Frustration and sexual behavior in male rats

Frustration is an emotional state produced by the surprising omission in quantity and/or quality of an appetitive reinforcer. The aversive properties of stressors, such as electric shocks, produce responses similar to those elicited by a state of frustration. In this set of three experiments, we assessed the effects of water immersion (WIM, in Experiment 1)—that is, a physical stressor—and first (in Experiments 1 and 2) and second trials of a consummatory extinction (cE; i.e., a surprising reward omission; in Experiment 3) on the sexual behavior of male rats, as compared with nonstressed animals. The results showed a sexual deficit in the animals subjected to either WIM or cE, relative to control subjects, although these experimental conditions differed in the component of the male sexual response that was affected. The present results accord with the fear = frustration hypothesis, and with Amsel’s frustration theory.     

Context excitation and modulation of conditioned sexual behavior

Three experiments were conducted to investigate direct and modulatory influences of context in the conditioned sexual behavior of male Japanese quail. A preference test procedure was used to assess the acquisition of contextual excitation. In Experiment 1, following direct context-unconditioned stimulus (US) pairings, male quail shifted their contextual preference from an initially preferred context to one in which they received copulatory opportunity with a female quail (US). Unpaired control group subjects did not demonstrate this shift in preference. This place preference procedure was used in Experiments 2 and 3 to assess contextual excitation when context was trained in the presence of a discrete conditioned stimulus (CS). Experiment 2 provided evidence that context can modulate responding to a discrete CS. In Experiment 3, we varied the spatial contiguity between the context and the US. Some subjects received the US directly in the training context, whereas other subjects received the US in an alternate context. Contextual excitation was evident only in subjects that received the former. Thus, there is a dissociation between the modulatory and excitatory properties of context in sexual conditioning that may depend on the context-US spatial contiguity.     

The diagnostic utility of sexual behavior problems in diagnosing sexual abuse in a forensic child abuse evaluation clinic

OBJECTIVE: This study examined the utility of sexual behavior problems as a diagnostic indicator of sexual abuse. The hypothesis was that sexual behavior problems are multiply determined and consequently are variably related to sexual abuse in a clinical sample. METHOD: A sample of 247 children evaluated for sexual abuse at a multidisciplinary forensic child abuse evaluation clinic were included. Results from the Child Behavior Checklist (CBCL) and the Child Sexual Behavior Inventory (CSBI) were analyzed and compared to the results of a structured abuse assessment performed independent of these scores. RESULTS: The forensic team assessment found evidence of sexual abuse in 25% of cases, and no evidence in 61%. Children in this sample exhibited an elevated level of both sexual and nonsexual behavior problems. However, considerable variability was noted in sexual behavior problem scores. Thus, in this study a high score or a low score had no relationship to the diagnosis of sexual abuse. Indeed, nonsexually abused children were just as likely to have high CSBI scores as sexually abused children. CONCLUSIONS: This study found no significant relationship between a diagnosis of sexual abuse and the presence or absence of sexual behavior problems in a sample of children referred for sexual abuse evaluation. The finding suggests that community professionals should use caution in relying on sexual behavior problems as a diagnostic indicator of abuse.     

Influences of social isolation during development on sexual behavior of the rat

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.     

Trauma resilience among youth in substitute care demonstrating sexual behavior problems

OBJECTIVE: The purpose of this longitudinal study was to examine the relationship between several proposed protective factors and trauma symptoms among highly vulnerable youth in the child welfare system. METHODS: Participants were 142 youth identified with a sexual behavior problem and their caregivers. Two waves of data were collected for each participant an average of 18 months apart. Foster parents reported on perceived level of support from the child welfare agency, youth involvement in club activities, and perception of youths' interpersonal and emotional competence. Youth provided self-reports of their sexual and physical abuse experiences, trauma symptoms at both time 1 and time 2, and ratings of parenting practices. RESULTS: Youth with higher rates of sexual abuse showed more negative affect and higher levels of sexual and non-sexual rumination at time 2, controlling for time 1 scores. Boys and youth who experienced better parenting practices displayed lower negative affect. Youth with higher levels of emotional and interpersonal competence showed lower levels of non-sexual rumination. Moderation analyses revealed that youth with more significant sexual abuse histories whose foster parents did not feel supported by their child welfare caseworkers had higher levels of sexually ruminative thoughts. Finally, the results revealed that only youth without sexual abuse histories experienced the benefits of club involvement in terms of lower sexual rumination scores. CONCLUSIONS: This study demonstrated that youth with significant vulnerabilities can still exhibit a degree of protection from trauma symptomatology in the presence of a wide range of personal and social variables. These findings support the efforts of stakeholders to promote strengths at the level of the individual, family, and broader social network and community.     

