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91.
Predators everywhere impose strong selection pressures on the morphology and behavior of their prey, but the resulting antipredator adaptations vary greatly among species. Studies of adaptive coloration in prey species have generally focused on cryptic or aposematic prey, with little consideration of color patterns in palatable mobile prey. Complex color patterns have been proposed to decrease the ability of visual predators to capture moving prey (motion dazzle effect). Most support for this hypothesis, however, comes from experiments with human subjects and simulated prey. We tested the motion dazzle effect using, for the first time, natural predators (cane toads, Rhinella marina) and live prey (house crickets, Acheta domesticus) with altered color patterns. We found no support for the motion dazzle effect as striped crickets did not fare better than solid colored ones. Crickets that spent more time moving, however, were more likely to be eaten. Our results suggest that motion specialized visual predators such as toads overcome the motion dazzle effect and impose stronger selection pressure on prey behavior than on coloration. These findings emphasize the importance of sensory specializations of predators in mediating antipredator strategies. 相似文献
92.
Gloria Guidetti Sara Viotti Pedro R. Gil-Monte Daniela Converso 《Current psychology (New Brunswick, N.J.)》2018,37(4):769-780
This study aimed at the assessment of psychometric properties of the Italian version of the Spanish Burnout Inventory (SBI-Ita) in a sample of Italian teachers and the analysis of burnout profiles based on a model that includes four dimensions: Enthusiasm toward job, Psychological exhaustion, Indolence, and Guilt. A self-reported questionnaire was filled out by 689 Italian teachers. Data analyses performed Multi-sample Confirmatory Factor Analysis and Hierarchical Cluster Analysis. Results confirmed the hypothesized four-factor structure and the discriminant role of Guilt in differentiating clusters. Results highlights the reliability of the SBI-Ita in the assessment of teachers’ burnout. Furthermore, results evidence for a new typology of burnout that differentiate guilty from non-guilty professionals. 相似文献
93.
94.
Shared Communities: A Multinational Qualitative Study of Immigrant and Receiving Community Members 下载免费PDF全文
Sara L. Buckingham Anne E. Brodsky Alessia Rochira Angela Fedi Terri Mannarini Lindsay Emery Surbhi Godsay Anna Miglietta Silvia Gattino 《American journal of community psychology》2018,62(1-2):23-40
Community psychology is central to understanding how immigrants and more established residents of their new settings join together to develop a shared sense of community and membership. In our present study, we explored how newer (i.e., first‐ and second‐generation immigrants) and more established community members form multiple positive psychological sense of community (PSOC) with one another. We conducted a multinational, qualitative study of PSOC through interviews with 201 first‐ and second‐generation immigrants and third generation or more “receiving community members” in three contexts (Baltimore‐Washington corridor of the U.S.; Torino, Italy; Lecce, Italy). Results indicated numerous similarities among the ways in which participants constructed PSOC in shared and nonshared communities, regardless of immigration/citizenship status, length of community residence, city, country, age, or gender. Small, proximal, and salient communities were often particularly important to building positive PSOC, which was formed around diverse membership boundaries. As intersectional beings, members converged and diverged on many characteristics, providing multiple opportunities for members to bring diversity to their communities while sharing other characteristics deemed essential to membership. Nonetheless, findings point to significant, structural challenges rooted in power and privilege that must be confronted to bridge the community‐diversity dialectic and build strong, shared sense of community. 相似文献
95.
Dave A. Gonzalez Sara M. Scharoun M. E. Cinelli P. J. Bryden J. L. Lyons Eric A. Roy 《Journal of motor behavior》2018,50(1):80-95
Tool use is typically explored via actor-tool interactions. However, the target-object (that which is being acted on) may influence perceived action possibilities and thereby guide action. Three different tool-target-object pairings were tested (Experiment 1). The hammering action demonstrated the greatest sensitivity and therefore subsequently used to further investigate target-object pairings. The hammer was removed as an option and instructions were provided using pictorial (Experiment 2), written (Experiment 3), and both pictorial and written formats (Experiment 4). The designed tool is chosen when available (Experiment 1) and when removed as a choice (i.e., the hammer), participants perform the same action associated with the designed tool (i.e., hammering) regardless of instruction method (Experiments 2, 3, and 4). 相似文献
96.
