An infrared device for detecting locomotor activity

An electronic device for detecting locomotor activity in the home cage of small animals is described. The system involves a dense array of infrared (IR) beams designed to function as switches and capable of penetrating plastic walls of standard rodent cages without operational decrement. The device is reasonably inexpensive, is simple to calibrate, can be used with groups of animals, may be used for extended periods without maintenance, and is reliable with different cages.     

Basing the treatment of stereotypic and self-injurious behaviors on hypotheses of their causes.

Stereotypic and self-injurious behaviors are common forms of maladaptive responding demonstrated by severely handicapped persons. Various review papers suggest that no single treatment procedure is universally effective. Although there may be many reasons for this finding, one could be that people engage in these behaviors for various reasons, and that procedures that are incompatible with the cause of the behavior are unlikely to be effective. These studies also suggest many hypotheses for the development and maintenance of these behaviors, three of which are the self-stimulation, positive reinforcement, and negative reinforcement hypotheses. The purpose of this paper was to determine whether one of these hypotheses could be matched to the cause of the behavior and used as an effective treatment procedure. We therefore compared one hypothesis with one other for 3 subjects in a three-phase study. During baseline, data were taken in two classrooms for each subject, and a judgement was made about the hypothesis most likely to be related to the cause of the behavior. During the second phase, a treatment based on that hypothesis was used in one classroom, and a treatment based on another hypothesis was used in the second classroom. During the third phase, the treatment that was most effective in the second phase was used in both classrooms. Results showed that a successful treatment program can be developed on an hypothesis of why the behavior occurred during baseline. Results are discussed in terms of supporting the argument that treatment programs should be based on a functional analysis of the behavior in its environmental context.     

A simple infrared photocell device and its interface to an Apple computer

This paper describes a simple infrared photocell circuit that is inexpensive and easy to construct. The light source and detector are housed inexpensively and are focused so the light and detector may be separated over significant distances. The circuit may be used in a variety of conditions, including total darkness and bright fluorescent lighting, without having to readjust or recalibrate the circuitry. Output from the circuit may be used to drive other transistors or electromechanical relays. With minimal additional circuitry and hardware the signal may be interfaced with an Apple computer.     

An aftereffect to discrete stimuli producing apparent movement and succession

After observing the sequential flashing of two lights that produced either the perception of apparent movement or the perception of the succession of two stationary lights, the presentation of the lights in the opposite direction produced the perception of a more rapid apparent movement or of a more rapid succession of the light flashes. These aftereffects suggest the presence of neural structures for the discrimination of sequential changes in spatial position which are subject to adaptation and respond with decreased sensitivity to the repetitive presentation of the two lights in a given spatial direction. The results are interpreted to support the hypothesis that the perception of apparent movement involves the excitation of specific neural mechanisms selectively responsive to sequential changes in stimulus position. An alternative hypothesis is that the perception of apparent movement involves an inference based on the separate registrations of the position of a stimulus at one point in time and the position of that stimulus at an earlier point in time.     

An A-B-C model of habit disorders: hair-pulling, skin-picking, and other stereotypic conditions

Severe hair-pulling is characteristic of trichotillomania, an impulse control disorder not otherwise classified. Other pathological habits, including severe nail-biting and skin-picking, are also prevalent and are potentially diagnosable as stereotypic movement disorder. There is increasing awareness of the morbidity associated with these kind of habit disorders but, to date, relatively few randomized controlled trials of pharmacotherapy or psychotherapy have been undertaken. Advances in the understanding of the underlying cognitive-affective mechanisms driving stereotypies in animals and humans may ultimately lead to new approaches. An affect regulation, behavioral addiction, and cognitive control (A-B-C) approach is outlined to conceptualizing and managing these conditions.     

An interface for transmitting discrete response information to a computer

A circuit is described for interfacing response keys and other discrete inputs from psychological apparatus to a computer. Some of the unique features are: high noise immunity, the ability to transmit data over long distances, and electrical protection of the computer from accidental and potentially catastrophic high voltage inputs.     

An instructional package to teach communication behaviors in a classroom setting

An instructional package consisting of modeling, written and behavioral rehearsal, and feedback was used to teach communication behaviors (simple sentence responses, information responses, and eye contact) to 17 emotionally handicapped students, ages ranging between 11 and 17 years. A multiple baseline analysis indicated that the communication behaviors targeted for training increased significantly following implementation of the instructional package. These behaviors also generalized across settings and nontrained questions and were maintained across time. Finally, the average amount of training time required for each subject was 2 hours, indicating that the use of the instructional package in a classroom setting was economical. These results show that communication behaviors can be delivered effectively and economically in a classroom setting.     

