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1.
Male and female rats were weaned at 14 days of age and raised in social isolation or with three other animals. At maturity the male isolates displayed less male sexual behavior than the socially reared Ss. Female isolates, after ovariectomy and injection with androgen, exhibited much less male sexual behavior than control females similarly tested. After being brought into estrus by injections of estrogen and progesterone, the female sexual behavior of female social and isolate Ss did not differ. Data were interpreted as indicating that social isolation during development deprives rats of critical experiences necessary for development of appropriate responses to social stimuli eliciting male copulatory behavior in both sexes. 相似文献
2.
南拳动作刚猛灵巧、绵密迅疾、动作紧凑、步法稳健,对塑造行为的积极性具有重要意义。南拳文化对思维、行为、心理的熏陶作用有助于在头脑中形成一系列条件反射,将南拳练习融入日常学习和生活中,有利于在思维中形成稳固的积极惯性,并让其成为性格的重要组成部分。南拳的刚烈之气,威猛之势对塑造积极行为具有心理暗示作用,探究南拳对塑造积极行为的影响,对推广南拳有积极意义。 相似文献
3.
Gerbils and rats learned equally well to discriminate the lighted, safe arm from the unsafe arm during Y-maze avoidance trials. Gerbils, however, were inferior to rats in initiating this response in time to avoid shock. Two subsequent experiments on passive avoidance did not support the interpretation of these data based on a greater incidence of shock-induced activity suppression in gerbils. In both experiments, gerbils required more shocks than rats to learn a staying response, indicating a pronounced locomotor response bias in gerbils that is not compatible with the required passive avoidance response. A fourth experiment, using a shuttlebox, found that the relative active avoidance performance by these species depends upon whether intertriai responses are permitted and punished. When they are, gerbils are inferior to rats, since their high level of locomotor responding is not compatible with the behavior required, i.e., staying during the intertrial interval and running during the CS-US interval. On the other hand, gerbils are not inferior when intertrial responses are prohibited, since their locomotor bias is not punished and is compatible with the required avoidance response. 相似文献
4.
从新疆拳击项目在新疆开展现状为研究对象,通过近五年新疆拳击实力的现状分析,探究影响新疆拳击发展的主要因素,并提出可持续发展的对策,其目的为促进新疆优势项目拳击运动更好更快的发展提供指导意见。 相似文献
5.
Kirk M. Broome Kevin Knight George W. Joe D. Dwayne Simpson David Cross 《Structural equation modeling》2013,20(1):37-51
Prior research has linked substance abuse and antisocial behavior. This study uses structural models to examine developmental stages of antisocial behavior and their relation to during‐treatment performance of probationers in a 4‐month inpatient program. Separate childhood and adulthood antisocial functioning components were identified, and each predicted during‐treatment psychological functioning and program perceptions. Specifically, adulthood hostility predicted psychological functioning, and adulthood risk‐taking predicted program perceptions; the effect of childhood antisocial behavior was completely mediated by adulthood functioning. 相似文献
6.
The hypothesis that isolation rearing enhances exploration was tested in two settings which varied the extent to which exploratory behavior would be affected by competing hyperactivity. Experiment 1 measured exploration as contact of a discrete novel stimulus, in terms of bout frequency and duration. Locomotor activity was measured by photocell beam interruption. Isolation-reared rats were hyperactive, showed an increased incidence of exploratory bouts but no differences in duration of exploratory behavior, compared with group-reared controls. Experiment 2 measured, independently, locomotor activity and the preference for a novel environment over a familiar one. Isolation-reared rats, whether male or female, showed enhanced novelty preference compared with controls. No significant differences were found in locomotor activity. The results are discussed in terms of the hyperactivity of isolates interfering with investigative behavior by response incompatibility. 相似文献
7.
