Trace autoshaping: Acquisition, maintenance, and path dependence at long trace intervals

The pigeon's tendency to acquire and maintain signal-directed key pecking under a trace conditioning procedure was parametrically examined. In Experiment 1, the percentage of CS trials with a key peck response was a decreasing function of the trace interval for separate groups of pigeons. The majority of subjects acquired signal-directed key pecking with trace intervals as long as 36 sec. In Experiment 2, differential maintenance of key pecking occurred across trace intervals in a within-subject procedure. Maintenance of key pecking at 36- and 60-sec trace intervals was path dependent in that responding depended on the subject's performance under the preceding trace interval.     

Pharmacotherapy of schizophrenia and affective disorders: Behavioral assessment of psychiatric medications

Objectively defined, publicly observable ward behaviors (body activity, extremity activity, scanning, social interaction, proximity, participation, laughing/smiling, and idiosyncratic behavior) emitted by psychiatric inpatients with either schizophrenic or affective disorders were time sampled both before and during the administration of psychiatric medications (neuroleptics, tricyclics, and lithium). The data indicate that the primary effects of the pharmacological interventions are confined to activity measures and symptoms rather than social behaviors. The implications of these results for treatment protocols are discussed in terms of interactions between pharmacological and psychosocial interventions. In addition, rates of behavior during treatment were related to baseline rates via a log-log function of negative slope, a result that is consistent with data derived from the infrahuman laboratories. Taken together the results provide support for attempts to relate preclinical and clinical psychopharmacology and suggest that behavioral assessment can be applied profitably to drug effects in clinical situations.These investigations were supported in part by State of Illinois Department of Mental Health and Developmental Disabilities Grants RD836-13 and RD622-02 to the first author. The cooperation of the Illinois State Psychiatric Institute staff is gratefully acknowledged. Assistance in data collection was provided by S. Sussman and K. Mueser.     

Pharmacological and Behavioral Strategies for Smoking Cessation

After over two decades of intensive research, a variety of smoking cessation strategies, both behavioral and pharmacotherapeutic, have been developed and clinically validated. In this review, pharmacological products available for smoking cessation are profiled and examined for efficacy. Results of a recent comprehensive review and meta-analysis by the Agency for Health Care Policy and Research on the effects of behavior therapy on smoking cessation are also discussed. Further, meta-analyses and studies exploring the important interaction between pharmacological and behavioral therapies are considered. Applications of the growing wealth of smoking cessation strategies are discussed with respect to the needs of some special subpopulations of smokers including highly nicotine-dependent smokers and smokers with comorbid psychiatric diagnoses.     

Source dependence in the valuation of objects

We ran two experiments to test whether people value objects more highly when they obtain those objects due to exemplary performance at a task. In the first, subjects who believed they had obtained a prize due to their performance on a classroom exercise valued it more highly than those who believed they had obtained it by chance. In the second, subjects who obtained a prize due to exemplary performance on a task valued it more highly than those who obtained it due to their poor performance. In both experiments, this ‘source dependence’ effect is approximately equal in strength to the endowment effect, which compares the valuation of subjects with and without the prize. We suggest a possible explanation for this source-dependence effect based on associationism, and rule out two alternative explanations.     

冲动性对不同成瘾行为发展的调控及其神经机制

近年来越来越多的研究证据提示, 个体冲动性在成瘾疾患发生发展机制中具有关键作用, 可能成为成瘾行为的潜在易感标记以及早期识别和干预的重要靶点, 但冲动性对不同成瘾行为变化发展的调控机制尚不明确。项目拟综合跨成瘾谱系比较、纵向追踪设计、冲动行为干预等研究途径, 采用人格测量、神经认知、神经影像等技术, 首先比较尼古丁依赖者与网络游戏成瘾者的冲动性结构及其在前额叶–纹状体环路的结构功能改变; 然后采用混合分组设计筛选出具有高低冲动性的非成瘾青少年进行连续追踪研究, 考察冲动性对尼古丁依赖与网络游戏成瘾的预测效力; 并采用认知行为训练, 对吸烟成瘾者与网络游戏成瘾者进行冲动干预, 考察行为干预对冲动性水平及前额叶–纹状体环路功能的改变, 以及对不同成瘾行为发展的抑制后效。旨在探索冲动性作为成瘾的潜在易感标记及干预靶点的效力。     

