Adjustment of cognitive control to the frequency of dual-task interference

ABSTRACT

This study explored whether the control mechanisms recruited for optimising performance are similar for dual-task and interference-task settings. We tested whether the frequency of appearance of a secondary task resulted in an adjustment of anticipatory and reflexive forms of attentional control, as has been observed with other interference tasks (e.g. stroop and flanker). The results of two experiments demonstrated a proportion congruency effect (PCE): when a secondary task frequently appeared, primary task performance was slower. Additionally, there was a relative slowdown of dual-task performance in blocks wherein the secondary task appeared infrequently compared to blocks wherein it appeared frequently. However, this slowdown occurred when the primary task entailed a low level of control (Experiment 1) but was absent when it demanded a high level of control (Experiment 2). Overall, the results suggest that level of control can be adjusted to task demands related to the frequency of the secondary task.     

Effects of social context, reinforcer probability, and reinforcer magnitude on humans' choices to compete or not to compete.

In the first two experiments, subjects' choices to earn points (exchangeable for money) either by competing with a fictitious opponent or by not competing were studied. Buskist, Barry, Morgan, and Rossi's (1984) competitive fixed-interval schedule was modified to include a second response option, a noncompetitive fixed-interval schedule. After choosing to enter either option, the opportunity for reinforcers became available after the fixed-interval's duration had elapsed. Under the no-competition condition, points were always available after the interval had elapsed. Under the competition condition, points were available based on a predetermined probability of delivery. Experiments 1 and 2 examined how reinforcer probabilities and reinforcer magnitudes affected subjects' choices to compete. Several general conclusions can be made about the results: (a) Strong preferences to compete were observed at high and moderate reinforcer probabilities; (b) competing was observed even at very low reinforcer probabilities; (c) response rates were always higher in the competition component than in the no-competition component; and (d) response rates and choices to compete were insensitive to reinforcer-magnitude manipulations. In Experiment 3, the social context of this choice schedule was removed to determine whether the high levels of competing observed in the first two experiments were due to a response preference engendered by the social context provided by the experimenters through instructions. In contrast to the first two experiments, these subjects preferred the 60-s fixed-interval schedule (formerly the no-competition option), indicating that the instructions themselves were responsible for the preference to compete. This choice paradigm may be useful to future researchers interested in the effects of other independent variables (e.g., drugs, social context, instructions) on competitive behavior.     

目标结构与学习动机

本文概述了目标结构理论的形成及发展,并进一步论述了在教学中不同的目标结构,导致学生间不间的相互关系,从而使学生形成不同的学习动机,取得不同的学业成就。竞争目标结构激发的是能力中心的动机系统;个体化目标结构激发的是任务掌握的动机系统;合作目标结构激发的是道德中心的动机系统。由此,我们认为在当前的教学实践中应重视合作目标结构的建立。     

When distorted logos are recognized as original? The role of the DRM procedure in detection of immediate and delayed consumers’ errors

IntroductionTo deal effectively with the market, one must create a distinct logo from competing logos. However, it is not uncommon that similarities between logos of various companies are enough to mislead consumers. This paper shows how the DRM paradigm as well as prototype theories can be used to investigate correct and erroneous recognitions of distorted familiar and unfamiliar logos in short- and long-term memory.MethodThe modified hybrid DRM procedure was adopted to test brand images that were distorted but perceptually similar. Participants performed the experimental task in which short- and long-term memory for logos were tested.ResultsThe results demonstrated no difference in memory performance between familiar and unfamiliar logos after a short delay. However, a discrepancy between recognizing both types of logos arose in long term memroy toward more errors for familiar images.ConclusionsThe results confirm that the DRM procedure can be successfully used by marketers as a potential tool in either detecting unfair competition or launching new brands.     

Parent-like spokesperson for campaigning an anti-plastic straw movement to young adults: Is it effective?

Parental communication is still relatively meaningful in Asian families with hierarchical, vertical, and authoritative relationships. Meanwhile, children's pro-environmental behaviour in emerging Asian nations tends to be passive, leading to a need for intervention from the closest parties, often the parent, whose familial role in green communication has not been examined. This study uses social learning theory to examine the interplay of parent-like spokespeople and message appeals in affecting young adults' cognitive and emotional responses, which is expected to influence the ad liking and believability of green advertisements and switching intention to green products, such as eco-friendly straws. A laboratory experiment was conducted with 240 subjects. The results showed that the frame of a father-like figure conveying a hope appeal generated the greatest enthusiasm and argument quality for young adults. Mother-like figures speaking a fearful message frame were the best generator for young adults' anger and threat appraisal. Ad liking was significantly impacted only by a mother-like spokesperson who spoke a fearful appeal mediated by anger and a father-like spokesperson who delivered a hope appeal mediated by argument quality. Young adults' willingness to switch to eco-friendly straws was indirectly influenced by the interaction effect of a mother-like spokesperson and fear appeal type mediated by ad believability.     

