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941.
Grant E. Brown Christopher D. Jackson Brendan J. Joyce Douglas P. Chivers Maud C. O. Ferrari 《Animal cognition》2016,19(6):1143-1150
Recent studies have documented that exposure to high levels of background risk can induce neophobic predator avoidance in prey animals, whereby they respond to any novel cue with an anti-predator response. Such phenotypically plastic predator avoidance may allow prey to maximize anti-predator benefits in variable risk environments. It remains poorly understood whether risk assessment information from different sensory modalities can be integrated to induce generalized, cross-sensory system neophobic responses. Here, we directly test this hypothesis by exposing juvenile convict cichlids (Amatitlania nigrofasciata) to high- versus low-risk environments using either conspecific alarm cue (chemosensory risk) or a model avian predator (visual/mechanical risk) and testing their response to a novel chemosensory cue (Experiment 1) or visual cue (Experiment 2). Our results suggest that regardless of the sensory modality used to increased perceived risk, cichlids pre-exposed to high-risk conditions exhibited increased predator avoidance in response to any novel visual or chemical cue. As expected, cichlids pre-exposed to low-risk conditions did not display any neophobic responses. Our results suggest that induced neophobia is not cue specific; rather, it may function as a generalized response to perceived predation risk. 相似文献
942.
Stephen G. Brown 《The Ecumenical review》2020,72(3):509-512
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945.
This study examines the cross-cultural generality of Hering's (1878/1964) color-opponent theory of color appearance. English-speaking and Somali-speaking observers performed variants of two paradigms classically used to study color-opponency. First, both groups identified similar red, green, blue, and yellow unique hues. Second, 25 English-speaking and 34 Somali-speaking observers decomposed the colors present in 135 Munsell color samples into their component Hering elemental sensations—red,green,blue, yellow, white, and black—or else responded “no term.” Both groups responded no term for many samples, notably purples. Somali terms for yellow were often used to name colors all around the color circle, including colors that are bluish according to Hering's theory. Four Somali Grue speakers named both green and blue elicitation samples by their term for green. However, that term did not name the union of all samples called blue or green by English speakers. A similar pattern was found among three Somali Achromatic speakers, who called the blue elicitation sample black or white. Thus, color decomposition by these Somali-speaking observers suggests a lexically influenced re-dimensionalization of color appearance space, rather than a simple reduction of the one proposed by Hering. Even some Somali Green-Blue speakers, whose data were otherwise similar to English, showed similar trends in yellow and blue usage. World Color Survey data mirror these results. These within- and cross-cultural violations of Hering's theory do not challenge the long-standing view that universal sensory processes mediate color appearance. However, they do demonstrate an important contribution of language in the human understanding of color. 相似文献
946.
Brian C. Kok Joshua E. Wilk Robert E. Wickham Bruce Bongar Lyndon A. Riviere Lisa M. Brown 《Military psychology》2020,32(5):410-418
ABSTRACT Military occupational designations are standardized classifications that help define and convey a service member’s expected duties and responsibilities. The present study examined how occupational designation was related to adverse combat-reactions, specifically posttraumatic stress disorder (PTSD). It was hypothesized that at comparable levels of combat, non-combat units would display greater symptomology than combat units. The study sample consisted of 785 combat-deployed, active-duty enlisted US Army personnel. Participants were administered self-report questionnaires, including the Combat Experiences Scale and PTSD Checklist for DSM-5. Occupation was coded using the three-branch system (i.e., Operations, Support, & Force Sustainment). Hierarchical multiple linear regression (MLR) was run to examine the effect of occupation, combat, and unit cohesion on PTSD symptoms. Operations units reported the highest frequency of combat exposure; however, Force Sustainment units displayed the highest PTSD symptoms. In MLR analysis, there was a significant interaction between Force Sustainment units and combat exposure (β = 0.10, p = .019), that was not observed in Operations or Support units. These findings demonstrate that PTSD symptom intensity is not solely a function of combat exposure, and that non-combat units may react differently when exposed to elevated levels of combat. 相似文献
947.
