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1.
Transfusion ; 63(1): 163-170, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36310443

RESUMO

BACKGROUND: Fear is a recognized predictor of vasovagal reactions (VVRs) in blood donors. However, less is known about the role of other emotions, including positive emotions, that donors might experience. The aim of this study was to identify the emotions experienced in center that predict onsite VVRs, and to determine at what point during the donation appointment, the experience of these emotions is most influential. STUDY DESIGN AND METHODS: A sample of 442 first-time whole-blood donors (57.7% female; mean ± SD age 30.7 ± 11.7 years) completed a survey in the waiting area and before venepuncture in the donation chair to assess their current emotional experience. The survey data were matched with routinely-collected demographic, donation, and donor adverse event information. A generalized estimating equations model was used to identify emotions associated with the occurrence of a VVR. RESULTS: A total of 56 (12.7%) participants experienced a VVR. The occurrence of a VVR was significantly associated with lower love/closeness/trust (OR: 0.53, 95%CI: 0.34-0.82) and higher scared/fearful/afraid (OR: 1.96, 95%CI: 1.18-3.25) states. Significant interaction effects suggested that the effect of scared/fearful/afraid decreased while stressed/nervous/overwhelmed increased from the waiting area to before venepuncture on the likelihood of a VVR. DISCUSSION: To effectively reduce donor VVR risk, blood collection agencies need to address a broader range of emotions at different points during the donation process.


Assuntos
Doadores de Sangue , Síncope Vasovagal , Humanos , Feminino , Adulto Jovem , Adulto , Masculino , Flebotomia/efeitos adversos , Síncope Vasovagal/epidemiologia , Medo , Fatores de Risco
2.
Ann Behav Med ; 55(7): 686-692, 2021 06 28.
Artigo em Inglês | MEDLINE | ID: mdl-32945862

RESUMO

BACKGROUND: Despite recognition that blood donation is an affectively poignant process, many aspects of donors' emotional experiences and their consequences remain unexamined. PURPOSE: This study tracked the donor's experience of several positive and negative emotions live as they arose during the donation process and tracked the impact of that experience on donor return. METHODS: New whole blood donors (N = 414) reported their experience of 10 positive and 10 negative discrete emotions before, during, and after donation. Return behavior of these donors and a business-as-usual control group was tracked over the next 6 months. RESULTS: In total, 46.4% of participants and 43.2% of the control group returned to donate within 6 months. On the basis of established relevance to blood donation and statistical considerations, group-based latent trajectories of three emotions (joy, calm, and stress) were modeled over time, revealing five classes of emotion trajectories. A trajectory of low/increasing joy and calm and high/decreasing stress was associated with significantly lower probability of return (preturn = .28, 95% confidence interval [CI] = 0.20, 0.38) relative to all but one other trajectory group and the control group. A trajectory of medium-high/increasing joy, high calm, and low/decreasing stress was associated with a significantly greater probability of return (preturn = .59, 95% CI = 0.49, 0.69) relative to two other trajectory classes and the control group. CONCLUSIONS: By identifying blood donors' emotion trajectories over time and the impact of those trajectories on return behavior, this research paves the way for the development of effective emotion-focused interventions to boost retention.


Assuntos
Doadores de Sangue/psicologia , Emoções , Adulto , Doadores de Sangue/estatística & dados numéricos , Feminino , Felicidade , Humanos , Análise de Classes Latentes , Masculino , Angústia Psicológica , Fatores de Tempo
3.
Transfusion ; 60(9): 1998-2009, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32678484

