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191.
Placebo expectations can have a strong influence on physical and mental health outcomes. In prior research examining placebo expectation effects, participants have been assigned placebo treatments rather than being actively involved in selecting their treatment. In modern health care, however, individuals are often involved in health care decisions. We review relevant literature regarding choice and placebo expectation effects and conclude that exercising choice over a treatment should strengthen placebo effects. Data relevant to this hypothesis is reviewed. Next, we provide a framework for understanding the key variables involved in mediating and moderating the influence of treatment choice on placebo expectation effects. Finally, theoretical and practical issues revolving around treatment choice in the context of placebo effects are raised. 相似文献
192.
When a single perceptual object provides two different reasons for a particular decision (by containing two qualitatively different targets), detailed analyses of the response-time distributions have shown that the two different reasons are jointly responsible for the final decision. The question is whether this coactivation occurs because the two targets contained by the object were from separate dimensions (e.g., color and shape) or were parts of the same perceptual object. Early work argued in favor of dimensions, implying that the types of information being processed is critical, as opposed to their sources; more recent work has argued in favor of objects. Experiment 1 in the present paper corrected for a potential bias in the design of some recent studies and found additional evidence in favor of objects. Two additional experiments directly manipulated whether redundant targets would be perceived as parts of one or two perceptual objects (while holding all else constant) and produced the strongest evidence to date that coactivation requires that the redundant targets be parts of one object. This reverses the original conclusion and suggests that the sources of information are critical, as opposed to the types. Two specific versions of the object-based model are discussed. 相似文献
193.
194.
The ideology of sisterhood within the feminist movement suggests that feminists' and nonfeminists' same–sex friendships would differ profoundly. This assumption was tested by examining the friendships of 45 heterosexual nonfeminists, 43 heterosexual feminists, and 38 lesbian feminists from a large midwestern city. Participants ranged in age from 19 to 46. Using objective measures, differences were found between feminists and nonfeminists for some structural dimensions of friendship, including number of cross–generational friendships, degree of equality, and amount of privacy preferred with a best friend. Lesbian feminists preferred more privacy with their friends than nonfeminists, but rated their friends as lower on relationship quality and degree of equality than heterosexual feminists and nonfeminists. The three groups did not differ on the affective content of friendship, including liking, loving, satisfaction and commitment. However, feminists subjectively perceived their feminism as having contributed to both structural and affective changes in their friendships. 相似文献
195.
An experiment tested the effects of three sex variables on managerial career evaluations. The variables were sex of evaluator, sex of manager (evaluatee), and predominate sex of manager's subordinates. Each subject evaluated four managers, one in each possible combination of the last two independent variables, in an “in basket” format. All four situations included comparable managerial performance data. Subjects evaluated each manager in terms of size of a deserved salary increase, probable performance if promoted, promotability, and probability of attaining 5-year tenure. There were no differences in evaluations between male and female evaluators. Manager's sex and predominate subordinate sex frequently interacted. The interactions were interpreted as a sex-matching bias which can inappropriately benefit managers of opposite sex subordinates and hinder careers of managers with subordinates of their own sex. 相似文献
196.
The transfer of Crel contextual control (same,opposite, less than,more than) through equivalence relations 下载免费PDF全文
William F. Perez Roberta Kovac Yara C. Nico Daniel M. Caro Adriana P. Fidalgo Ila Linares João Henrique de Almeida Júlio C. de Rose 《Journal of the experimental analysis of behavior》2017,108(3):318-334
According to Relational Frame Theory (RFT) Crel denotes a contextual stimulus that controls a particular type of relational response (sameness, opposition, comparative, temporal, hierarchical etc.) in a given situation. Previous studies suggest that contextual functions may be indirectly acquired via transfer of function. The present study investigated the transfer of Crel contextual control through equivalence relations. Experiment 1 evaluated the transfer of Crel contextual functions for relational responses based on sameness and opposition. Experiment 2 extended these findings by evaluating transfer of function using comparative Crel stimuli. Both experiments followed a similar sequence of phases. First, abstract forms were established as Crel stimuli via multiple exemplar training (Phase 1). The contextual cues were then applied to establish arbitrary relations among nonsense words and to test derived relations (Phase 2). After that, equivalence relations involving the original Crel stimuli and other abstract forms were trained and tested (Phase 3). Transfer of function was evaluated by replacing the directly established Crel stimuli with their equivalent stimuli in the former experimental tasks (Phases 1 and 2). Results from both experiments suggest that Crel contextual control may be extended via equivalence relations, allowing other arbitrarily related stimuli to indirectly acquire Crel functions and regulate behavior by evoking appropriate relational responses in the presence of both previously known and novel stimuli. 相似文献
197.
Decision theory and game theory rest on a fundamental assumption that players seek to maximize their individual utilities, but in some interactive decisions it seems intuitively reasonable to aim to maximize the utility of the group of players as a whole. Such team reasoning requires collective preferences and a distinctive mode of reasoning from preferences to decisions. Findings from two experiments provide evidence for collective preferences and team reasoning. In lifelike vignettes (Experiment 1) and abstract games (Experiment 2) with certain structural properties, most players preferred team-reasoning strategies to strategies supporting unique Nash equilibria, although individually rational players should choose equilibrium strategies. These findings suggest that team reasoning predicts strategy choices more powerfully than orthodox game theory in some games. 相似文献
198.
Although authorship policies exist, researchers understand little about their impact on perceptions of authorship scenarios. Graduate students (N=277) at a large university read 1 of 3 vignettes about a graduate student-faculty collaboration. One half of the surveys included the American Psychological Association's statement on authorship. Participants rated (a) the ethics of the professor as first author and (b) the likelihood of a dissatisfied student reporting the authorship result, as well as the effectiveness and negative consequences of reporting. Work arrangements on the project had a consistent main effect. Also, an authorship policy impacted women's ratings of first authorship when the student contributed the idea for a project. For men, a policy impacted only ratings of the likelihood of reporting when a professor was first author on a student's dissertation. Apart from sex, no other demographic variables on participants were predictive. Discussion focuses on the policy's potential for making only some specific issues salient. 相似文献
199.
Natural/social kind essentialism is the view that natural kind categories, both living and non-living natural kinds, as well as social kinds (e.g., race, gender), are essentialized. On this view, artifactual kinds are not essentialized. Our view—teleological essentialism—is that a broad range of categories are essentialized in terms of teleology, including artifacts. Utilizing the same kinds of experiments typically used to provide evidence of essentialist thinking—involving superficial change (study 1), transformation of insides (study 2), and inferences about offspring (study 3)—we find support for the view that a broad range of categories—living natural kinds, non-living natural kinds, and artifactual kinds—are essentialized in terms of teleology. Study 4 tests a unique prediction of teleological essentialism and also provides evidence that people make inferences about purposes which in turn guide categorization judgments. 相似文献
200.