Jacquelyn K. Mallette Ted G. Futris Assaf Oshri Geoffrey L. Brown 《Family process》2020,59(2):789-806
Fragile families are defined as those that include unmarried or romantically unstable parents who have children and are socioeconomically disadvantaged. Mothers in fragile families may experience risk factors that lead to increased depressive symptoms that inhibit their ability to bounce back after stressful events. Risk factors for poorer maternal mental health may include declines in father involvement and a lack of coparenting support. This study examined the connected nature of coparenting and father involvement over time among continuously unmarried mothers from the Fragile Families and Child Wellbeing Study. A bidirectional latent growth curve analysis demonstrated that early father involvement was associated with a more gradual decline in coparenting support over the child's first 5 years, while early coparenting support also predicted a slower decline in father involvement over time. Steeper declines in coparenting support and father involvement over time were linked with more maternal depression and lower maternal life satisfaction when their child was nine. Results demonstrate a clear need for targeted intervention with both parents in fragile families to promote involved fathering behavior and enhance coparental relationships. 相似文献
948.
Naila A. Smith Joshua L. Brown Tran Tran Carola Suárez-Orozco 《International journal of psychology》2020,55(5):743-753
Parents and friends can help facilitate the academic engagement of newcomer immigrant youth during the early post-migration years. Using an accelerated longitudinal design and the integrative risk and resilience framework, we examined how parent home involvement and friendships were directly and indirectly associated with the development of newcomer immigrant youths' academic engagement. We used data from three waves (Years 3–5) of the Longitudinal Immigrant Student Adaptation study where a culturally diverse group of immigrant youth (N = 354, ages 10–17, MtimeinUS = 3.98 years, SD = 1.39) in the United States reported on their perceptions of parent home involvement (educational values and communication) and friendship (educational values and academic support) in Year 3 and on their academic engagement (behavioural and emotional) across 3 years. Findings showed high-stable behavioural and emotional engagement and direct positive associations between perceptions of parent home involvement and initial levels of behavioural and emotional engagement and between perceptions of friend educational values and initial levels of emotional engagement. Additionally, perceptions of parents' educational values indirectly contributed to initial levels of emotional engagement through positive associations with perceptions of friends' educational values. These findings can inform family–school partnerships and school-interventions targeting newcomer immigrant youths' engagement. 相似文献
949.
Evidence suggests that both men and women perpetrate sexual coercion. Psychological factors, including psychopathic traits and power motivations, have been proposed to characterize male-perpetrated sexual coercion; however, it is unclear whether these factors play a similar role in female-perpetrated coercion or whether other motivations (e.g., intimacy, affect regulation) should be considered. To improve our understanding in this area, the current study first examined relationships between psychopathic traits and sexual coercion in a sample of 1199 undergraduate students (756 women), with gender as a potential moderator of these relationships. Second, the role of motivations for sex (e.g., power, affect regulation) in accounting for the psychopathy-coercion relationship was examined in men and women. Data were collected using an online survey and analyzed using multigroup path analysis. Results implicated impulsive-antisocial traits as particularly important to male-perpetrated verbal (e.g., manipulative) and nonverbal (e.g., physical) coercion, and that this relationship was partially explained by motives for sex involving power. In contrast, psychopathic traits did not appear to play a major role in female perpetrated coercion; instead, emotional value (i.e., intimacy-related) motivations for sex were associated with verbal (e.g., manipulation) coercion in women. In sum, our results support a conceptual model of male perpetration where men who are high in impulsive-antisocial traits may engage in sexual coercion in an attempt to feel powerful. Further, the findings in the female sample suggest that factors other than psychopathy, such as gender role beliefs in regard to sexual encounters, may be particularly important to female perpetrated sexually coercive behavior. 相似文献
950.
Upon hearing a scalar adjective in a definite referring expression such as “the big…,” listeners typically make anticipatory eye movements to an item in a contrast set, such as a big glass in the context of a smaller glass. Recent studies have suggested that this rapid, contrastive interpretation of scalar adjectives is malleable and calibrated to the speaker's pragmatic competence. In a series of eye‐tracking experiments, we explore the nature of the evidence necessary for the modulation of pragmatic inferences in language comprehension, focusing on the complementary roles of top–down information ‐ (knowledge about the particular speaker's pragmatic competence) and bottom‐up cues (distributional information about the use of scalar adjectives in the environment). We find that bottom‐up evidence alone (e.g., the speaker says “the big dog” in a context with one dog), in large quantities, can be sufficient to trigger modulation of the listener's contrastive inferences, with or without top‐down cues to support this adaptation. Further, these findings suggest that listeners track and flexibly combine multiple sources of information in service of efficient pragmatic communication. 相似文献