Richard E. Brown 《Learning & behavior》1991,19(1):18-28
Two experiments investigated the effects of isolation rearing on olfactory communication in rats. In Experiment 1, there were significant rearing and gender effects on the time spent investigating conspecific odors, the preferences for these odors, and the amount of urine marking over these odors by sexually naive male and female rats. Experiment 2 found significant effects of rearing condition and sexual experience on the responses of male rats to conspecific odors. In general, isolation rearing increased the time spent investigating conspecific odors, but reduced the amount of urine marking over these odors and altered the odor preference scales. These results suggest that the responses of both male and female rats to the odors of conspecifics are modified by rearing experience. The importance of learning conspecific odor signals for the development of normal social behavior is discussed. 相似文献
8.
Although state-dependent retention (SDR) has been the focus of considerable research in recent years, there has been little work demonstrating this phenomenon when the treatment is administeredafter learning. In the present study, the effectiveness of two different treatments, pentobarbital and shock-induced stress, in producing postacquisition SDR in rats was examined. In all experiments, water-deprived rats were exposed to a novel flavor, apple juice, on each of 2 days. Subjects that remember their initial exposure to this substance should show an increase in consumption on their second exposure (i.e., an attenuation of neophobia). It was found that subjects exposed to pentobarbital (Experiment 1) or shock-induced stress (Experiment 2) immediately after their initial exposure did not increase their intake on the subsequent exposure unless they were reexposed to pentobarbital (Experiment 1) or shock-induced stress (Experiment 2b) shortly prior to that exposure. These results clearly show that this “attenuation of neophobia” paradigm can be used to investigate postacquisition SDR. 相似文献
9.
Five groups of male mice were given either isolation or grouped housing conditions or fight training as manipulations of social backgrounds prior to 5 days of shock-induced aggression under conditions resembling the rat paradigm for shock aggression. Three groups were given similar fight training but different levels of shock intensity during the shock trials. Shocks moderate in intensity as compared to very low intensity shocks produced more biting attacks and upright postures and maintained aggressiveness. Raising the shock intensity further produced fewer biting attacks, more upright postures, and a decline in aggressiveness. Biting attacks proved to be a more discriminating measure of differences created by different social backgrounds than the upright postures. 相似文献
10.
Electric shocks were delivered to rats through a subcutaneously implanted back electrode. Experiment 1 evaluated the relationship between number of paws grounded and total power dissipated in the rat. In Experiment 2, the threshold of shock-induced vocalization, a putative index of aversiveness, was found to be positively correlated with the number of paws grounded. These findings suggest that when the backshock technique is used, the aversiveness of shock potentially can be modified by the posture adopted by the experimental animal. Caution should be exercised, therefore, in attributing deficits in escape behavior following inescapable shock administered with back electrodes to learned helplessness. 相似文献
11.
在拳击训练中,运动员的恐惧心理时有产生,如果不缓解和消除这种恐惧心理,会对训练的效果产生不良的影响。基于此,本文过运动员在拳击训练中产生恐惧心理的原因进行调查分析,并提出相应的缓解于消除其恐惧心理的途径与对策,目的在于为提高拳击训练的效果,促进运动员拳击运动水平的健康发展,提供必要的借鉴与参考。 相似文献
12.
In Experiment 1, 12 rats were exposed to an FT 60 schedule of food reinforcement, followed either by extinction or by a massed-food control condition, in the presence of a wood block. In 9 rats, wood-chewing behavior increased systematically during the FT 60 condition and declined again during extinction or massed food, while the other 3 rats showed virtually no chewing behavior at any stage of the experiment. In Experiment 2, frequency and bout duration of wood-chewing under an FT 60 schedule of food reinforcement declined as body weight increased, in 7 rats. We conclude that wood-chewing qualifies as a schedule-induced behavior, and that it resembles schedule-induced drinking in its dependence on body weight. Unlike drinking, however, induced chewing occupied the middle region of the 60-sec interreinforcement interval, declined markedly within the session, and showed considerable within- and between-subject variability. 相似文献
13.