RESUMO

Prior studies suggest that responding to online motivational questions increases blood donation intention. The present studies were designed to extend these findings by (a) exploring the impact of methodologic variations in the content and order of administration of specific questions on donation intention and (b) examining anticipated positive and negative emotional reactions as potential mediators. STUDY DESIGN AND METHODS: In the first study, 4709 respondents (51.2% female; mean ± SD age, 38.4 ± 12.1 years) were randomly assigned to one of four motivational questions or a no-question control. In the second study, 5291 respondents (52.7% female; mean ± SD age, 37.3 ± 11.9 years) were randomly assigned to one of six motivational questions or a no-question control. In both studies, the motivational questions were followed by measures of donation intention, anticipated warm glow, and anticipated regret. RESULTS: In Study 1, three of the four questions were associated with higher donation intentions, with anticipated warm glow being a potential partial mediator for two of the questions. In Study 2, five of the six questions were associated with higher donation intentions, with anticipated warm glow and anticipated regret being potential partial mediators for three of the questions. These effects were largely consistent among donors and nondonors. CONCLUSION: These studies expand our understanding of the association between particular motivational questions and donation intentions and provide preliminary support for the notion that specific questions may influence donation intention by increasing anticipated positive and negative emotional reactions to the thought of giving or not giving, respectively.


Assuntos
Doadores de Sangue/psicologia , Emoções , Intenção , Motivação , Inquéritos e Questionários , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
4.
Behav Brain Sci ; 39: e117, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-27562726

RESUMO

Given the highly social nature of the human emotion system, it is likely that it subserved the evolution of ultrasociality. We review how the experience and functions of human emotions enable social processes that promote ultrasociality (e.g., cooperation). We also point out that emotion may represent one route to redress one of the negative consequences of ultrasociality: ecosystem domination.


Assuntos
Emoções , Relações Interpessoais , Comportamento Social , Humanos
5.
Biologicals ; 42(2): 65-73, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24457196

RESUMO

Low back pain is amongst the top ten risk factors that contribute to disability, ranking higher than diabetes and mental health disease globally as a contributor to years lost to disability (YLD), and escalating as Western societies age. Abundant evidence suggests that intervertebral disc (IVD) damage is central to the origin of pain in the spine. IVD degeneration involves the progressive deterioration of the highly organized disc tissue extracellular matrix, losing its elasticity and hence its' cushioning ability for the spine. Cartilage derived morphogenetic protein-2 (CDMP2) is a small peptide morphogen. Naturally occurring mutations segregate with skeletal defects in IVD development. CDMP2 signalling influences chondrogenic tissue determination, retards osteogenic tissue development and is crucial to early dorso-ventral axis defining events in zebrafish and Xenopus laevis. The potential of biological treatments to offer cutting edge early intervention, tissue regeneration and to preserve spinal motion segments shows great promise. The unique qualities of CDMP2 in IVD tissue formation, delineating discal matrix from vertebral bone, may prove adaptable in therapeutic applications to early discal degeneration. Here we explore the prevalence and origin of backache, the biology of CDMP2 and its potential application as an early intervention to arrest the disc degeneration sequelae.


Assuntos
Proteínas Morfogenéticas Ósseas/farmacologia , Degeneração do Disco Intervertebral/tratamento farmacológico , Disco Intervertebral/efeitos dos fármacos , Regeneração/efeitos dos fármacos , Animais , Proteínas Morfogenéticas Ósseas/uso terapêutico , Humanos , Degeneração do Disco Intervertebral/fisiopatologia
6.
Transfus Med Hemother ; 41(4): 296-301, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25254025

RESUMO

Donors are the key to the core business of Blood Collection Agencies (BCAs). However, historically, they have not been a focus of research undertaken by these organizations. This model is now changing, with significant donor research groups established in a number of countries, including Australia. Donor research in the Australian Red Cross Blood Service (Blood Service) is concentrated in the Donor and Community Research (DCR) team. Cognizant of the complex and ever-changing landscape with regard to optimal donor management, the DCR team collaborates with academics located at universities around Australia to coordinate a broad program of research that addresses both short- and-long term challenges to the blood supply. This type of collaboration is not, however, without challenges. Two major collaborative programs of the Blood Service's research, focusing on i) the recruitment and retention of plasmapheresis donors and ii) the role of the emotion pride in donor motivation and return, are showcased to elucidate how the challenges of conducting collaborative BCA research can be met. In so doing, these and the other research programs described herein demonstrate how the Blood Service supports and contributes to research that not only revises operational procedures but also contributes to advances in basic science.

