共查询到20条相似文献，搜索用时 437 毫秒
1.
This experiment investigated the effects of social isolation during development and during adulthood on the topography of the shock-induced aggressive behavior of rats. Rats isolated during development from weaning to adulthood displayed more shock-induced biting than rats housed in groups during that period. Isolation during development did not affect the frequency of the upright boxing behavior, but isolation during adulthood reduced the frequency of the boxing response regardless of rearing conditions during development. 相似文献
2.
Paul F. Brain David Benton Patricia A. Howell Sandra E. Jones 《Learning & behavior》1980,8(2):331-335
A study was performed in which attacks by four different types of “resident” rat (males housed with fertile females, males housed with sterile females, paired males, and isolated males) on six different types of intruder (isolated males, grouped males, castrated males, isolated females, grouped females, and ovariectomized females) were investigated. The objective was to study features of resident and intruder rats that would allow the designing of an aggression test that used a minimum of animals and produced a rapid behavioral response. In some combinations of residents and intruders, attack was generated within a 10-min test period. Isolated resident males attacked as much as males housed with females; however, paired rats showed only low incidences of attack. The fertility of the female partner did not influence the male’s aggressiveness. Most male attacks were directed towards like-sexed intruders. Only isolated males differentiated between the different treatment types of male intruder, attacking group-housed and castrated rats less intensely than isolates. Of the females, only those that were fertile produced significant amounts of attack behavior and almost exclusively attacked female intruders. Group-housed intruder females received more attacks than isolates. The results suggest optimal conditions for generating two models of attack behavior in the laboratory rat. 相似文献
3.
4.
Although there have been many studies of the interference effect produced by exposure to inescapable shock, little is known about the role of shock intensity. This experiment factorially manipulated four levels of shock intensity during exposure to inescapable shock and three levels of intensity during the test for interference. Interference occurred at each training shock intensity when training and test shocks were similar. Interference was not obtained when training intensity was high but testing intensity low or medium or when training intensity was low or medium and test intensity was high. These findings pose problems for learned helplessness, learned inactivity, competing motor response, and catecholamine depletion hypotheses of the interference effect in the rat. 相似文献
5.
James F. Brennan 《Learning & behavior》1975,3(4):277-281
Following 300 training trials in two-way shuttle avoidance signaled by a tone (CS+), two groups each of weanling and adult rats were given Pavlovian discrimination training in which the CS+ was followed by inescapable shock, and a more intense tone (CS—) signaled no shock. An additional group at each age level received both tones paired randomly with shock or no shock. Subsequent generalization tests along the frequency dimension indicated that both pups and adults tested at the CS+ intensity showed similar gradients of frequency control. Gradients for the adults tested at the CS — intensity tended to be inverted, with least responding at CS—, a result not found in the young subjects. The results were considered in light of Pavlovian extradimensional influences on the control of avoidance behavior. 相似文献
6.
王曰珠 《安庆师范学院学报(社会科学版)》2006,25(5):92-95
美国小说家海明威和杰克.伦敦在其小说创作中都塑了一些“硬汉子”形象。这些人物的共同点是在逆境中不畏艰难,敢于与命运抗争。但作家所处的不同时代背景和他们不同的世界观使他们创造的“硬汉子”的真正内涵不尽相同。 相似文献
7.
Mandy Grumm Sascha Hein Michael Fingerle 《European Journal of Psychology of Education - EJPE》2013,28(1):121-131
School-based aggression prevention programs have been implemented in many educational institutions, and fostering the development of social competencies is one of the central aspects of many approaches. The aim of the present study was to assess the level of subjectively perceived usefulness of the prevention program “Faustlos” in connection with the self-reported levels of aggressiveness and social competencies in a sample of German fourth graders. The children had completed the prevention program. Results suggest differences in the level of aggressiveness and social competencies between children with different levels of perceived usefulness of the prevention program. 相似文献
8.
Soziale Ungleichheit beim Zugang in eine Berufsausbildung: Welche Bedeutung haben die Institutionen?
The corporatistic governance model of nonacademic vocational training, which is predominant in Germany, has produced heterogeneous and complex conditions for the access to vocational training. Which training programs are offered and the selection of applicants is largely determined by the training companies themselves. Adolescents interested in vocational training are thus confronted with diverse admission requirements. Which resources they can and have to use in order to receive a training position is significantly determined by the respective admission requirements. The present paper elucidates key institutional conditions of the access to vocational training which can serve as explanations for the (re-)production of social inequalities in the transition process from school to vocational training. In particular, the inequalities with respect the admission to vocation training along the lines of educational degrees, gender, as well as regional, social, and ethnic backgrounds are investigated. 相似文献
9.
