Student interracial interactions and perceptions of school as a community

Communally organized, as opposed to bureaucratically organized, schools are expected to provide significant advantages to students in terms of their cognitive and social growth. However, for students to avail themselves of these benefits, they need to experience school as a community. One factor that may influence whether students view their school as a functional community is the kind of teacher–student and peer interactions they observe or personally experience. This study examines the effects of positive and negative interracial interactions on whether students sense that their school is a community. Analysis of a large sample of elementary and secondary schools in a major urban school district show that positive interracial interactions contribute to students’ sense of school community while negative actions inhibit that sense.

Stimuli inevitably generated by behavior that avoids electric shock are inherently reinforcing.

A molecular analysis based on the termination of stimuli that are positively correlated with shock and the production of stimuli that are negatively correlated with shock provides a parsimonious count for both traditional discrete-trial avoidance behavior and the data derived from more recent free-operant procedures. The necessary stimuli are provided by the intrinsic feedback generated by the subject's behavior, in addition to those presented by the experimenter. Moreover, all data compatible with the molar principle of shock-frequency reduction as reinforcement are also compatible with a delay-of-shock gradient, but some data compatible with the delay gradient are not compatible with frequency reduction. The delay gradient corresponds to functions relating magnitude of behavioral effect to the time between conditional and unconditional stimuli, the time between conditioned and primary reinforcers, and the time between responses and positive reinforcers.     

The implications of low quality bicycle paths on gaze behavior of cyclists: A field test

Unlike for car driving and walking, the visual behavior during cycling is poorly documented. The aim of this experiment was to explore the visual behavior of adult bicycle users ‘in situ’ and to investigate to what extent the surface quality affects this behavior. Therefore cycling speed, gaze distribution and gaze location of five participants were analyzed on a high and a low quality bicycle track. Although there was no difference in cycling speed between the low and the high quality cycling path, there was an apparent shift of attention from distant environmental regions to more proximate road properties on the low quality track. These findings suggest that low quality bicycle tracks may affect the alertness and responsiveness of cyclists to environmental hazards.     

A BEHAVIORAL SYSTEM FOR ASSESSING AND TRAINING CARDIOPULMONARY RESUSCITATION SKILLS AMONG EMERGENCY MEDICAL TECHNICIANS

Many deaths from cardiopulmonary arrest can be prevented by the prompt and effective administration of cardiopulmonary resuscitation (CPR). In this study, we examined the standard training program for teaching CPR to emergency medical technicians (EMTs). We developed an alternative experimental program whereby the behaviors involved in CPR were assessed easily and in greater detail. This assessment provided the basis for a system in which effective CPR skills were reinforced and problems were corrected. Subjects who were trained in CPR according to this experimental program performed more effectively than subjects in the standard program. In addition, retention (maintenance) measures indicated that experimental subjects continued to perform well, often more effectively than professionally employed EMTs.     

Behavioral determinants of mothers' safety measures to prevent injuries of pre-school children

Home-related injuries are a major threat to pre-school children in the western world. In this study the behavioral determinants of 18 parental safety measures were assessed. To select behavioral determinants, the Attitude-Social influence-Self-efficacy/barriers model was used with the inclusion of variables from the Health Belief Model and the Protection Motivation Theory. A written questionnaire was completed by 1129 Dutch mothers of pre-school children. Most safety measures were explained (rather) well by the same set of determinants. Main determinants for adopting or not adopting a safety measure were the mother's belief in the necessity of the safety measure according to the child's age, her belief about her partner's opinion on the necessity and her belief about the success of taking the measure. Subsequent important determinants were the mother's belief about the inconvenience and instrumentality of the safety measure; the perceived susceptibility had a minor or moderate influence on most measures. This study did not indicate that more highly educated mothers were more knowledgeable about safety-related subjects. The theoretical implications of this study are discussed.     

