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Altruism and social cheating in the social amoeba Dictyostelium discoideum.

The social amoeba, Dictyostelium discoideum, is widely used as a simple model organism for multicellular development, but its multicellular fruiting stage is really a society. Most of the time, D. discoideum lives as haploid, free-living, amoeboid cells that divide asexually. When starved, 10(4)-10(5) of these cells aggregate into a slug. The anterior 20% of the slug altruistically differentiates into a non-viable stalk, supporting the remaining cells, most of which become viable spores. If aggregating cells come from multiple clones, there should be selection for clones to exploit other clones by contributing less than their proportional share to the sterile stalk. Here we use microsatellite markers to show that different clones collected from a field population readily mix to form chimaeras. Half of the chimaeric mixtures show a clear cheater and victim. Thus, unlike the clonal and highly cooperative development of most multicellular organisms, the development of D. discoideum is partly competitive, with conflicts of interests among cells. These conflicts complicate the use of D. discoideum as a model for some aspects of development, but they make it highly attractive as a model system for social evolution.

Animals↗

Research policy and review 23. The view of academic social scientists on the 1991 U.K. Census of Population: a report of the Economic and Social Research Council Working Group.

This is a report on the survey conducted for the United Kingdom Census Office by the Economic and Social Research Council (ESRC) concerning the 1991 census. "The primary task was to solicit views on the priority which [academic social scientists] attached to the proposed topics to be covered by the Census and to ascertain their views on the changes in question wording which are under consideration.... Views were also sought on different methods for giving academics access to individual-level data from the 1991 Census."

Attitude↗

Social plasticity and early-diapausing females in a primitively social bee.

Many of the females of the first summer brood of the sweat bee Halictus rubicundus mate, soon vanish from the nesting site, undergo diapause, and return unworn the following spring to found their own nests without ever functioning as workers. Roughly half a season's foundresses may originate in this way. This finding contradicts previous assumptions regarding timing of reproductive production in sweat bees and offers a remarkable example of intraspecific social diversity; some females in the population behave as solitary bees while others are social. Such behavior may be widespread in bees and wasps, for it is almost undetectable with ordinary field techniques. These findings require the reevaluation of previous studies of sweat bee life cycles and of theories and models of the evolution of primitive insect societies.

Journal Article↗

Hormone responses to social stress in abstinent alcohol-dependent subjects and social drinkers with no history of alcohol dependence.

BACKGROUND: Previous studies have described blunted stress hormone responses after pharmacological activation of the hypothalamic-pituitary-adrenal (HPA) axis in sober alcoholics. The aim of the present study was to compare ACTH, cortisol, and prolactin responses to a psychological stressor in abstinent alcohol-dependent subjects matched to healthy control subjects. METHODS: Individuals who met DSM-IV diagnostic criteria for a history of alcohol dependence but not for other axis I disorders were included in the study (n = 18; mean duration of abstinence +/- SEM, 3.5 +/- 5.7 years). Social drinkers (n = 23) served as control subjects. The sober alcohol-dependent and control subjects were matched for demographic measures including levels of stress symptoms. All subjects underwent the Trier Social Stress Test (TSST), a laboratory-based psychological stressor. Prestress and poststress plasma ACTH, cortisol, and prolactin levels, as well as a self-report measure of anxiety (State-Trait Anxiety Inventory), were obtained. RESULTS: Nondepressed, abstinent alcoholics and control subjects did not differ with regard to age, racial composition, or baseline or poststress ratings of anxiety. Whereas ACTH and cortisol levels increased in response to the TSST, prolactin levels did not. Stress hormone response curves for the three hormones did not differ between the alcoholics and control subjects. CONCLUSIONS: When matched for levels of stress, a laboratory-based psychological stress test did not induce differential hormone response curves for abstinent alcoholics and control subjects.

Adrenocorticotropic Hormone↗

Stress-buffering or stress-exacerbation? Social support and social undermining as moderators of the relationship between perceived stress and depressive symptoms among married people.

This prospective panel study examined social support and social undermining from the spouse as moderators of the relationship between perceived stress and depressive symptoms. Participants were 181 married people who completed questionnaires at two points in time. The interval between time 1 (T1) and time 2 (T2) was approximately 6 weeks. Multiple regression analysis showed that T1 perceived stress and T1 spouse undermining, but not T1 spouse support, predicted increases in depressive symptoms from T1 to T2. T1 spouse undermining, but not T1 spouse support, moderated the association between T1 perceived stress and T2 depressive symptoms. These findings supported a stress-exacerbation hypothesis for the effect of spouse undermining on the stress process. Discussion focuses on possible mechanisms for the stress-exacerbation effect.

Journal Article↗

Sex differences in aggression: social representation and social roles.