Relationship between maternal aggression and maternal care in the rat

Aggression among female rats is almost entirely confined to the period of late pregnancy and lactation. Behaviorally it is similar to the aggression of males including piloerection and lateral attacks, but it differs in its function. Unlike male aggression which serves to establish a social hierarchy and a territory, i. e., is competitive, maternal aggression is protective, i. e., it serves to prevent predation of the mother's offspring. In this respect it is closely related temporally and causally to maternal care; if the offspring are removed maternal aggression wanes almost immediately–its function no longer exists! Studies on aggression by mothers, among rats, from the author's laboratory are reviewed and comparisons made with maternal care. As noted, maternal aggression and maternal care are closely related during the cycle of maternal behavior and they share a similar hormonal basis and possibly the effect of uterine stimulation, but maternal care requires prolactin and the decline of progesterone while maternal aggression appears independent of pituitary hormones and does not require a decline in progesterone. Maternal aggression like maternal care appears to be organized into a hormonal phase, during pregnancy, parturition, and for about a week postpartum and a nonhormonal phase thereafter. Bilateral radiofrequency lesions of the lateral midbrain peripeduncular nucleus (PPN) produce deficits in maternal aggression if made on lactation day 7 (L7), but not earlier, without producing significant deficits in maternal behavior. Experiments showed that the PPN does not mediate hormonally stimulated maternal aggression; it appears to mediate only nonhormonally stimulated maternal aggression. Studies on the role of pregnancy hormones on long-term retention of maternal aggression and the role of olfaction in maternal aggression are also reviewed. © 1994 Wiley-Liss, Inc.     

基于用户动态信息加工的信息流广告回避机制与重定向策略

信息流广告飞速发展的同时用户广告回避愈发普遍,然而传统广告回避结论无法平移到该情境。本研究基于用户动态的信息加工视角,试图探讨(1)动态信息加工状态下(收敛式vs发散式)产生广告屏蔽和广告跳过行为的内在机制;(2)采用归因引导重定向策略,挖掘用户屏蔽广告的“残留效应”所带来的信号价值;(3)采用广告凸显重定向策略,突破用户跳过广告的“学习效应”造成的负面影响。丰富现有理论的同时,为信息流广告的响应式优化提供理论和决策支持。     

Anxiety,hormonal responses,and coping during a judo competition

Competitive situations induced hormonal changes, depending on the outcome, victory or defeat. This study aimed to investigate the salivary testosterone (T) and cortisol (C) and the mental state responses to a real judo championship. Data about individuals’ anxiety levels, strategies of coping, and patterns of behavior were thus collected. The relationship between hormonal changes and psychological variables were also analyzed. Our results showed a C response to competition, which was especially characterized by an anticipatory rise. Depending on outcome, results did not show statistically significant different C responses. The T values noted after the last fight were significantly greater in the losers than those obtained in the winners. Hormonal response did not show a relationship with psychological variables depending on the outcome. Losers showed just before the first fight an elevated cognitive anxiety, accompanied by low self‐confidence. Moreover, they were characterized by type B behavior. Types of coping strategies also differentiated losers from winners. Finally, even if no relationships between hormonal and psychological variables depending on the outcome were found, our results showed that state and trait psychological variables, as well as the coping strategies, must be taken into account to better understand the response to competitive situations. Aggr. Behav. 27:55–63, 2001. © 2001 Wiley‐Liss, Inc.     

Aggression,self-confidence,and cardiovascular reactions in competitive performance in adolescent boys

Interactions between suggested risk factors for the development of coronary heart disease (namely aggression, competitive performance, and cardiovascular reactions) were studied in 36 adolescent boys. Different manifestations of aggression were measured using a structured interview, the aggression-impatience factor of the MYTH test, and observation. Self-confidence was assessed by means of an interview. The performance tests used were the Stroop Color Word test and the P-factor test. Cardiovascular reactions were measured using an automatic noninvasive sphygmomanometer with a continuous recording system. Results showed that the significance of aggression in performance or competition cannot be evaluated separately; aggression in itself had an injurious effect on performance, but when combined with high self-confidence it resulted in a high level of performance. High cardiovascular reactivity was related to competitiveness rather than aggression. The results emphasize that before intervention programs for behavioral risk factors of coronary heart disease are planned, there are many questions to answer.     

Through rose-tinted glasses: How inducing and resolving curiosity makes consumers less skeptical and improves their product evaluations

Research indicates that in general, curiosity leads to more intense processing of an advertisement, which might result in a more skeptical response toward a persuasive message. However, we propose the opposite and argue that a process of evoking curiosity toward a stimulus in the first step (with the creation of an information gap) and resolving it in the second step creates a positive affective experience. Upon receiving curiosity-resolving information after becoming curious, consumers are less skeptical toward the advertised product, which leads to a more favorable attitude and a higher purchase intention. Based on four studies, we demonstrate curiosity's skepticism-reducing effect, its downstream consequences, and the underlying mechanism of positive affect. We show that this curiosity-stimulating way of information disclosure caused the effect instead of the information itself, which remained constant. The effects occur for integral curiosity, directed at the focal product, and for incidental curiosity, elicited by an unrelated stimulus. These results contribute to understanding consumer responses to curiosity-evoking advertisements, which are widespread, and provide implications for consumer psychologists, practitioners, and policy makers.