7.
Behav Brain Sci ; 37(2): 138-9, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24775124

RESUMO

Building upon Huang & Bargh's (H&B's) theory, we propose a complementary view that goal formation and selection are both supported by affect. We suggest that goals may form when affect "tags" discrete behaviors and their outcomes. Further, we propose that goal-associated affect may help guide selection between competing goals, for example, in the case of short-term and long-term goals.


Assuntos
Comportamento/fisiologia , Objetivos , Julgamento/fisiologia , Motivação/fisiologia , Feminino , Humanos
8.
Blood Transfus ; 22(2): 96-105, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37458716

RESUMO

BACKGROUND: Restrictions previously limiting the ability of men who have sex with men to donate blood are being eased in a number of nations worldwide. In the context of these changes, it is important to determine public perceptions of receiving a transfusion of blood donated by men who have sex with men. MATERIALS AND METHODS: In online surveys, 510 (Study 1) and 1,062 (Study 2) heterosexual participants reported attitudes, anxiety, disgust, and gratitude towards potentially receiving a transfusion of blood donated by a homosexual male donor and a heterosexual male donor. In Study 2, half of the participants were reminded of the safety testing carried out on donated blood samples. Negative attitudes, anxiety, disgust, and gratitude were compared between the two donors using t-tests and within-participants indirect effects analysis. RESULTS: Stronger negative attitudes, higher anxiety and disgust, and lower gratitude were reported in relation to a potential transfusion of blood donated by the homosexual male donor relative to the heterosexual male donor (|d|=0.26-0.46). This was the case even when participants were reminded of the safety testing completed on donated blood samples in Study 2. In both studies, the effect of donor sexual orientation on attitudes was explained via heightened anxiety and disgust and attenuated gratitude (b=0.05-0.30). DISCUSSION: Considering receiving a transfusion of blood donated by a homosexual male donor elicits more negative attitudes, anxiety and disgust, and less positive emotion, relative to blood donated by a heterosexual male donor. These attitudes and emotional reactions are not shifted by a reminder of the safety testing carried out on donated blood samples. In the context of changing restrictions on blood donation by men who have sex with men, these findings highlight a challenge to shift public perception to embrace this cohort of donors.


Assuntos
Homossexualidade Masculina , Minorias Sexuais e de Gênero , Humanos , Masculino , Feminino , Homossexualidade Masculina/psicologia , Comportamento Sexual , Transfusão de Sangue , Doadores de Sangue/psicologia , Inquéritos e Questionários
9.
PLoS One ; 19(5): e0303510, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38820524

RESUMO

Individuals ostracize others for myriad reasons, yet the influence of those reasons on the psychological experience of ostracizing is yet unknown. Two studies aimed to determine the emotional and behavioral sequelae of ostracizing for different motives, directly comparing punitive to defensive motives. We focused our examination on a suite of emotions expected to arise as a function of (1) the situations that give rise to ostracizing for punitive and defensive reasons (anger, fear, anxiety, and sadness) and (2) the act of ostracizing itself (i.e., pride and guilt). The research employed a novel paradigm to induce the experience of ostracizing for defensive or punitive motives. Study 1 (N = 372) investigated sources' experienced emotion as a function of motive. Study 2 (N = 743) expanded consideration to behavioral intentions, including intentions to continue ostracizing and to recruit others to join in ostracizing the target. Across both studies and supported by an internal meta-analysis, ostracizing for defensive reasons was associated with higher levels of guilt, fear, and anxiety, and lower levels of anger, compared to ostracizing for punitive reasons. Neither sadness nor positive emotion (pride or happiness) differed significantly according to motive in either study. Moreover, guilt and anger mediated the impact of motive on intentions to continue ostracizing and recruit others to join them in ostracizing. To the extent that punitive sources experienced anger relative to defensive sources, they expressed greater intentions to continue ostracizing the target and to recruit others to join in ostracizing the target. To the extent that defensive sources experienced guilt relative to punitive sources, they reported reduced intentions to continue ostracizing the target. Findings add to a growing literature on ostracism sources, and highlight the mediating role of sources' emotion in guiding future actions.