Previous research suggests that men hold an instrumental social representation of aggression in which aggression is viewed as a functional interpersonal act aimed at imposing control over other people while women view aggression in expressive terms as a breakdown of self-control over anger. The present study examines the relative contribution of gendered personality differences (communality-agency) and occupational role in accounting for these differences. Men and women in the armed forces and nursing profession completed the Personal Attributes Questionnaire (PAQ: Spence & Helmreich, 1976) together with a psychometric measure of their tendency to view aggression as expressive rather than instrumental (Expagg: Campbell, Muncer & Coyle, 1992). The results indicate that occupational role and sex are both important correlates of individuals' representations of aggression. Though agency showed a significant negative zero-order correlation with expressive aggression, the impact of gendered personality traits was diminished when occupation and sex were taken into account. The data strongly support social role theory's emphasis upon contemporaneous occupational factors in explaining sex differences in the understanding of aggression but are less supportive of the role of masculine and feminine personality traits.

Aggression↗

The social predictors of adolescent alcohol misuse: a test of the social development model.

OBJECTIVE: This study was conducted to investigate the ability of the social development model (SDM) to predict alcohol misuse at age 16 and to investigate the ability of the SDM to mediate the effects of alcohol use at age 14 on alcohol misuse at age 16. METHOD: The sample of 807 (411 males) is from the longitudinal panel of the Seattle Social Development Project which, in 1985, surveyed all consenting fifth-grade students from 18 elementary schools serving high-crime neighborhoods in Seattle, Washington. Alcohol use was measured at age 14, predictors of alcohol misuse were measured at age 15 and alcohol misuse was measured at age 16. Structural equation modeling was used to examine the fit of the model to the data. RESULTS: All factor loadings were highly significant and the measurement model achieved a good fit with the data (Comparative Fit Index [CFI] = 0.93). A second-order structural model fit the data well (CFI = 0.91) and also explained 45% of the variance in alcohol misuse at age 16. The SDM partially and significantly mediated the direct effect of age-14 alcohol use on age-16 alcohol misuse. CONCLUSIONS: The risk and protective processes specified by the SDM serve as potential targets for the prevention or reduction of adolescent alcohol misuse.

Adolescent↗

[Barriers and opportunities for social participation in health: the main social actors' perceptions].

OBJECTIVE: Analysing barriers to and opportunities for user involvement as perceived by the social actors involved in implementing Colombian policy regarding social participation in health. METHODS: An exploratory qualitative study was carried out in the Colombian towns of Tuluá and Palmira between 2000 and 2001. There were 10 focus groups having 260 users and leaders. Semi-structured individual interviews were given to health personnel (36) and policy-makers (3). Narrative content, mixed categories and data segmentation by informants and topics were then analysed. RESULTS: Users and leaders considered their own lack of knowledge, apathy and fear of revenge as barriers for participation. However, there were institutional factors such as lack of institutional transparency, limited receptiveness and responsiveness regarding participation. These opinions were shared by policy-makers. Most health personnel identified users' knowledge and attitudes as barriers for participation; few mentioned any institutional barriers such as the behaviour of personnel, institutional opacity and the lack of resources for fostering work in the community. Opportunities for participation were described in terms of suitable and possible scenarios. Users perceived their great ability to achieve change through their direct participation appeared to them as presenting an important opportunity. CONCLUSIONS: Users' and leaders' perceptions of the current barriers and opportunities seemed to show that they are critical of their own reality and constitute important potential actors for becoming key interlocutors with institutions and the state. A similar attitude would be necessary on the part of institutional actors to build a real and permanent participatory culture.

Administrative Personnel↗

[Linking behavior in a social dilemma to outcome in another exchange: an experimental study of social dilemma resolution].

Recent studies have shown that a social dilemma (SD) may be resolved when people base their behavior in it on the outcome in another exchange domain (e.g., Milinski, Semmann, & Krambeck, 2002). Since people often engage simultaneously in different social exchanges with the same partner, such behavioral linkage, making behavior contingent upon outcome, across different exchange domains may provide an ecologically feasible solution to a SD. In this study, a further analysis of the theoretical statement concerning the positive effect of behavioral linkage was made, and it was argued that such linkage would resolve a SD, since another exchange relationship could provide a means to administer selective incentives. An experiment with 120 participants was conducted to test the hypotheses that people would adjust their behavior in an iterated prisoner's dilemma game depending on their partner's behavior and outcome in another SD, and such behavioral linkage would promote cooperation in the SD. Results of the experiment supported the hypotheses.

Female↗

Evaluation of the effect of co-financing on collaboration between health care, social services and social insurance in Sweden.

In this paper, we present an ongoing research project aimed to determine the impact of co-financing on collaboration around patients with musculoskeletal disorders. A trial legislation that allows the social insurance, social services and health care services to unite in co-financing under joint political steering has been tested in different areas in Sweden. In a series of studies, we compare collaboration processes and health outcome for patients with musculoskeletal disorders between health centres with co-financing projects and control health centres without co-financing projects. In this paper the studies are described and some preliminary results are discussed.

