Antecedent effects of observing peer play

The relative reinforcing value of toys was assessed in the absence of, and immediately following, participant observation of a peer manipulating one of the toys. Preference assessments were used to identify preference hierarchies. Reinforcer assessments were conducted with a high-preference item, a low-preference item, and a control. Each participant allocated responding toward the high-preference item during baseline. When reinforcer assessment sessions were preceded by a peer observation period, 3 of the 4 participants shifted allocation to the toy manipulated by the peer. The 4th participant shifted allocation only when the high-preference stimulus was replaced with a medium-preference stimulus. These data suggest that, among preschoolers, response allocation is influenced by observations of peers playing.     

心房颤动的外科治疗策略

阵发性心房颤动（房颤）需要“局灶触发”,其触发灶一般位于肺静脉开口附近,持续或永久性房颤同时需要“局灶触发”和心房的“异常基质”两个因素。也有人认为持续或永久性房颤根本不需要触发灶。因此,可靠的肺静脉隔离可以治愈绝大部分阵发性房颤的患者,而持续或永久性房颤则需要进行迷宫手术或与其相似的肺静脉隔离基础上的心房附加隔离线。近年来外科消融发展很快,其原因是该方法可达到与迷宫手术相似的高成功率,而并发症低以及手术时间短则明显优于迷宫手术。外科消融可采用的能量很多,有射频、微波、冷冻等。因为外科一般为永久性房颤的患者,肺静脉开口加左房后壁消融是其基本的消融线。考虑到没有心脏器质性疾病的房颤本身是一种良性心律失常,同时外科消融可能出现的某些重并发症,例如左房食管漏、冠状动脉损伤等,不推荐广泛应用外科消融来治疗孤立的房颤。但对需要进行心脏外科手术的患者合并房颤,无论是永久或阵发性房颤,均应常规进行外科治疗。     

EFFECTS OF STIMULANT MEDICATION UNDER VARIED MOTIVATIONAL OPERATIONS

We evaluated the evocative effects of four conditions (high‐ and low‐preference activities, low and divided attention) and stimulant medication on the behavior of a 16‐year‐old boy with attention deficit hyperactivity disorder and moderate mental retardation. All behavior (activity engagement, activity changes, inappropriate touching, rude behaviors, and physical aggression) improved with stimulant medication in most conditions, but undesirable behaviors were not reduced to acceptable levels in all conditions. This finding suggests that stimulant medication may be a valuable adjunct to function‐based interventions.     

Producing mands in concurrent operant environments

This study examined strategies designed to increase the rate of targeted, low-probability mands in a concurrent operant environment. We examined the effects of schedule manipulations, prompt manipulations, motivating operation manipulations, and combined behavioral process manipulations. Increases in target mands were produced for all 8 participants. Schedule manipulations were effective in producing increased rates of targeted mands for 3 of 8 participants, whereas prompt manipulations were effective for 4 of 8 participants. Motivating operation manipulations were effective in producing increased rates of targeted mands for 2 of 8 participants and combined behavioral process manipulations were effective for the single participant exposed to the combination.     

Effects of a motivating operation manipulation on the maintenance of mands

We assessed the maintenance of newly acquired mands under presession reinforcer access (reinforcer efficacy abolished) and no presession reinforcer access (reinforcer efficacy established) conditions with 3 children with autism spectrum disorder. Results suggested that the no presession access condition established the value of the reinforcer and evoked responding relative to the presession access condition. Results are discussed in the context of implications for assessing maintenance of previously acquired skills.     

NONCONTINGENT REINFORCEMENT: A FURTHER EXAMINATION OF SCHEDULE EFFECTS DURING TREATMENT

We conducted 2 studies to determine whether dense and thin NCR schedules exert different influences over behavior and whether these influences change as dense schedules are thinned. In Study 1, we observed that thin as well as dense NCR schedules effectively decreased problem behavior exhibited by 3 individuals. In Study 2, we compared the effects of 2 NCR schedules in multielement designs, one with and the other without an extinction (EXT) component, while both schedules were thinned. Problem behavior remained low as the NCR schedule with EXT was thinned, but either (a) did not decrease initially or (b) subsequently increased as the NCR schedule without EXT was thinned. These results suggest that dense schedules of NCR decrease behavior by altering its motivating operation but that extinction occurs as the NCR schedule is thinned. The benefits and limitations of using dense or thin NCR schedules are discussed.     

不同5-HT3受体拮抗剂预防腹腔镜术后恶心呕吐的临床观察

观察使用不同5-HT3受体拮抗剂预防全麻下腹腔镜手术术后恶心呕吐的临床效果。选择160例气管内插管全身麻醉下腹腔镜手术,随机分四组,每组40例,手术结束前30min分别静脉注射昂丹司琼4mg（A组）;托烷司琼2mg（B组）;格拉司琼3mg（C组）;D组为对照组。记录术后2h、6h、12h、24h患者恶心、呕吐出现的例数。结果四组患者术后恶心呕吐的发生率是一个逐渐下降的趋势,A、B、C三组与D组相比较有显著性差异（P〈0．05）;术后2h、6h、12hB组与A组、C组相比较有显著性差异（P〈0．05）;而术后24hA、B、C三组差异无统计学意义,A、B、C三组抑制恶心呕吐的有效率分别为67．5％、87．5％和70．0％,与对照组比较差异有统计学意义（P〈0．05）,随访患者24h内无与药物相关的不良反应。结论：三种药物都能有效地预防术后恶心呕吐,但12h内托烷司琼的有效性更为明显。     

Luther on vocation,by Gustaf Wingren: A twenty‐first‐century theological‐literary reading

In this article, the author offers a critical, appreciative appraisal of The One Mediator, Luther on Vocation, by Gustaf Wingren (English translation, 1957), which continues to be a seminal text for understanding Luther's teaching on the theme of vocation. The author points out that the reader needs to keep in mind both the difference between Luther's world of the sixteenth century and the world of the early twenty‐first century, and the sobering reality that pursuing the neighbor's good continues to be an essential, definitive calling that every Christian has. Further, the author calls attention to Wingren's indisputable reminder that, for Luther, vocation is about the way of the Christian in human society. That way of being in pursuit of the neighbor's good is consequent upon the forgiveness of sins, which God bestows on the sinner who receives it through faith in Jesus Christ. It is God alone who is the decisive actor, even though in the former—seeking the neighbor's good—God's work is hidden; that is, the human actor is a “mask of God.”