Assuntos
Emoções , Motivação , Humanos , Feminino , Masculino , Adulto , Medo/psicologia , Ansiedade/psicologia , Adulto Jovem , Pessoa de Meia-Idade , Culpa
10.
Sci Rep ; 14(1): 10334, 2024 05 06.
Artigo em Inglês | MEDLINE | ID: mdl-38710774

RESUMO

Effective interventions that support blood donor retention are needed. Yet, integrating an intervention into the time-pressed and operationally sensitive context of a blood donation center requires justification for disruptions to an optimized process. This research provides evidence that virtual reality (VR) paradigms can serve as a research environment in which interventions can be tested prior to being delivered in blood donation centers. Study 1 (N = 48) demonstrated that 360°-video VR blood donation environments elicit a similar profile of emotional experience to a live donor center. Presence and immersion were high, and cybersickness symptoms low. Study 2 (N = 134) was an experiment deploying the 360°-video VR environments to test the impact of an intervention on emotional experience and intentions to donate. Participants in the intervention condition who engaged in a suite of tasks drawn from the process model of emotion regulation (including attentional deployment, positive reappraisal, and response modulation) reported more positive emotion than participants in a control condition, which in turn increased intentions to donate blood. By showing the promise for benefitting donor experience via a relatively low-cost and low-resource methodology, this research supports the use of VR paradigms to trial interventions prior to deployment in operationally-context field settings.


Assuntos
Doadores de Sangue , Realidade Virtual , Humanos , Doadores de Sangue/psicologia , Masculino , Feminino , Adulto , Adulto Jovem , Emoções/fisiologia , Intenção , Pessoa de Meia-Idade , Adolescente , Doação de Sangue
11.
Nat Hum Behav ; 7(11): 1917-1932, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37710031

RESUMO

Explaining why someone repeats high-cost cooperation towards non-reciprocating strangers is difficult. Warm glow offers an explanation. We argue that warm glow, as a mechanism to sustain long-term cooperation, cools off over time but can be warmed up with a simple intervention message. We tested our predictions in the context of repeat voluntary blood donation (high-cost helping of a non-reciprocating stranger) across 6 studies: a field-based experiment (n = 5,821) comparing warm-glow and impure-altruism messages; an implementation study comparing a 3-yr pre-implementation period among all first-time donors in Australia (N = 270,353) with a 2-yr post-implementation period (N = 170, 317); and 4 studies (n = 716, 1,124, 932, 1,592) exploring mechanisms. We show that there are relatively warm and cool cooperators, not cooling cooperators. Cooperation among cool cooperators is enhanced by a warm-glow-plus-identity message. Furthermore, the behavioural facilitation of future cooperation, by booking an appointment, is associated with being a warm cooperator. Societal implications are discussed.


Assuntos
Altruísmo , Humanos , Austrália
12.
Sci Rep ; 12(1): 18978, 2022 11 08.
Artigo em Inglês | MEDLINE | ID: mdl-36348009

RESUMO

The last decade has witnessed intense interest in how people perceive the minds of other entities (humans, non-human animals, and non-living objects and forces) and how this perception impacts behavior. Despite the attention paid to the topic, the psychological structure of mind perception-that is, the underlying properties that account for variance across judgements of entities-is not clear and extant reports conflict in terms of how to understand the structure. In the present research, we evaluated the psychological structure of mind perception by having participants evaluate a wide array of human, non-human animal, and non-animal entities. Using an entirely within-participants design, varied measurement approaches, and data-driven analyses, four studies demonstrated that mind perception is best conceptualized along a single dimension.