Journal Article↗

Additional federal allotments to states for social services expenditures pursuant to the Title XX-Block Grants to States for Social Services--Office of Human Development Services, HHS.

Section 2003 of the Social Security Act, as amended, authorizes $2.45 billion for allocation to the States for Social Services Block Grants--Fiscal Year 1983. Public Law 98-8, enacted March 245, 1983, appropriates an additional $225 million for Fiscal Year 1983. This notice contains State allotments and explanations of how the allotments were determined; conditions for receipt of these funds and other information.

Financing, Government↗

Revised federal allotments to states for social services expenditures pursuant to the Title XX--Social Services Block Grant Act; promulgation for fiscal year 1983-HHS. Revised notification.

Public Law 97-248, enacted September 3, 1982, among other things, amended Sec. 1101(a) of the Social Security Act, as amended, (Act) to define the term State when used in Title XX to no longer include American Samoa and the Trust Territory of the Pacific Islands. The Federal allotments to States for social services under Section 2003 of the Act which were promulgated in Vol. 46, No. 229 of the Federal Register page 58186 on November 30, 1981, included American Samoa and the Trust Territory of the Pacific Islands. Accordingly, the promulgation contained in such document is rescinded and the promulgation, as revised, is set forth in this issuance.

Financing, Government↗

Revised federal allotments to states for social services expenditure pursuant to Title XX--Social Services Block Grant Act; promulgation for fiscal year 1985--HHS.

The FY 1985 Federal allotments of $2.6 billion to States for social services under Section 2003 of the Social Security Act (Act) which were published in the Federal Register on October 27, 1983 (48 FR 49697) were based upon the authorization set forth in Section 2003 of the Act at the time they were prepared. Pub. L. 98-135, enacted October 24, 1983, amended Section 2003 of the Act by increasing the authorization to $2.7 billion for Fiscal Year 1984 and each succeeding fiscal year. Accordingly, the initial promulgation is rescinded and the promulgation as revised is set forth in the table below. These allotments are contingent upon Congressional appropriations actions for the year. If the Congress enacts, and the President approves, an amount different from the authorization, the allotments will be adjusted proportionately.

Financing, Government↗

[New challenge for social activities in the Japanese Society of Child Neurology--establishment of Social Activity and Public Relations Committee: introductory remarks].

The Japanese Society of Child Neurology newly established Social Activity and Public Relations Committee for the purpose of flexible response to the social event publicity. The committee consists of more than 36 members and is divided into the following sub-committees: Sub-committee 1 is intended to support the management and care of patients with developmental disabilities from infancy to adolescence, Sub-committee 2 devoted to the acquisition of research grants and the communication of basic scientific research, and Sub-committee 3 to coordinate and support medical-educational relationship. These three sub-committees achieved many of their goals during their stated first year of existence.

Child↗

Social ecology of the workplace: contextual variables affecting social interactions of employees with and without mental retardation.

The social interaction patterns of employees with and without mental retardation across several different competitive employment sites were observed directly; narrative recording procedures were used. The data were analyzed to determine whether there were differences between the two groups of employees and the people involved in the interactions and the time period of the interaction and whether the interaction involved a social or task-related topic. The results were discussed in relation to their implications for integrating workers with mental retardation into settings with nonhandicapped workers.

Adult↗

The International Multicenter Clinical Trial Group on Moclobemide in Social Phobia. Moclobemide in social phobia. A double-blind, placebo-controlled clinical study.

The primary objectives of this large multicenter study (n = 578) were to determine the efficacy and safety of moclobemide, 300 or 600 mg per day, for the treatment of social phobia. A double-blind fixed-dose parallel group study was conducted to compare the two different doses of moclobemide to placebo. After a 1-week placebo run-in period, patients were randomly assigned to one of the three treatment groups to receive the test compound for a 12-week period. Assessments were performed at screen, on baseline and on weeks 1, 2, 3, 4, 6, 8, 10, and 12. There were consistent, reliable and clinically meaningful drug effects and indications of a dose-response relationship. Statistical analysis of the results at both weeks 8 and 12 showed that 600 mg of moclobemide was effective and statistically significantly superior to placebo. The 300 mg dose also showed better efficacy than placebo on all measures of efficacy, and about half of them were statistically significantly different from placebo. Moclobemide was well tolerated. Adverse events, except for insomnia, were neither dose-related nor were there significant drug-placebo differences. The results indicate that 600 mg of moclobemide per day given b.i.d. is effective in social phobia, reducing the symptoms and the impairment associated with the disorder. The compound is well tolerated and safe.

Adult↗