Reward sequence and reinforcement level as determinants of S− behavior in differential conditioning

In two differential conditioning experiments, groups of 10 rats each differed with respect to average reward and schedule of reward received in S+. Nonreward (N) occurred on all S? trials. In both experiments, extinction of responding to S? (resistance to discrimination) was extensively regulated by reward sequence and was largely independent of average reward. In Experiment 1, resistance to discrimination was a function of transitions from N to rewarded (R) trials (N-R transitions). In Experiment 2, resistance to discrimination was increased by large reward on the R trial of N-R transitions and decreased by large reward on the R trial of R-N transitions. These schedule effects on resistance to discrimination parallel the effects of comparable schedules on resistance to extinction following partial reinforcement. The results are discussed in terms of sequential theory, reinforcement level theory, and their implications for various schedule manipulations that have previously shown S? behavior to be inversely related to average reward in S+.     

A meta-analysis of the relationship of child sexual abuse to HIV risk behavior among women

OBJECTIVE: This study is a meta-analysis of the literature exploring the relationship between child sexual abuse (CSA) and HIV risk behavior among women. Four outcome variables were tested: unprotected sex; sex with multiple partners; sex trading; and adult sexual revictimization. METHOD: Forty-six studies met the inclusion criteria and were included in the analysis, and separate meta-analyses were performed for each of the four dependent variables described above. RESULTS: Using the correlation coefficient r as an effect size estimate, results indicate an average effect size of .05 for the unprotected sex meta-analysis (N = 16 studies), .13 for the sex with multiple partners meta-analysis (N = 23 studies), .12 for the sex trading meta-analysis (N = 23 studies), and .17 for the adult sexual revictimization meta-analysis (N = 21 studies). We conducted a test of three potential moderator variables (source of sample, definition of CSA based on type of contact, and definition of CSA based on maximum age of victim). Results did not support the hypothesis that these three variables explain a significant amount of variability in effect sizes with one exception: Studies that define CSA more broadly to include adolescent victims (e.g., victims up to 17 years of age) had larger and more homogenous effect sizes for the sex trading meta-analysis than those that defined CSA as having occurred at younger ages. CONCLUSIONS: These findings suggest a small positive relationship between CSA and subsequent HIV risk behavior among women that varies as a function of how CSA and HIV risk behavior are operationalized.     

观察学习综述

观察学习已经正式成为心理学上的一个立题,班杜拉认为:观察学习受到一系列的相互联系的心理过程的支配,班杜拉强调观察学习,这对于实际教育工作,尤其是对青少年学生的教育工作具有重要的现实意义。     

The association between childhood and adolescent sexual abuse and proxies for sexual risk behavior: a random sample of the general population of Sweden

OBJECTIVE: Several studies with small and "high risk" samples have demonstrated that a history of childhood or adolescent sexual abuse (CASA) is associated with sexual risk behaviors (SRBs). However, few studies with large random samples from the general population have specifically examined the relationship between CASA and SRBs with a comprehensive set of measures. DESIGN: The study was a cross-sectional retrospective survey of past and current sexual health and behavior. METHODS: A random sample of 4781 persons from the Swedish Post Address Register was obtained, which included 6,119,000 Swedish citizens in 1996. Of those persons, 2810 participants agreed to participate in the study. Participants were interviewed as well as administered a questionnaire regarding their sexual health and behavior. RESULTS: Using Mann-Whitney U tests, a history of CASA was found to be associated with younger age at first intercourse; younger age at diagnosis of first sexually transmitted infection (STI); greater frequency of unintended pregnancy; greater likelihood of participation in group sex; higher likelihood of not interrupting sexual intercourse despite the risk of pregnancy or risk of an STI; greater likelihood of exchanging sex for money or other necessities/drugs; more frequent substance use in the last 48 hours; and higher likelihood of adult sexual and physical assault. CONCLUSIONS: The findings of this study confirm previous research, which has reported an association between CASA and SRBs in smaller and high-risk samples. Clinicians working with adults with a history of CASA should be aware of the relationship between CASA and SRBs and be prepared to address such issues during therapy.     

试论观察调查法在教育研究中的应用

观察调查法是教育研究中一种较为常用的方法.依照不同标准,可分为直接观察——间接观察;参与型观察——非参与型观察;结构型观察——非结构型观察;时间取样观察——事件取样观察等.在教育研究应用过程中,在科学认识观察法作用的基础上,应作好观察设计,科学选择观察类型、方法和途径,认真制定观察计划.实施观察的过程中,要特别注意选择好进入方式,作好观察记录,观察资料的分析处理.     