Assuntos
Teoria da Mente , Animais , Humanos , Julgamento , Atenção , Percepção
13.
Neurosci Biobehav Rev ; 131: 941-952, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34509514

RESUMO

What does it mean to be "well" and how might such a state be cultivated? When we speak of wellbeing, it is of ourselves and fellow humans. When it comes to nonhuman animals, consideration turns to welfare. My aim herein is to suggest that theoretical approaches to human wellbeing might be beneficially applied to consideration of animal welfare, and in so doing, introduce new lines of inquiry and practice. I will review current approaches to human wellbeing, adopting a triarchic structure that delineates hedonic wellbeing, eudaimonic wellbeing, and social wellbeing. For each, I present a conceptual definition and a review of how researchers have endeavored to measure the construct. Drawing these three domains of research together, I highlight how these traditionally anthropocentric lines of inquiry might be extended to the question of animal welfare - namely by considering hedonic welfare, eudaimonic welfare, and social welfare as potentially distinguishable and complementary components of the broader construct of animal welfare.


Assuntos
Bem-Estar do Animal , Animais , Humanos
14.
J Cell Biochem ; 109(2): 406-16, 2010 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-19950204

RESUMO

This study addresses the role of bone morphogenetic protein-7 (BMP-7) in chondrogenic and osteogenic differentiation of human bone marrow multipotent mesenchymal stromal cells (BM MSCs) in vitro. BM MSCs were expanded and differentiated in the presence or absence of BMP-7 in monolayer and three-dimensional cultures. After 3 days of stimulation, BMP-7 significantly inhibited MSC growth in expansion cultures. When supplemented in commonly used induction media for 7-21 days, BMP-7 facilitated both chondrogenic and osteogenic differentiation of MSCs. This was evident by specific gene and protein expression analyses using real-time PCR, Western blot, histological, and immunohistochemical staining. BMP-7 supplementation appeared to enhance upregulation of lineage-specific markers, such as type II and type IX collagens (COL2A1, COL9A1) in chondrogenic and secreted phosphoprotein 1 (SPP1), osteocalcin (BGLAP), and osterix (SP7) in osteogenic differentiation. BMP-7 in the presence of TGF-beta3 induced superior chondrocytic proteoglycan accumulation, type II collagen, and SOX9 protein expression in alginate and pellet cultures compared to either factor alone. BMP-7 increased alkaline phosphatase activity and dose-dependently accelerated calcium mineralization of osteogenic differentiated MSCs. The potential of BMP-7 to promote adipogenesis of MSCs was restricted under osteogenic conditions, despite upregulation of adipocyte gene expression. These data suggest that BMP-7 is not a singular lineage determinant, rather it promotes both chondrogenic and osteogenic differentiation of MSCs by co-ordinating with initial lineage-specific signals to accelerate cell fate determination. BMP-7 may be a useful enhancer of in vitro differentiation of BM MSCs for cell-based tissue repair.


Assuntos
Adipogenia/fisiologia , Proteína Morfogenética Óssea 7/metabolismo , Condrogênese/fisiologia , Células-Tronco Mesenquimais/citologia , Osteogênese/fisiologia , Adipogenia/efeitos dos fármacos , Alginatos/farmacologia , Fosfatase Alcalina/metabolismo , Antígenos de Diferenciação/fisiologia , Células da Medula Óssea/citologia , Células da Medula Óssea/fisiologia , Proteína Morfogenética Óssea 7/farmacologia , Calcificação Fisiológica/fisiologia , Técnicas de Cultura de Células , Linhagem da Célula , Células Cultivadas , Condrogênese/efeitos dos fármacos , Ácido Glucurônico/farmacologia , Ácidos Hexurônicos/farmacologia , Humanos , Células-Tronco Mesenquimais/efeitos dos fármacos , Células-Tronco Mesenquimais/fisiologia , Células-Tronco Multipotentes/citologia , Células-Tronco Multipotentes/fisiologia , Osteogênese/efeitos dos fármacos , Proteoglicanas/biossíntese , Fatores de Transcrição SOX9/fisiologia , Células Estromais/citologia , Células Estromais/fisiologia , Fator de Crescimento Transformador beta3/farmacologia
15.
Neurosci Biobehav Rev ; 115: 299-307, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32497569