“武”文化包含武术文化和武侠文化,是对二者的整合与超越。武当“武”文化是武当文化的重要组成部分,其创新是推动武当文化产业发展的重要发展。系统梳理20世纪50年代以来武当“武”文化影视剧取得的成果,不但可以总结创新经验,更能在此基础上发现武当“武”文化影视在创新方面存在的诸多问题,进而提出创新对策。 相似文献
14.
Valérie Camos 《European Journal of Psychology of Education - EJPE》2003,18(3):251-265
The aim of this study was twofold. First, it evaluated the developmental changes on frequency of use, efficiency, and choice
of counting strategies from childhood to adulthood. Second, it determined the adaptation of the counting strategies to the
structural features of the task. Participants in seven age groups ranging from 5-year-old to adulthood were asked to count
dots in arrays varying on size, arrangement, density and size of the subgroups. The nature of the strategies used and their
efficiency, i.e. speed, accuracy and rate of manual pointing, were recorded using the overt behavior technique. The developmental
pattern of results for the four main strategies, counting by ones, by ns, addition and multiplication, was in line with Siegler’s
overlapping waves model. The structural features affected the use of the strategies since 13 years, except for the multiplication
strategy. Finally, intra- and inter-individual variability in strategy showed a monotonous increase with age. Implications
for understanding the development of counting skill are discussed. 相似文献
15.
Twenty-five hooded rats were given 50 avoidance training sessions with leverpress IRTs obtained during as well as between sessions. Five qualitatively different shapes to the IRT profiles were found: single- or double-peaked shapes, positively or negatively accelerated shapes, and U-shaped distributions. Both the specific shape of the profile and the stability of that shape during a session were related to the avoidance proficiency of an individual rat. Six rats received two additional training sessions, with the final 30 min of each videotaped to obtain frequency counts of nine behavior categories. The observational data showed that avoidance-proficient rats typically incorporated the leverpress requirement into repetitive response chains. 相似文献
16.
STATEMENT OF PROBLEM: Childhood maltreatment is known to be a risk factor for a range of later problems, but much less is known about adolescent maltreatment. The present study aims to investigate the impact of adolescent maltreatment on antisocial behavior, while controlling for prior levels of problem behavior as well as sociodemographic characteristics. METHODS: Data are from the Rochester Youth Development Study, a cohort study of the development of problem behaviors in a sample of 1,000 urban youth followed from age 13 into adulthood. Subjects include 68% African American, 17% Hispanic, and 15% White youth. This analysis includes a maximum of 884 subjects, of whom 9.3% had substantiated maltreatment reports in adolescence. Among the maltreated adolescents, 14 experienced sex abuse, 36 experienced physical abuse, and 32 were neglected or emotionally abused. Outcomes explored in late adolescence (ages 16-18) and young adulthood (ages 20-22) include arrest, self-reported general and violent offending, and illicit drug use. Control variables include prior levels of these outcomes as well as sociodemographic characteristics like poverty, parent education, and caregiver changes. RESULTS: Logistic regression analysis determined that experiencing any substantiated maltreatment during adolescence increases the odds of arrest, general and violent offending, and illicit drug use in young adulthood, even controlling for sociodemographic characteristics and prior levels of problem behavior. Different types of adolescent maltreatment, including neglect, appear to produce similar adverse behavioral consequences. CONCLUSIONS: Adolescent maltreatment necessitates increased attention in view of its enduring and potentially wide-ranging impact on the life span. 相似文献
17.