An inexpensive infrared detector to verify the delivery of food pellets

The reproducibility of experimental outcomes depends on consistent control of independent variables. In food-maintained operant performance, it is of utmost importance that the quantity of food delivered is reliable. To that end, some commercial food pellet dispensers have add-on attachments to sense the delivery of pellets. Not all companies, however, offer such add-ons. Aside from availability, cost and temporary reduction in throughput may be a problem for smaller labs. The present paper outlines our recent development of a simple, inexpensive infrared device to detect and confirm the delivery of pellets. The in-line construction of the detector routes the falling pellet through a barrel so that it passes between an infrared emitter and receiver. The circuitry was designed to be compatible with all commercially available behavioral measurement systems, and so may be retrofit to any existing system. Our tests with the detector so far have shown that it is 100% accurate in detecting pellet delivery. The individual unit cost is approximately 25 dollars. The low cost and versatility of the device offer an easy method to ensure the integrity of food delivery in operant settings.     

An ecological stance on risk and safe behaviors in children: The role of affordances and emergent behaviors

Unintentional injuries are a major cause of disability and death among children. Initial strategies to address child safety issues have primarily either focused on the environment, trying to identify “risk environments”, or on the individual, trying to identify “at risk children”. More recently, the interaction between child and environment is starting to be addressed in order to enhance the understanding of childhood injuries. The present review suggests a framing of these studies in ecological theory, which implies that children with certain characteristics perceive certain affordances in the environment. In this context, risk may be considered a relational concept. The literature on risk prevention is reviewed and the role of caregivers in managing affordances is emphasized.     

组织公民行为与反生产行为的互动关系：一个基于情绪与认知整合框架的阐释

传统观点认为, 组织公民行为和反生产行为是同一连续体的对立两级或者负相关的独立二维结构。但近期研究表明, 这二者关系并非那样简单, 在特定情境下它们也许存在一种适度的正相关性。首先, 回顾组织公民行为与反生产行为的影响因素, 以及这二者关系的认知演变; 然后, 基于情绪与认知整合框架, 采用资源守恒理论和道德平衡理论探讨组织公民行为与反生产行为的互动关系; 最后, 对未来研究方向进行了展望, 如通过实证研究探索二者互动关系的边界机制、采用多种研究方法验证这二者之间互动关系、基于潜增长模型探讨这二者关系的动态变化、以及深入探讨这二者互动关系的管理实践策略。     

Conflict behaviors and their relationship to popularity

This study examined conflict behaviors (self, other) among 127 Turkish college students. Differences in five conflict behaviors (forcing, avoiding, accommodating, compromising, and collaborating) were then explored in relation to popularity and unpopularity. Results indicated that the students engaged in more avoiding and compromising behaviors, while perceiving more forcing behavior in others. Further, the unpopular group was found to engage in more compromising behavior, and perceived more forcing behavior in others, as compared with the popular group. Constructive and destructive conflict strategies, and their implications for popularity, are discussed.     

Organizational socialization tactics and newcomer proactive behaviors: An integrative study

The purpose of this study was to examine the relationship between organizational socialization tactics, newcomers’ self-efficacy, proactive behaviors, and socialization outcomes. Based on a sample of 140 co-op university students who completed surveys at the end of their work term, the results indicated that newcomers’ self-efficacy and institutionalized socialization tactics were positively related to newcomer proactive behaviors. The results also indicated that newcomer proactive behaviors partially mediated the relationship between their self-efficacy and organizational socialization tactics with a number of proximal and distal socialization outcomes. Furthermore, feedback-seeking and information-seeking moderated the relationship between socialization tactics and several socialization outcomes. Institutionalized socialization tactics were more strongly related to socialization outcomes for newcomers who engaged in less feedback-seeking and information-seeking behavior. These results support an interactionist approach to organizational socialization in which newcomers’ self-efficacy, proactive behavior, and organizational socialization tactics all contribute to newcomers’ adjustment and socialization.     

The relevance of specific conversational behaviors to ratings of social skill: An experimental analysis

Research on the social effectiveness of specific conversational behaviors is reviewed and a new study is presented. Eight versions of the same tape-recorded conversation between a man and a woman were prepared in a 2×2×2 design, where the woman systematically varied her conversation either high or low on questions, compliments, and 4-sec latencies. Subjects listened to one of these tapes and rated the female's social skill. Results of the major social skill variable showed that high questions and high compliments elicited higher skill ratings. The effect of low latencies was only marginally significant. While other factors such as personal appearance or self-evaluation differences may also be important, this study suggests that it may be valuable to include assessment and training relevant to compliments and questions (and possibly latencies) in programs for women who are socially anxious.