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Four experiments using a yes-no recognition task with snapshots examined (1) the effect of presenting not one but two items simultaneously, either both targets or both distractors, for a single judgment at a retention test trial; (2) the rate of forgetting; (3) the interaction between retention interval and the exposure duration at acquisition; (4) acquisition as a function of the number of times a picture was presented. In each case performance was assessed by calculating the discriminability index d'. The results supported the hypotheses that trace strength is lognormally distributed, that forgetting is exponential, and that in acquisition trace strength is a linear function of the number of presentations.  相似文献   

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To remain competitive in the global economy, the United States (and other countries) is trying to broaden participation in science, technology, engineering, and mathematics (STEM) by graduating an additional 1 million people in STEM fields by 2018. Although communion (working with, helping, and caring for others) is a basic human need, STEM careers are often (mis)perceived as being uncommunal. Across three naturalistic studies, we found greater support for the communal affordance hypothesis, that perceiving STEM careers as affording greater communion is associated with greater STEM career interest, than two alternative hypotheses derived from goal congruity theory. Importantly, these findings held regardless of major (Study 1), college enrollment (Study 2), and gender (Studies 1–3). For undergraduate research assistants, mid‐semester beliefs that STEM affords communion predicted end of the semester STEM motivation (Study 3). Our data highlight the importance of educational and workplace motivational interventions targeting communal affordances beliefs about STEM.  相似文献   

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Communal predators may often need to make especially intricate foraging decisions, as a predator's success may depend on the actions of its neighbours. Here,we consider the decisions made by Portia africana, a jumping spider (Salticidae) that preys on other spiders, including Oecobius amboseli (Oecobiidae), a small prey spider that lives under small sheets of silk (nests) on the walls of buildings. P. africana juveniles settle near oecobiid nests and then ambush oecobiids as they leave or enter the nest. Two or more P. africana juveniles sometimes settle at the same nest and, when an oecobiid is captured, the P. africana juveniles may share the meal. We investigated the joining decisions made by na?ve P. africana juveniles. Experiments were based on using lures (dead spiders positioned in lifelike posture) arranged in a series of 17 different scenes defined by the presence/absence of a nest, the lure types present and the configuration of the lures and the nest. Our findings imply that P. africana juveniles make remarkably precise predatory decisions, with the variables that matter including whether a nest is present, the identity of spiders inside and outside a nest and how spiders are positioned relative to each other and the nest.  相似文献   

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There is a growing consensus that materials become stronger in small volumes and in the presence of large strain gradients. It has not been clear whether this is due to increased resistance to the motion of dislocations, fewer dislocations, or increased difficulty of multiplying dislocations in these situations. A classic experiment by Stölken and Evans (J.S. Stölken and A.G. Evans, Acta metall. 46 5109 (1998)) showed that thin nickel foils under bending display increased strengthening at large plastic strain values and, correspondingly, large plastic strain gradients. We have adapted their technique to small strains, and report preliminary data for the stress–strain curves of thin nickel foils through the elastic–plastic transition. These data show unambiguously that the yield strength is greater in the thinner foils. The strengthening is additive to the Hall–Petch effect, and is consistent with a size effect at the onset of plastic deformation.  相似文献   

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Keeping track of needs in communal and exchange relationships   总被引:1,自引:0,他引:1  
Keeping track of needs in communal and exchange relationships was investigated in two experiments. In both, subjects could check to see if another person needed help. The first experiment tested the hypotheses that When there is no opportunity for the other to reciprocate in kind, keeping track of the other's needs will be greater if the person desires a communal relationship with the other than if the person desires an exchange relationship with the other. If the person desires an exchange relationship with the other, keeping track of the other's needs will be greater when an opportunity for the other to reciprocate in kind exists than when it does not. If a communal relationship is desired, the existence of an opportunity for the other to reciprocate in kind will not influence keeping track of the other's needs. The results of the first experiment supported all three hypotheses. The second experiment tested and found support for the hypothesis that even when nothing can be done to help the other, keeping track of the other's needs will be greater if a communal relationship is desired with the other than if an exchange relationship is desired.  相似文献   

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This research was designed to investigate Paulhus' communion management (CM) and self‐deceptive enhancement (SDE), socially desirable responding (SDR) scales as measures of general SDR, communal bias and agentic bias. The CM and SDE scales, as well as the Schwartz values survey (SVS), were administered to four samples drawn from different cultures and subcultures (N = 900). Participants completed the questionnaires in ‘honest’ and ‘fake good’ conditions. Although conceptions of which values were desirable varied strongly between samples and instructional sets, the CM scale was consistently related to general SDR and to communal bias. In contrast, the SDE scale was only related to general SDR. Contrary to expectations, neither scale could identify participants who ‘faked good’ under normal instructions. Copyright © 2007 John Wiley & Sons, Ltd.  相似文献   