BackgroundCollege students with suicidal ideation (SI) are at high risk of suicide. Adverse childhood experiences (ACEs) are important risk factors for suicidal behavior. Most research in this area has been restricted to 10 conventional ACEs and suggests negative long-term developmental effects from other common childhood adversities such as peer victimization, peer isolation/rejection, exposure to community violence, and low socioeconomic status.ObjectiveTo test the unique and cumulative associations of 14 different ACEs with SI among young adults.Participants and SettingParticipants were 989 college students from two universities in China’s provincial-leveled Hui Autonomous Region.MethodsAssociations between ACEs and SI were analyzed by logistic regression. A Chi-square trend test was used to examine the association between cumulative ACEs and SI.ResultsThe rates of suicidal ideation, plans, and attempts among the cohort were 11.9%, 3.7%, and 1.6%, respectively; 43.9% had experienced at least one ACE. The strongest predictor of SI in adulthood was peer isolation/rejection, followed by emotional neglect, then low socioeconomic status. There was a cumulative effect of ACEs and SI, whereby the greater the number of ACEs, the greater the likelihood of SI.ConclusionPeer isolation/rejection, emotional neglect, and low socioeconomic status were associated with increased risk of SI in adulthood. Two (peer isolation/rejection and low socioeconomic status) of the three factors that emerged from the analysis are not typically included in ACEs research. There was a cumulative effect of 14 kinds of ACEs on SI among young adults. Early recognition of risk factors is therefore important. 相似文献
18.
Findings on the relationship of experienced sexual abuse and abuse behavior in adulthood are ambiguous. However, associations between experienced abuse and neuroticism as well as between neuroticism and active child abuse have been reported repeatedly. In our study, we compared pedosexual child abusers with consumers of internet child pornography and control subjects with adult-sexual preference with regard to traumatic childhood experience (Childhood Trauma Questionnaire, CTQ), personality traits (NEO – Personality Inventory – Revised, NEO-PI-R), and sexual abnormalities (Multiphasic Sex Inventory, MSI). In an initial analysis, sexual abuse experienced in childhood was not directly linked to sexual abuse behavior in adulthood. However, this relationship was mediated by neuroticism. In a second step, the CTQ scales were conflated and, using a structural equation model, direct links between the overall level of abuse experienced in childhood (generally high CTQ levels) and sexual abuse behavior in adulthood revealed again the mediation by neurotic personality. We conclude that the overall level of abuse experienced in childhood in general, and less sexual abuse experience in particular, modulates the tendency for child sexual abuse behavior in adulthood. Data suggest that, depending on the resilience of an individual, abuse experience during childhood increases the likelihood of developing neurotic personality traits in later life, which are in turn considered to increase the risk of child sexual abuse in child sex offenders. 相似文献
19.
Experiment 1 examined male Swiss-Webster, C57, and DBA mice that were housed individually or grouped for 2 weeks and subsequently presented with ovariectomized, estrogenprimed, progesterone-treated females, Within each strain, social isolates showed more mounts, intromissions, and ejaculations and shorter latencies to first mount and intromission, Experiment 2 involved a similar comparison of isolated and grouped male rats, hamsters, and gerbils, Isolation produced no major effect in hamsters but reduced performance in rats and gerbils, The results suggest that facilitation of sexual action patterns by isolation is characteristic of the mouse species, Response decrements with postpubertal isolation in the rat resemble effects of prepubertal isolation in this species, These species differences may parallel differences in physiology and social behavior. 相似文献
20.
Two experiments investigated the importance of visual sensory modality in mediating enriched environmental effects during the preweaning period, and the importance of onset and duration of the enriched experience during the same period. Rat mothers and pups were exposed together in an enriched environment for either 7 or 11 days at different periods from Day 1 to Day 21. Also included was a group of rats which received only handling from Day 11 to Day 21 postpartum and another group in which the mothers were exposed to the enriched environment during the last trimester of pregnancy. Some rats were tested at 27 days of age, and others were tested at 64 days of age in the Hebb-Williams maze test. It was found that exposure in the enriched environment for a period of 7 days before the eyes opened improved rats’ problem-solving behavior above that of control rats and to the level of rats which received such experience after the eyes had opened. Handling of rats did not improve problem-solving behavior, nor did exposure during the gestation period. It was concluded that vision is not the most important factor in mediating effects during the preweaning period, since improvement in problem-solving behavior can occur before the visual system is fully developed. It was suggested that the beneficial enrichment effects might be mediated by the mother, who, in some way, transmits additional stimulation to the infant rat during this early stage of development. 相似文献