concluded that psychologists seeking to implement institutional change in applied settings must be aware of the theoretical limitations of behavior modification. (35 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Laboratory and self-report assessments of impulsive behavior in adolescent daily smokers and nonsmokers.

This research compared adolescent daily smokers (n = 25) and nonsmokers (n = 26) on different measures of impulsivity. Assessments included question-based measures of delay (DDQ) and probability (PDQ) discounting, a measure of behavioral disinhibition (go-stop task), and a self-report measure of impulsivity (Barratt Impulsiveness Scale-Adolescent). Adolescent smokers were more impulsive on the DDQ and Barratt Impulsiveness Scale--Adolescent but not on the PDQ or the go-stop task. However, there was a significant interaction between smoking status and gender on the go-stop task, with male smokers performing less impulsively on this measure than male nonsmokers--an effect not observed with the female adolescents. These findings indicate that adolescents who smoke cigarettes are more impulsive with respect to some, but not all, types of impulsivity than are adolescents who do not smoke. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

HIV/AIDS-related behavior change among injecting drug users in different national settings

1. The ability of airway epithelial cells to produce insulin-like growth factor I may be important in the pathogenesis of subepithelial fibrosis observed in the airways of patients with asthma. We determined whether human airway epithelial cells are capable of producing polypeptide mediators that could induce fibroblast proliferative activity, in particular insulin-like growth factor I. 2. We examined 12 primary cultures of human airway epithelial cells grown to confluence on collagen gel-coated dishes. Using a colorimetric assay based on the uptake and subsequent release of Methylene Blue, increased proliferation of human fetal lung fibroblasts was detected in conditioned media from airway epithelial cells. The median stimulation of fibroblast proliferation was 49.9% (range 25.6-113.3%) above control values (observed at 1:2 dilution of media). 3. A neutralizing antiserum to insulin-like growth factor I partly inhibited fibroblast proliferation induced by epithelial cell conditioned media by 52.2% (49.9-109%; n = 5). 4. Radioimmunoassay for insulin-like growth factor I in conditioned media demonstrated a median concentration of 54.1 ng/ml (32.4-96.8 ng/ml). 5. Insulin-like growth factor I mRNA was detected in epithelial cell monolayers by Northern blot analysis using an insulin-like growth factor I cDNA probe. 6. The insulin-like growth factor I gene is expressed in cultured human airway epithelial cells, which also secrete insulin-like growth factor I protein. Insulin-like growth factor I also accounts for the major mitogenic activity for fibroblasts of cultured human epithelial cell conditioned media. Insulin-like growth factor I may function in a paracrine manner to modulate fibroblast behaviour and may be involved in airway processes, such as those occurring in asthma.     

Roger G. Barker and behavior settings: A commentary.

Observes that R. G. Barker's (see record 1981-04344-001) paper documents and illustrates his approach to science, his lifelong concern with environment–behavior relations, the major influences that have shaped his thought, and the utility of the behavior setting concept. (14 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The effects of race and problem type on teachers' assessments of student behavior.

The authors tested the hypothesis that race bias in teacher evaluations may be problem specific by examining the extent to which ratings of child behavior were influenced by the interaction between the race of the child and the type of presenting behavior. Teachers (N=197) were presented with three vignettes (overcontrolled, undercontrolled, and "normal"), systematically paired with a photograph of a male child (African American, Asian American, or Caucasian). Respondents rated the seriousness, referability, and typicality of the behavior; the child's family life; academic ability and performance; and causal dimensions. Although results did not reveal a bias in the ratings of African American students, data suggest that stereotypes remain embedded in teachers' interpretive framework for Asian Americans, particularly regarding expectations of overcontrolled traits. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Parents' hostility in dyadic marital and triadic family settings and children's behavior problems.