李姜 《洛阳工业高等专科学校学报》2007,17(2):78-81
大约在1931年～1945年期间,有相当一批外国知识分子奔赴中国各抗日战场.他们带着不同的文化背景和精神传统,以独特的视角报道中国的抗日战争.他们的来访活动把中国的抗日战争展现在世界人民的眼中,他们用手中的笔鼓舞中国人民的抗战士气,他们为此而写作的报道和文章架起了中国与世界相互了解的桥梁. 相似文献
10.
Jon L. Williams 《Learning & behavior》1982,10(3):305-313
Thirty colonies, each consisting of a female and two male adult albino rats, remained intact for an 8-week period. Naive conspecific intruders were then introduced into each colony for a 10-min test for 5 consecutive days. Videotapes of the tests were scored for aggressive and defensive behaviors. In every colony, aggression was greatest for a single alpha male. The alpha rats were randomly given one of three treatments: wheel-turn escape training, inescapable yoked shock, or restraint without shock. The alpha rats were then returned to their colonies and an intruder test was given 26 h later. Significant decreases in aggressive responses and increases in defensive behaviors occurred in the alpha yoked group but not in the other alpha groups. The nonalpha colony partners of the alpha yoked rats showed the opposite changes following the treatment. A final intruder test 72 h later revealed that the deficits in aggression of the alpha yoked group were still present but that the behaviors of most of the other groups were beginning to return to their respective pretreatment levels. These findings were discussed in terms of the concept of learned helplessness and alternative theoretical explanations. 相似文献
11.
以初中生为被试,采用组间实验设计,通过分离具体刺激种类的方法分别考察身体暴力及言语暴力因素对不同性别个体内隐性攻击性的影响,着重考察针对身体暴力因素的阈下刺激。结果表明:(1)青少年在接受身体和言语暴力材料的启动后,内隐攻击性均显著提高。(2)不同启动材料对内隐攻击性的影响表现出性别差异。身体暴力启动材料更容易启动男生的内隐攻击性,而言语类暴力启动材料则更容易启动女生的内隐攻击性。(3)青少年在接受不同阈值水平启动条件下的内隐攻击性受到性别影响。阈值上启动材料更容易启动男生的内隐攻击性;与男生相比,女生的内隐攻击性更容易受阈值下启动材料的影响。 相似文献
12.
Matthew M. Martin Carolyn M. Anderson Patricia A. Burant Keith Weber 《Communication quarterly》2013,61(3):304-317
This study focused on verbal aggression in sibling relationships. The study examined the relationship between (a) verbal aggressiveness with satisfaction and interpersonal trust, (b) the relationship between teasing and verbal aggressiveness, (c) whether people more satisfied with their siblings report that receiving verbal aggression is more personally hurtful, and (d) whether sibling sex influenced verbal aggression in the relationship. Results support the destructiveness of verbal aggression in that verbal aggressiveness was negatively related to satisfaction and trust. Teasing was found to be positively related to being verbally aggressive. Sibling satisfaction was positively related to being hurt from receiving verbally aggressive messages. Results involving sex show that women are more satisfied and report using less verbal aggression and teasing than the other sibling dyads. Conclusions, future directions, and limitations are discussed. 相似文献
13.
Squirrel monkeys were given either forward pairings of a bite-tube CS and shock US or backward pairings of these stimuli. Backward pairings produced stronger control of biting by the bite tube alone than did forward pairings. In a second experiment, subjects received backward pairings of US and CS with either a fixed ITI or a random ITI. Conditioned biting was obtained only when trials were presented with a fixed ITI. The magnitude of unconditioned biting was also significantly greater with the fixed ITI. It was argued that these results demonstrate that conditioning in this situation depends upon the degree to which biting predicts a relatively long shock-free period. When trials occur randomly in time, biting predicts no definite shock-free period; hence, it is not learned. 相似文献
14.
Christy M. Walcott Amber Upton Larry M. Bolen Michael B. Brown 《Psychology in the schools》2008,45(6):550-561
Different functions within different forms of aggression were examined in relation to peer‐perceived preference and popularity among middle school students. Two hundred and three 7th grade students were nominated by a subset of their grade mates based on indices of likeability, popularity, and aggressiveness. Both linear and curvilinear associations were examined. Lower peer preference, but higher popularity, was associated with increased levels of all types of aggression, supporting the need to differentiate the relationship between aggression and these two facets of peer status. Relational aggression was associated with both low and high levels of popularity. Overt aggression was related to low peer preference and, to a lesser degree, high peer preference. It appears that what separates low‐ and high‐status students is not the presence of aggression per se, but how effectively their displays of aggression achieve their social goals. Findings are discussed in respect to social dominance theory, and implications for practice are considered. © 2008 Wiley Periodicals, Inc. 相似文献
15.