Dissociation of conditioned appetitive and consummatory sexual behavior: Satiation and extinction tests

Sexual responses were conditioned in male Japanese quail using the opportunity to copulate with a female as the unconditioned stimulus (US). The conditioned stimulus (CS) was a 3-D object made of a taxidermically prepared female quail head mounted on a terry-cloth body. Both appetitive conditioned responses (approach and proximity to the CS) and consummatory conditioned responses (mount and cloacal contact directed toward the CS) developed when 2-min presentations of the CS were followed immediately by the US, but not when the CS and US were separated by trace intervals of 10 or 20 min (Experiment 1). Postconditioning sexual satiation suppressed conditioned cloacal contact responses more than conditioned approach to the CS (Experiment 2), and “acute” extinction suppressed both conditioned mounting and conditioned cloacal contact responses more than conditioned approach to the CS (Experiment 3). These results demonstrate a functional dissociation between conditioned appetitive and consummatory responses and imply that the motivational and/or associative mechanisms underlying the two types of behavior are distinct.     

Second-order conditioning: Different outcomes in fear and eyelid conditioning

Second-order conditioning has been frequently observed with the fear response but not with the eyelid response. The present experiments manipulated the temporal relationship between the second-order and first-order stimulus on second-order conditioning trials. Our results indicated that a trace second-order procedure is not effective with either response system. Second-order fear conditioning was most prominent when the second-order CS terminated at the onset of the first-order CS. This arrangement, however, did not produce second-order eyelid CRs. In eyelid conditioning, the second-order CS appears to inhibit responding to the first-order CS which immediately follows it.     

对我国学前教育公平性的审思

随着社会文化的巨大变迁,我国学前教育领域的不公平现象日益凸显,成为一个不容回避的问题。学前教育的不公平现象主要表现为学前教育资源的配置不均,即政府将有限的学前教育资源分配给了处于优势地位的少数群体,并且正在以“效率优先”的原则追求教育质量的提高。这种不公平现象可以通过“弱势补偿”的政策加以调整,但是,学前教育公平的真正实现仅仅依靠资源配置的合理调整是不够的,它还需要在课程政策上差别对待。     

Stimulus competition in the absence of compound conditioning

Most associative theories have assumed that stimulus competition occurs only between conditioned stimuli (CSs) that are trained in compound. The present research investigated the possibility of competition between two CSs that were individually paired to the same unconditioned stimulus (US). We used human subjects in an anticipatory suppression analogue to Pavlovian conditioning. Experiment 1 showed that X+ training followed by A+ training resulted in impaired responding to X. This did not occur when A+ training preceded X+ training. Experiment 2 replicated the basic effect and showed that it did not occur when the Phase 2 training consisted of A? instead of A+ nor when the A+ pairings occurred in a second context. Experiment 3 showed that A+ pairings occurring in a second context could still produce the effect when X was tested in the context in which the A+ pairings had occurred, but not when X was tested in a context different from that used for A+ training. Collectively, these results suggest that individually trained CSs may compete with each other when one of those CSs is more strongly activated by the test context than the other one.     

Developmental and etiological characteristics of children with sexual behavior problems: treatment implications.

OBJECTIVE: Baseline data are reported on the demographics, psychological adjustment, victimization, and perpetration histories of 127 6- to 12-year-old children who have engaged in developmentally unexpected sexual behaviors. Information regarding the children's caregivers, and their extended families, is also presented. Data were collected during intake of the families into a longitudinal treatment outcome study. METHOD: A comprehensive battery of psychometric devices and a structured interview were completed with 127 children with sexual behavior problems and their primary caregivers at intake to a treatment outcome study. RESULTS: More than half of the children engaging in developmentally unexpected sexual behaviors had been abused both sexually and physically by more than two different perpetrators. One-third of the people who had maltreated these children were less than 18 years old. These children had acted out against an average of two other children. High levels of distress in the children and their caregivers were evident across a number of psychometric and historical variables. CONCLUSION: Children with sexual behavior problems exhibited a number of functional impairments commonly associated with maltreatment, including learning and psychiatric disorders. Their caregivers and families manifested several characteristics that deter children's recovery from maltreatment, including an impaired attachment between parent and child. The scope of the children's problems requires that treatment extend beyond the therapist's office to include schools and other agencies or individuals with whom the child and families have regular contact.