大学生手机互联网依赖对疏离感的影响：社会支持系统的作用

为探讨大学生手机依赖、现实社会支持、网络社会支持及疏离感的关系。采用大学生手机成瘾倾向量表、青少年疏离感量表、大学生网络社会支持量表和青少年社会支持量表对442 名大学生进行测量。结果发现：（1）不同手机依赖水平与疏离感差异显著,高手机依赖者的疏离感均显著高于低手机依赖者;（2）手机依赖对疏离感有显著正向预测作用,网络社会支持和现实社会支持对疏离感有显著负向预测作用;（3）现实社会支持在手机依赖与疏离感间具有中介效应和调节效应,手机依赖既直接对疏离感产生影响,又通过现实社会支持对疏离感产生影响,中介效应占总效应的比例为17.8%;（4）现实社会支持和网络社会支持在手机依赖与疏离感间均具有调节效应,可以缓冲手机依赖对疏离感的影响。     

试论弗洛姆的规范人本主义伦理学

本文论述了弗洛姆规范人本主义伦理学的主要内容与价值旨趣 ,揭示了他的社会批判哲学和规范人本主义伦理学之间的内在联系 ,认为他的规范人本主义伦理学的主要目的在于从社会心理学的层面重建理性主义的人道主义伦理价值规范 ;从个体心理学的层面要求人们应当听从自身内在良心的呼唤而不是屈从于外在的权威的利益 ,实现自身的真实利益。本文最后分析了其理论的基本特点与理论得失。     

运动空间定向判断中的方向偏差及飞行惯性

模拟客体起飞和降落运动,探讨飞行场景中不同运动位置、不同意义客体和运动方向下个体运动空间定向判断能力。结果表明：(1)对降落运动轨迹的判断正确率显著低于起飞运动;(2)无意义客体偏高轨迹的判断正确率显著小于偏低轨迹,表现出方向偏差;(3)飞行场景影响方向偏差的表现形式,当飞机降落运动时,易将偏低路径判断为与预设轨迹相同,而飞机起飞运动时,易将偏高路径判断为相同,表明降落时飞机被知觉为会向斜下方越飞越低,而起飞时飞机会向斜上方越飞越高,表现出飞行惯性。结论：运动空间定向判断受到重力表征及个体知识经验等共同影响,具有认知可渗透性。     

Heteroscedasticity as a Basis of Direction Dependence in Reversible Linear Regression Models

Heteroscedasticity is a well-known issue in linear regression modeling. When heteroscedasticity is observed, researchers are advised to remedy possible model misspecification of the explanatory part of the model (e.g., considering alternative functional forms and/or omitted variables). The present contribution discusses another source of heteroscedasticity in observational data: Directional model misspecifications in the case of nonnormal variables. Directional misspecification refers to situations where alternative models are equally likely to explain the data-generating process (e.g., x → y versus y → x). It is shown that the homoscedasticity assumption is likely to be violated in models that erroneously treat true nonnormal predictors as response variables. Recently, Direction Dependence Analysis (DDA) has been proposed as a framework to empirically evaluate the direction of effects in linear models. The present study links the phenomenon of heteroscedasticity with DDA and describes visual diagnostics and nine homoscedasticity tests that can be used to make decisions concerning the direction of effects in linear models. Results of a Monte Carlo simulation that demonstrate the adequacy of the approach are presented. An empirical example is provided, and applicability of the methodology in cases of violated assumptions is discussed.