G A Waas 《Child development》1988,59(4):969-975
Peer-rejected high-aggressive, rejected low-aggressive, and non-rejected third- and fifth-grade boys were shown sets of drawn pictures differently balanced on Kelley's social dimensions of distinctiveness (i.e., depicting a hypothetical peer interacting with other children) and consistency (i.e., depicting the peer interacting with the subject) information. Following each set, a provoking incident involving the subject and peer was described in which the subject experienced a negative outcome and the peer exhibited ambiguous intent. When given no social information, rejected high-aggressive and rejected low-aggressive boys made more hostile attributions and suggested more hostile responses. When provided social information, however, all groups made similar attributions and weighted consistency information more heavily in their evaluations. All groups maintained a consistent response style across information conditions, with rejected high-aggressive boys suggesting the most aggressive responses. Implications for the treatment of childhood aggression are discussed. 相似文献
16.
Two experiments examined the conditions under whichBetta agonistic responding occurs by manipulating physical space and the species and social responsiveness of an opponent. In Experiment 1, both the species (conspecific or nonconspecific) and the aggressiveness (aggressive or nonaggressive) of the opponent were manipulated. The results indicated that agonistic behavior was greater with both conspecifics and aggressive opponents. Experiment 2 examined the effects of physical space and social responsiveness of the opponent on intraspecific aggressive behavior. An inverse relationship was found between physical space and the number of attacks directed toward the opponent. The results of both experiments also indicated thatBetta tend to attack aggressive opponents more than nonaggressive ones. It is suggested thatBetta aggress either when the individual animal is threatened or when physical space is limited. 相似文献
17.
Kristin Marie Valencic Michael J. Beatty Jill E. Rudd Jean A. Dobos Alan D. Heisel 《Communication quarterly》2013,61(3):327-341
The purpose of this study was to test Beatty and McCroskey's communibiological model of trait verbal aggressiveness. In general, this model views trait verbal aggressiveness as an expression of temperament; specifically, that trait verbal aggressiveness represents low thresholds for the fight or flight (FFS) neurobiological system. This model further contends that behavioral inhibition circuitry (BIS) moderates FFS activation by tempering aggressive impulses, otherwise FFS activation would manifest itself in the form of physical rather than verbal attacks. Beatty and McCroskey (1997) propose that low thresholds for stimulating the behavioral activation system (BAS) should be related to trait verbal aggressiveness to the extent that the construct involves a proactive rather than a purely reactive interpersonal function. Because previous research indicated that psychoticism (P), neuroticism (N) and extroversion (E) represent psychological manifestations of the FFS, BIS, and BAS systems, respectively, hypotheses linking P, N, and E to trait verbal aggressiveness (VAS) were tested. A multiple regression equation based on disattenuated correlations explained approximately 46% of the variance in VAS scores. Specifically, (1) the results for P and N were consistent with predictions derived from Beatty and McCroskey's model, and (2) the results for E were indicative of a purely reactive function of trait verbal aggressiveness. Implications for theory and research are discussed. 相似文献
18.
Robert J. Blanchard Charles F. Kleinschmidt Chantis Fukunaga-Stinson D. Caroline Blanchard 《Learning & behavior》1980,8(1):177-183
Male rats in a restraining tube bit and wounded the snout of an anesthetized male conspecific as a direct function of the intensity of tailshock, with bites declining systematically in the time interval after shock. Female rats’ bites on a male rat were also dependent on shock, but did not produce wounds. When an anesthetized cat was presented to rats in the same situation, females bit and wounded the cat before shock was given, while the males again bit only in response to shock. These data were interpreted as indicating that male bites on both a conspecific and a predator fit the same defensive biting pattern. In contrast, females’ bites on a male rat are actively inhibited, while females’ bites on a predator are neither inhibited nor shock dependent: this latter finding may reflect the adaptive value (protection of the young) of attacking a predator before it hurts the female rat. 相似文献
19.
Peer group contextual effects of aggressive behavior among middle school students (6th-8th graders) were examined using a short-term longitudinal design. More specifically, the homophily hypothesis that peer group membership influences individual-level bullying and fighting was evaluated with multilevel sex-specific models of individual- and peer-level aggression scores. Peer groups were identified via social network analysis. Intraclass correlation coefficients yielded through hierarchical linear modeling demonstrated substantial within-group similarity on self-reported bullying and fighting, suggesting that students affiliate with individuals who bully and fight at the same frequency. Peer group bullying and fighting was associated with individual-level behavior, even after controlling individual baseline levels for males and females. However, peer contextual effects explained more variance in individual bullying than individual fighting. This differential impact of peer group membership suggests that future studies consider peer relations across subtypes of aggression. 相似文献
20.
The central question asked was whether differential shock modification occurs (posturally induced differences in shock contact time) under signaled and unsignaled conditions using scrambled shock. Shock modifiability was tested with two different shock sources, intensities, and scrambling units by measuring the duration of time subjects were in contact with shock. Subjects were then given a choice between the signaled and unsignaled conditions. Results showed that differential modification of shock contact time did not occur between signaled and unsignaled conditions with any shock source, intensity, or scrambler unit. In addition, subjects preferred the signaled condition. It was concluded that experiments using scrambled shock are not confounded by posturally induced differences in shock contact time. 相似文献