RESUMO

Anthropomorphism is the attribution of human-like capacities and traits to non-human entities. Anthropomorphism is ubiquitous in everyday life and in scientific domains, operating both implicitly and explicitly as a function of the human lens through which we view the world. A rich history of work in psychology, animal behavior, cognitive science, and philosophy has highlighted the negative and, to a lesser degree, the positive implications of anthropomorphism. In this article, we aim to provide a nuanced perspective of how anthropomorphism impacts the work of comparative affective science. Specifically, we discuss three domains of empirical inquiry in which lessons can be drawn about the benefits and pitfalls of anthropomorphism: responses to death, inequity aversion, and prosocial behavior. On balance, we advocate a mindful approach to anthropomorphizing in comparative affective science, and comparative science more generally.


Assuntos
Atenção Plena , Percepção Social , Animais
16.
Emotion ; 20(6): 993-1004, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31192659

RESUMO

Over the past century, great debate has ensued regarding the fundamental properties of emotions. The idea that 2 properties-valence and arousal-are critical for emotion and psychologically irreducible has had substantial staying power in the literature. In the present report, we examine whether a third dimension-reflecting the social properties of emotion-might arise if stimuli high in that dimension (i.e., "theoretically social emotions") were included in the task and, or, if social information was primed. We used a similarity-rating task to evaluate whether a dimension representing the "socialness" of emotion-the extent to which emotions are associated with social contexts-might arise as the result of inclusion of emotion words that are theorized to represent "social emotions." In Study 1, we assessed the dimensional structure of 41 different emotion terms (of which 41% were "social emotions") based on pairwise similarity ratings of a subset of the emotion terms. In Study 2, we tested whether priming social information before and during the similarity rating task would shift the emergent dimensional structure of emotion words. Results of multidimensional scaling across both studies indicated that the structure of emotion is best described by 2 dimensions-valence and arousal-and was not influenced by the priming of social information. Contrary to predictions, evidence did not emerge for a third dimension corresponding to socialness, nor any other property. (PsycInfo Database Record (c) 2020 APA, all rights reserved).


Assuntos
Nível de Alerta/fisiologia , Emoções/fisiologia , Adulto , Feminino , Humanos , Masculino
17.
Psychol Sci ; 20(3): 284-8, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19207690

RESUMO

This experiment examined the ability of pride to serve as an adaptive emotion within the context of social interaction. After an in vivo induction of pride or a neutral state, participants engaged in a group problem-solving task. In contrast to a conventional view that pride is often associated with negative interpersonal outcomes, results confirmed that proud individuals not only took on a dominant role within the group problem-solving task, but also were perceived as the most likeable interaction partners. These findings suggest that pride, when representing an appropriate response to actual performance (as opposed to overgeneralized hubris), constitutes a functional social emotion with important implications for leadership and the building of social capital.