Rewarding safety belt usage at an industrial setting: Tests of treatment generality and response maintenance

An incentive program to motivate seat belt use was implemented at a large munitions plant. Seat belt usage was assessed daily at an entrance/exit gate of the industrial complex when employees arrived for work in the morning and departed in the afternoon. During treatment incentive fliers, which prompted seat belt usage and gave belt wearers opportunities to win prizes, were distributed only in the afternoon. Seat belt wearing increased from baseline means of 20.4% and 17.3% during the morning and afternoon, respectively, to averages of 55.5% during afternoon departures and 31.1% during morning arrivals. During follow-up, mean belt use dropped almost to baseline levels. Categorizing vehicles according to driver sex and license plate number enabled a study of belt wearing practices of individuals, and revealed that the incentive program influenced some drivers to wear their seat belts during morning arrival when incentives were not distributed (i.e., treatment generalization) and during a follow-up period after the incentives were withdrawn (i.e., response maintenance).     

Evaluation of home-based programs for teaching personal safety skills to children

We evaluated the efficacy of a commercially available program, the Red Flag, Green Flag Prevention Book, used by parents to teach their children personal safety skills. Children's knowledge and skills regarding the prevention of sexual abuse and abduction were assessed prior to, during, and after training. In one group, training consisted of parents using the prevention book to train their children. Parents of children in the second group used the prevention book with added instructions. Children who did not achieve criterion performance after training with the prevention book received behavioral skills training provided by the experimenter. All children acquired safety skills following behavioral skills training. Follow-up probes 2 months later showed skill maintenance among the older children. Parents reported satisfaction with the procedures and no signs of behavioral or emotional problems following the follow-up probe.     

A behavioral analysis of incentive prompts for motivating seat belt use

The seat belt usage of drivers was observed at the entrance to two campus parking lots during morning arrival times. After 11 days of baseline, fliers which prompted seat belt wearing were handed to drivers of incoming vehicles. At one parking lot all fliers offered a chance to win a prize (noncontingent rewards); while at the second lot only those fliers given to seat belt wearers included a chance to win a prize (contingent rewards). After 24 consecutive observation days, these interventions were removed for 14 days of withdrawal. The recording of vehicle license plates enabled an analysis of belt usage per individual over repeated exposures to the experimental conditions. At the lot with the contingent reward intervention, mean belt usage was 26.3% during baseline, 45.7% during treatment, and 37.9% during withdrawal. At the noncontingent reward lot, the mean percentage of belt wearing was 22.2% during baseline, 24.1% during treatment, and 21.8% during withdrawal. The analysis of repeated exposures per individual verified that only contingent rewards influenced substantial increases in belt wearing, and showed that most of the influence occurred after the initial incentive prompt.     

INDUSTRIAL SAFETY HAZARD REDUCTION THROUGH PERFORMANCE FEEDBACK

A “feedback package” system, designed to prevent occupational accidents and to fit directly into the normal operations of an industrial organization, was analyzed. Eighteen hazardous conditions in six production departments were assessed during seven observation sessions over a 12-week period, plus four follow-up observations over 4 months. The “feedback package” was presented in multiple baseline fashion, across subjects (department supervisors). It consisted of presenting the supervisor with copies of observational data, accompanied by a note which congratulated good practices and suggested ways for improving safety conditions, along with occasional comments from a senior executive. The results indicated that during the feedback phase, hazard rates were lower and less variable than during the baseline phase. Baseline data were highly variable with peaks ranging from 20 to 55 hazards per department. Following intervention, hazard frequencies dropped by 60%, averaged across departments, with decreases ranging from 29% to 88%. During treatment, data stabilized, with the highest frequency reaching 33. A modified feedback system was implemented by the organization following termination of the study, validating the assumption that such a system would tend to maintain.     

Reduction of police vehicle accidents through mechaniically aided supervision

Tachograph recorders were installed in 224 vehicles of a metropolitan police department to monitor vehicle operation in an attempt to reduce the rate of accidents. Police sergeants reviewed each tachograph chart and provided feedback to officers regarding their driving performance. Reliability checks and additional feedback procedures were implemented so that upper level supervisors monitored and controlled the performance of field sergeants. The tachograph intervention and components of the feedback system nearly eliminated personal injury accidents and sharply reduced accidents caused by officer negligence. A cost-benefit analysis revealed that the savings in vehicle repair and injury claims outweighed the equipment and operating costs.