The emotional victim effect (EVE, i.e., that the emotionality of a victim's demeanor affects perceived credibility) is a robust research finding for female victims of rape but much less explored for other types of victims and crimes. In this article, we investigate the EVE with a male assault complainant. In addition, we vary the presentation mode via which the complainant is shown to the assessors. A sample of law students (N = 81) participated in an experiment where they viewed and assessed credibility of a male complainant who appeared either live or on video. The complainant behaved either in an emotional or a neutral manner. Result showed that the presentation mode but not the EVE affected the assessors' credibility assessments: The complainant was perceived as more truthful when communicating live, as opposed to via video. Practical implications, as well as the generality of the EVE, are discussed. 相似文献
97.
Sara K. Moeller Wendy Troop-Gordon Michael D. Robinson 《The Journal of psychology》2015,149(5):427-442
ABSTRACT. Cybernetic theories of self-regulation contend that an individual's goal system may work best to the extent it is differentiated. The present investigation pioneered an assessment of goal differentiation in relation to an important feature of goals—intrinsic motivation—and quantified the extent to which intrinsic motivation systematically increased from low- to mid- to high-level goals, the resulting individual difference termed cybernetic self-determination. In Study 1 (n = 106), it was found that frustrating daily events precipitated motivations to quit at low, but not high, levels of cybernetic self-determination. In Study 2 (n = 111), it was found that negative feedback was associated with reduced goal persistence at low, but not high, levels of cybernetic self-determination. The findings therefore converge on the idea that individual differences in cybernetic self-determination are consequential in buffering reactions to obstacles in daily life. Implications for personality, motivation, and self-regulation literatures are discussed. 相似文献
98.
Camilla Matera Sara Dalla Verde Patrizia Meringolo 《The Journal of social psychology》2015,155(4):381-394
In the present article we aimed at investigating the role of metastereotypes and gender on hearing people’s attitudes towards people with deafness. Ninety-six Italian hearing adults participated in a 2 × 2 experimental study. Participants were presented with the results of a fictitious but apparently real survey concerning the opinions people with deafness have of hearing people. Metastereotypes (positive vs. negative) were manipulated through this presentation. Results showed that metastereotypes interacted with participants’ gender in determining their attitudes towards people with deafness: when positive metastereotypes were activated, women’s attitudes appeared more favorable toward people with deafness if compared to the negative metastereotypes condition. No effect of metastereotypes was observed among male participants. In conclusion, the activation of metastereotypes can be a useful means in intervening to improve attitudes toward people with deafness. 相似文献
99.
Frank M. Schneider Michaela Maier Sara Lovrekovic Andrea Retzbach 《The Journal of psychology》2015,149(2):175-192
The Perceived Leadership Communication Questionnaire (PLCQ) is a short, reliable, and valid instrument for measuring leadership communication from both perspectives of the leader and the follower. Drawing on a communication-based approach to leadership and following a theoretical framework of interpersonal communication processes in organizations, this article describes the development and validation of a one-dimensional 6-item scale in four studies (total N = 604). Results from Study 1 and 2 provide evidence for the internal consistency and factorial validity of the PLCQ's self-rating version (PLCQ-SR)—a version for measuring how leaders perceive their own communication with their followers. Results from Study 3 and 4 show internal consistency, construct validity, and criterion validity of the PLCQ's other-rating version (PLCQ-OR)—a version for measuring how followers perceive the communication of their leaders. Cronbach's α had an average of.80 over the four studies. All confirmatory factor analyses yielded good to excellent model fit indices. Convergent validity was established by average positive correlations of.69 with subdimensions of transformational leadership and leader–member exchange scales. Furthermore, nonsignificant correlations with socially desirable responding indicated discriminant validity. Last, criterion validity was supported by a moderately positive correlation with job satisfaction (r =.31). 相似文献
100.
William J. Chopik Ed O'Brien Sara H. Konrath Norbert Schwarz 《Political psychology》2015,36(5):559-567
Intuition suggests that the Martin Luther King holiday (MLK Day) should improve racial attitudes toward African Americans. However, its influence may depend on whether African Americans are evaluated as a group or individually. In two studies, we assessed racial attitudes either on MLK Day or on a control day. As might be expected, participants had more sympathetic attitudes towards African Americans as a group on MLK Day compared to control days; however, they evaluated individual African American exemplars more negatively on MLK Day compared to control days, who presumably seemed worse by comparison to the eminent political figure. 相似文献