Assuntos
Adaptação Psicológica , Afeto , Autoimagem , Comportamento Social , Feminino , Humanos , Masculino , Predomínio Social , Adulto Jovem
18.
Emotion ; 9(4): 585-91, 2009 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-19653784

RESUMO

Three experiments examined the impact of incidental emotions on implicit intergroup evaluations. Experiment 1 demonstrated that for unknown social groups, two negative emotions that are broadly applicable to intergroup conflict (anger and disgust) both created implicit bias where none had existed before. However, for known groups about which perceivers had prior knowledge, emotions increased implicit prejudice only if the induced emotion was applicable to the outgroup stereotype. Disgust increased bias against disgust-relevant groups (e.g., homosexuals) but anger did not (Experiment 2); anger increased bias against anger-relevant groups (e.g., Arabs) but disgust did not (Experiment 3). Consistent with functional theories of emotion, these findings suggest that negative intergroup emotions signal specific types of threat. If the emotion-specific threat is applicable to prior expectations of a group, the emotion ratchets up implicit prejudice toward that group. However, if the emotion-specific threat is not applicable to the target group, evaluations remain unchanged.


Assuntos
Emoções , Preconceito , Identificação Social , Ira , Árabes/psicologia , Nível de Alerta , Associação , Conflito Psicológico , Feminino , Homossexualidade/psicologia , Humanos , Masculino , Enquadramento Psicológico
19.
J Pers Soc Psychol ; 94(6): 1007-17, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18505314

RESUMO

Perseverance toward goals that carry short-term costs is an important component of adaptive functioning. The present experiments examine the role that the emotion pride may play in mediating such perseverance. Across 2 studies, pride led to greater perseverance on an effortful and hedonically negative task believed to be related to the initial source of pride. In addition, the causal efficacy of pride was further demonstrated through dissociating its effects from related alternative mechanisms. Study 1 differentiated the effects of pride from self-efficacy. Study 2 differentiated the effects of pride from general positive affect. Taken together, these findings provide support for the proposed motivational function of pride in which this emotion serves as an incentive to persevere on a task despite initial costs.


Assuntos
Aspirações Psicológicas , Atitude , Motivação , Autoimagem , Autoeficácia , Adulto , Feminino , Humanos , Masculino
20.
Cell Tissue Bank ; 9(4): 289-98, 2008 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-18431690

RESUMO

The increased use of allograft tissue for musculoskeletal repair has brought more focus to the safety of allogenic tissue and the efficacy of various sterilization techniques. Gamma irradiation is an effective method for providing terminal sterilization to biological tissue, but it is also reported to have deleterious effects on tissue mechanics in a dose-dependent manner. At irradiation ranges up to 25 kGy, a clear relationship between mechanical strength and dose has yet to be established. The aim of this study was to investigate the mechanical properties of bone and soft tissue allografts, irradiated on dry ice at a low absorbed dose (18.3-21.8 kGy) and a moderate absorbed dose (24.0-28.5 kGy), using conventional compressive and tensile testing, respectively. Bone grafts consisted of Cloward dowels and iliac crest wedges, while soft tissue grafts consisted of patellar tendons, anterior tibialis tendons, semitendinosus tendons, and fascia lata. There were no statistical differences in mechanical strength or modulus of elasticity for any graft irradiated at a low absorbed dose, compared to control groups. Also, bone allografts and two soft tissue allografts (anterior tibialis and semitendinosus tendon) that were irradiated at a moderate dose demonstrated similar strength and modulus of elasticity values to control groups. The results of this study support the use of low dose and moderate dose gamma irradiation of bone grafts. For soft tissue grafts, the results support the use of low dose irradiation.


Assuntos
Transplante Ósseo , Osso e Ossos/fisiologia , Osso e Ossos/efeitos da radiação , Raios gama , Adulto , Fenômenos Biomecânicos/efeitos da radiação , Força Compressiva/efeitos da radiação , Relação Dose-Resposta à Radiação , Fascia Lata/fisiologia , Fascia Lata/efeitos da radiação , Humanos , Pessoa de Meia-Idade , Especificidade de Órgãos/efeitos da radiação , Patela/fisiologia , Patela/efeitos da radiação , Tendões/fisiologia , Tendões/efeitos da radiação , Resistência à Tração/efeitos da radiação , Transplante Homólogo
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