Exposure to Community Violence: Defining the Problem and Understanding the Consequences

Exposure to community violence has emerged as a major risk factor for the development of emotional and behavioral problems in children and adolescents. In the past decade, there has been a proliferation of research within the fields of medicine, sociology, and psychology documenting the rates and consequences of exposure to community violence. This interdisciplinary growth has led to a great deal of variability within the field of exposure to community violence, making it difficult to glean general conclusions regarding rates and impact of exposure. This review advances the current understanding of exposure to community violence by integrating findings across disciplines as well as reviewing the few studies that have provided initial explanatory information regarding mediators and moderators of the relationship between exposure to community violence and its associated outcomes.     

有关西方心理学中生物学化思潮的质疑与思考

从基因的角度认识人的社会行为,以遗传决定论的观点看待心理和行为的产生和发展,这种生物还原论的观点近年来在西方心理学中有着很大的市场。社会生物学、进化心理学和对行为遗传学研究成果的错误理解和解释是这一思潮的主要代表。实际上,基因的作用是有限的,它并不能决定个体的行为选择。个体发展是基因和环境共同作用的产物,心理与行为是受文化制约的,文化决定了个体心理的发展过程。     

Conceptualizing Nonsuicidal Self‐Injury as a Process Addiction: Review of Research and Implications for Counselor Training and Practice

Nonsuicidal self‐injury (NSSI) may be characterized as a process addiction for some individuals who self‐injure. The authors review findings on the addictive features of NSSI, including compulsivity, loss of control, continued use despite negative consequences, and tolerance.     

A functional analysis of another individual's behavior as discriminative stimulus for a monkey.

Key presses of 1 monkey (called the performer) became the basis upon which a 2nd monkey (called the judge) solved conditional-discrimination tasks. First, the performer was trained to press one of two colored choice keys (red or green) depending on the location of a white light in her chamber. The performer's key-pressing behavior was brought under the control of the experimenter by this procedure. Subsequently, the judge was trained to discriminate the performer's key-pressing behavior. In Experiment 1, the judge had to press Key 1 when the performer pressed the red choice key and Key 2 when the performer pressed the green choice key. In Experiment 2, a sample key was introduced. The judge had to press Key 1 when the performer pressed the same colored choice key as the sample; the judge had to press Key 2 when the performer pressed the different colored choice key. In both experiments, the judge was required to attend to the behavior of the performer. It was shown that the performer's behavior served as a discriminative stimulus for the judge's responses in a conditional-discrimination task.     

A behavioral economic analysis of concurrently available money and cigarettes.

In economic terms, consumption of a reinforcer is determined by its price and the availability and price of other reinforcers. This study examined the effects of response-requirement (i.e., price) manipulations on the self-administration of two concurrently available reinforcers. Six cigarette smokers participated in 4-hr sessions in which money and puffs on a cigarette were concurrently available according to fixed-ratio schedules of reinforcement. Once stable responding was obtained with both reinforcers available at Fixed Ratio 100, the response requirement for one reinforcer was systematically varied (Fixed Ratio 1,000 and 2,500), while the other reinforcer remained scheduled at Fixed Ratio 100. Increasing the fixed-ratio size for a reinforcer decreased its consumption, with a greater decrease occurring for monetary reinforcement. This finding was quantified in economic terms as own-price elasticity, with elasticity coefficients greater for money than cigarettes. The effects of fixed-ratio size on response output also differed across the two reinforcers. Although greater responding occurred for money at Fixed Ratio 100, increases in fixed-ratio size (for money) decreased responding for money, whereas the same increase in fixed-ratio size (for puffs) increased responding for puffs. Finally, increasing the fixed-ratio size for one reinforcer had little effect on consumption of the other concurrently available reinforcer. This finding was quantified as cross-price elasticity, with elasticity coefficients near 0.0 for most subjects, indicating little or no reinforcer interaction. The results indicate that the reinforcing effects of cigarettes and money in the setting studied here differed, and that the effects produced by changing the price of one reinforcer did not interact with the consumption of the other concurrently available reinforcer.     

USING HIGH-PROBABILITY INSTRUCTION SEQUENCES WITH FADING TO INCREASE STUDENT COMPLIANCE DURING TRANSITIONS

Making efficient transitions from one instructional activity to another has been shown to increase academic learning time and therefore student achievement. Because compliance with teacher instructions is a prerequisite for efficient transitions, we sought to determine if high-probability (high-p) instruction sequences issued by a classroom teacher would increase student compliance and decrease latency to comply during transitions. Three children in a regular second-grade classroom participated. Each day at the beginning of morning calendar time, the teacher issued five instructions to the class as a group while compliance data were recorded for the 3 target students. Following baseline, a multielement design was used to examine the effects of the high-p instruction sequence. We then systematically faded the number of instructions included in the high-p sequence as a means of transferring stimulus control to low-probability instructions. The procedure was effective for 2 of the 3 participants, and the results were maintained at 2-and 3-week follow-up. The implications of these findings for group applications of the high-p instruction sequence in regular education classrooms are discussed.     

尼古丁依赖对男性吸烟者感知戒烟行为控制的预测：社会支持与抱怨批评的作用

考察尼古丁依赖对男性吸烟者感知戒烟行为控制的预测及他人戒烟社会支持和抱怨批评的调节作用。对326名男性吸烟者进行问卷调查,结果显示：（1）尼古丁依赖显著负向预测感知行为控制;（2）社会支持和抱怨批评共同调节两者关系;在高社会支持且低抱怨批评、高抱怨批评且低社会支持的条件下,尼古丁依赖的预测作用不显著。结果说明,高社会支持在尼古丁依赖削弱感知行为控制过程中起缓冲作用,而高抱怨批评削弱社会支持的缓冲作用。     

Rate dependency, behavioral mechanisms, and behavioral pharmacology.

Behavioral pharmacology has become increasingly independent of the experimental analysis of behavior. At its beginning, behavioral pharmacology was closely related to the experimental analysis of behavior, with developments in each field aiding the other. Early attempts to systematize data in behavioral pharmacology culminated with the development of the rate-dependency concept, but as this principle was found to have more limited generality than originally was hoped, a theoretical void developed. This circumstance was followed by increased reliance on pharmacological theory as a basis for experimentation and interpretation, with an attendant decrease in emphasis on environmental variables and behavioral interpretations. Lack of interplay between behavioral pharmacology and the experimental analysis of behavior is detrimental to both disciplines because each could contribute significantly to the other. The current trend might be reversed if more research were directed at elucidating behavioral mechanisms of drug action.     

Comparing the predictive capacity of observed in-session resistance to self-reported motivation in cognitive behavioral therapy

Self-report measures of motivation for changing anxiety have been weakly and inconsistently related to outcome in cognitive behavioral therapy (CBT). While clients may not be able to accurately report their motivation, ambivalence about change may nonetheless be expressed in actual therapy sessions as opposition to the direction set by the therapist (i.e., resistance). In the context of CBT for generalized anxiety disorder, the present study compared the ability of observed in-session resistance in CBT session 1 and two self-report measures of motivation for changing anxiety (the Change Questionnaire & the Client Motivational for Therapy Scale) to (1) predict client and therapist rated homework compliance (2) predict post-CBT and one-year post-treatment worry reduction, and (3) differentiate those who received motivational interviewing prior to CBT from those who received no pre-treatment. Observed in-session resistance performed very well on each index, compared to the performance of self-reported motivation which was inconsistent and weaker relative to observed resistance. These findings strongly support both clinician sensitivity to moments of client resistance in actual therapy sessions as early as session 1, and the inclusion of observational process measures in CBT research.