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Agency is the meta-concept associated with self-advancement in social hierarchies; communion is the partner concept associated with maintenance of positive relationships. Despite the wealth of data documenting the conceptual utility of agency and communion (A & C) as superordinate metaconcepts, no direct measures of global A & C value dimensions are currently available. The first part of this article presents structural analyses of data from 4 diverse data sets (3 archival and 1 new): Each included a broad inventory of values or life goals. All 4 data sets revealed higher order A & C dimensions that were either apparent or implicit. The second part details the development of the ACV, a 24-item questionnaire measuring global A and C values, and documents its psychometric properties. Four studies support their joint construct validity by positioning the value measures within a nomological network of interpersonal traits, self-favorability biases, ideology dimensions, gender, socio-sexuality, and religious attitudes. Potential applications of the new instrument are discussed.  相似文献   

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Phenomenology and the Cognitive Sciences - The internet provides us with a multitude of ways of interacting with one another. In discussions about how technological innovations impact and shape our...  相似文献   

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Despite our intuition that representative expert judgments are highly nonlinear, previous studies have shown only little, if any, nonlinearity in such judgments. The current study presents a method for assessing nonlinearity in judgment that is based on estimating communal nonlinearity—the systematic nonlinearity shared by the community of judges. The article also examines the predictive accuracy of communal nonlinearity, and compares it with the corresponding linear accuracy.  相似文献   

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ABSTRACT

Sex is a crucial factor that impacts the quality and stability of relationships, yet many couples report recurrent sexual issues – such as discrepancies in their desired sexual frequency or levels of sexual desire – that detract from their relationship quality. This article describes how applying the theory of communal motivation from relationship science to the sexual domain of relationships can shed light onto understanding how couples can maintain desire over time, remain satisfied in the face of conflicting sexual interests, and decline one another’s sexual advances in ways that protect their relationship. We integrate a decade of research on communal motivation, sexual rejection, and responses to sexual rejection to provide a better, and more holistic, understanding of how partners can successfully balance their sexual needs to ultimately reap the powerful rewards of a fulfiling sexual connection.  相似文献   

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The present research examined the moderating influence of situations involving friends and romantic partners on gender differences in interpersonal behaviors reflecting agency and communion. Behavior was studied in three situations varying in social role and dyadic gender composition: same‐sex friendships, opposite‐sex friendships, and romantic relationships. To obtain multiple events representing each relationship situation, participants recorded information about their interpersonal interactions during a 20‐day period using an event‐contingent recording procedure. Results indicated gender differences consistent with gender stereotypes when men and women were interacting with same‐sex friends; men with men were more dominant and women with women were more agreeable. In interactions with romantic partners, gender differences in communal behavior were opposite to gender stereotypes; women were less agreeable and more quarrelsome than men with their romantic partners. Results are considered in reference to developmental socialization theory, social role theory, and studies of gender differences in marital relationships.  相似文献   

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This research tested a social projection model of perceived partner responsiveness to needs. According to this model, people project their own care and supportiveness for a partner onto their perceptions of their partner's caring and supportiveness. In 2 dyadic marriage studies, participants' self-reported responsiveness to the needs of a spouse predicted perceptions of the spouse's responsiveness to the self more strongly than did the spouse's self-reported responsiveness. These projected perceptions of responsiveness, in turn, appeared to promote perceivers' relationship satisfaction. These effects were independent of individual differences in attachment, self-esteem, depression, and communal orientation. A daily-diary component suggested that people projected their own chronic responsiveness as well as their daily enacted support onto perceptions of the specific benefits received from their spouses. A 3rd study found that experimentally manipulated feelings of difficulty in recalling examples of own support provision reduced perceptions of partner responsiveness. Results suggest that projection of own responsiveness is an important determinant of perceived social support and is a means by which caring perceivers maintain satisfying and subjectively communal relationships.  相似文献   

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The effects of communal motivation on reactions to relationship partners' expressed anger were examined. In Study 1, married couples reported on the communal strength of their marriage, their expressions of anger to their spouse, and relationship satisfaction. In Study 2, college students reported on the communal strength of their best friendships, those friends' expressions of anger, and their evaluations of and provision of support to those friends. In Study 3, communal motivation toward a stranger who expressed mild anger was manipulated and evaluation of that stranger was measured. In all three studies, low communal motivation was associated with more negative evaluations of angry partners, lower relationship satisfaction, and, in Study 2, lower support provision. In contrast, when communal motivation was high, these decreases either did not occur (Studies 1 and 3) or were diminished (Study 2), and in Study 2, partners' anger was associated with increased provision of social support.  相似文献   

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We present a Double Perspective Model (DPM) explaining why agency (competence) and communion (warmth) constitute two basic content dimensions of social cognition. Every social action involves two perspectives: of the agent (a person who performs an action) and of the recipient (a person at whom the action is directed). Immediate cognitive goals of the agent and recipient differ, which results in heightened accessibility and weight of content referring either to agency (from the agent's perspective) or to communion (from the recipient's perspective). DPM explains why evaluations of other persons are dominated by communal over agentic considerations and allows a novel hypothesis that self‐esteem is dominated by agentic over communal information. We present several studies supporting this hypothesis. Copyright © 2011 John Wiley & Sons, Ltd.  相似文献   

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