The authors examined the relation between parents' hostility during conflict-focused discussions and child behavior problems. Parents engaged in 3 discussions: a dyadic marital discussion of marital disagreements, a dyadic marital discussion of child-related disagreements, and a triadic family discussion with the child about the child-related disagreements. Eighty-nine 2-parent community families with a child aged 9–13 years participated. A significant 3-way interaction between interparental hostility, parent-to-child hostility, and child sex accounted for variance in children's behavior problems. Among boys, higher levels of parent-to-child hostility during family discussions exacerbated the effects of interparental hostility on boys' adjustment. Thus, exposure to higher levels of both interparental and parent-to-child hostility may put boys at risk for developing internalizing and externalizing behavior problems. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

重量法测硅量不确定度的简要合理评定

重量法测硅量过程长,试验量少,用常用的方法评定本试验的不确定度,无法有足够的试验数据来进行各种计算。根据试验引入不确定度两个主要方面,进行简要合理的评定。     

Assessment and modification of alcoholics drinking behavior in controlled laboratory settings: a cautionary note

A group of 10 prepubertal boys was studied during prolonged exercise (60 min) on bicycle ergometer and on treadmill at two levels of work load (appr. 40% and 60% VO2 max). The hematocrit, serum proteins, Cl- and K+ were followed, and from the blood hematocrit changes the plasma volume changes were calculated. At the exercises of lower intensity of both types a slight hemodilution was found (appr. +5% increase in plasma volume), at higher intensity practically no changes could be demonstrated. These findings are supported by the values of serum protein concentration, where no increase was found, and by the fact that at the lower work loads a rather decreasing trend was found for this blood constituent. These findings are at variance with those in adults under similar conditions. The authors suggest that different changes of plasma volume during exercise in boys than in adults could be related to the disparate lactate production and fate in these age groups.     

Effects of dietary vegetable oils on behavior and drug responses in mice

Previously, we noted significant differences in the behavioral patterns of mice fed safflower oil with a very low alpha-linolenate/linoleate ratio and perilla oil with a high alpha-linolenate/linoleate ratio from mothers to offsprings. In this report, we compared the behavior and drug responses in mice fed diets containing six different vegetable oils-corn, rapeseed, soybean, safflower, perilla and a mixture of perilla and safflower oils- for a relatively short period: 8 months after weaning. Soybean oil is a component of most conventional diets and was used as a control. The alpha-linolenate/linoleate ratios of the oils appeared to affect the locomotor activities in a wheel cage: the activity decreased in the order of safflower, the mixture (1:1) and the perilla oil groups. However, the rapeseed oil group exhibited much higher locomotor activity than that expected from the alpha-linolenate/linoleate ratio. Additionally, the rapeseed oil group exhibited unusual behavior patterns, including higher ambulation and rearing activities, faster acquisition of the water maze task and slower habituation behavior as compared with the control group. Susceptibility to pentobarbital anesthesia tended to be higher in the rapeseed oil group. The differences in the alpha-linolenate/linoleate ratios of these oils alone do not account for the observed differences in the behavioral patterns among the six dietary groups. Although we cannot exclude the possibility that the observed behavioral anomaly is due to the unique fatty acid composition of rapeseed oil, we speculate that a factor(s) other than fatty acids in rapeseed oil affected nervous system functions.     

Brief dynamic psychotherapy in community mental health settings: Providing a holding environment on a short-term basis.

Because of funding limitations, Community Mental Health therapists must often apply brief therapy techniques to an inappropriate clientele. Previously developed techniques hasten treatment by means of the therapist actively focusing interpretations on either preoedipal or oedipal issues. An actively focused technique would be inappropriate for most Community Mental Health patients, however, because it would not effectively address their strong dependency needs. Active focusing would not provide the holding environment which is crucial in treating dependent patients. More appropriate is a moderate amount of focusing in the context of tolerant, unfocused listening to provide a holding environment. This approach is illustrated with case examples. (PsycINFO Database Record (c) 2010 APA, all rights reserved)