The Cost-Reward Model of Helping Behavior: A Nonconfirmation1

A field experiment was designed to test several predictions derived from the Piliavin and Piliavin cost-reward model of helping behavior. Female and male subjects' reported intent to help a hemophiliac in a nearby hospital was unrelated to the costs for helping, the costs for not helping, and the order in which the subjects received the costs' manipulations. The obtained rates of helping were also unrelated to whether or not subjects reported having donated previously. Failure to obtain the predicted results is discussed.     

Empathy-motivated helping: the moderating role of group membership

In this article, the authors present two laboratory experiments testing a group-level perspective on the role of empathy in helping. Experiment 1 tested the authors' predictions in an intercultural context of helping. Confirming their specific Empathy x Group Membership moderation hypothesis, empathy had a stronger effect on helping intentions when the helper and the target belonged to the same cultural group than when they belonged to different groups. Experiment 2 replicated these findings in a modified minimal group paradigm using laboratory-created groups. Moreover, this second experiment also provides evidence for the hypothesized psychological mechanisms underlying the empathy-(ingroup) helping relationship. Specifically, analyses in the ingroup condition confirmed that the strength of the empathy-(ingroup) helping relationship systematically varied as a function of perceived similarities among ingroup members. The general implications of these findings for empathy-motivated helping are discussed.     

The attribution of arousal and emergency helping: A bidirectional process

J. M. Piliavin, J. A. Piliavin, and J. Rodin (1969, Journal of Personality and Social Psychology, 13, 289–299) and J. A. Piliavin, J. F. Dovidio, S. L. Gaertner, and R. Clark (1981, Emergency intervention, New York, Academic Press) proposed that physiological arousal is causally related to a bystander's response to an emergency. Examining this proposition, the current research investigated the hypothesis that residual arousal from an extraneous event has the capacity to facilitate as well as to inhibit bystander intervention during an emergency depending on whether the extraneous arousal is attributed to the emergency or whether the emergency-generated arousal is attributed to the extraneous event. Specifically, it was predicted that during an Unambiguous emergency, extraneous arousal from the prior performance of physical exercise would be attributed to the emergency and thus facilitate bystander responsiveness. During an Ambiguous emergency, however, emergency-generated arousal would be attributed to the prior performance of physical exercise and thus bystander responsiveness would be inhibited by higher levels of arousal. Fifty-four male subects performed no, moderate, or high levels of exercise before exposure to an Unambiguous or Ambiguous emergency. Results indicated that during the Unambiguous emergency, higher levels of prior exercise facilitated helping. However, when the emergency was Ambiguous, high levels of exercise tended to inhibit bystander responsiveness. Correlational analysis of telemetered heart rates and latency to intervene corroborated the above pattern of findings.     

The costs of changing the representation of action: response repetition and response-response compatibility in dual tasks

In 5 experiments, the authors investigated the costs associated with repeating the same or a similar response in a dual-task setting. Using a psychological refractory period paradigm, they obtained response-repetition costs when the cognitive representation of a specific response (i.e., the category-response mapping) changed (Experiment 1) but benefits when it did not change (Experiment 2). The analogous pattern of results was found for conceptually similar (i.e. compatible) responses. Response-response compatibility costs occurred when the cognitive representations of the compatible responses were different (Experiments 3A & 3B), but compatibility benefits occurred when they were the same (Experiment 4). The authors interpret the costs of repeating an identical or compatible response in terms of a general mechanism of action selection that involves coding the task-specific meaning of a response.     

Prosocial consequences of imitation

Research has shown that helping behavior can be primed easily. However, helping decreases significantly in the presence of inhibition cues, signaling high costs for the executor. On the other hand, multiple studies demonstrated that helping behavior increases after being mimicked. The present study investigated whether imitation still increases helping when more substantial costs are involved. Helping behavior was operationalized as the willingness to accompany the confederate on a 15-20 minute walk to the train station. Results show that even in the face of these high costs, participants who were mimicked agreed more often to help the confederate than participants who were anti-mimicked. These findings suggest that mimicry not only makes people more helpful when it comes to small favors, but also allows them to ignore the substantial costs possibly involved in helping others.     

基于成本最小化信息的社会性意图识别：来自脑电和行为的证据

与已有研究着重考察如何识别客体导向性意图(动作以物理对象为目标, 而不涉及其他人)不同, 本研究对人们如何识别社会性意图(动作以指向社会主体为目标以影响对方的交互行为)进行了探讨。基于两交互主体在整体层面应遵循效用最大化的分析, 提出当A协助B达成目标状态所需要的成本小于B单独实现该目标状态所需要的成本时(简称为成本最小化信息), 其可被识别为具有社会性意图。通过在B面前设置栅栏的方法操纵成本最小化信息, 以指示不同意图类型的脑电μ抑制程度、对不同变化的敏感性(辨别力)为指标, 对该假设进行了检验。结果显示, 相比客体导向性意图的控制条件(即A将目标物苹果放置在石头前), 当A将目标物苹果放置在被栅栏挡住的B前, 其动作可减少B单独获取该苹果的动作成本, 即符合成本最小化条件时, μ的抑制程度更高(实验1), 且对结构改变(某两个动画中充当相同角色的智能体互换)的辨别力更强, 但对角色交换(某个动画中两个智能体的角色交换)的辨别力更弱(实验3a); 而当栅栏不存在时, 虽然A的运动路径与实验1相同, 但A将苹果放置在B前的成本大于B自身获取苹果的成本, 即不符合成本最小化条件, 条件间μ抑制的差异消失(实验2), 且对不同动作模式中变化的辨别相当(实验3b)。鉴于已有研究表明社会性意图所诱发的μ抑制强于客体导向性意图, 且人们对存在社会性意图的两个智能体间的结构改变更容易辨别, 而对角色交换不敏感, 故上述结果揭示, 两个个体的行为是否满足成本最小化影响人们对动作意图的识别, 支持成本最小化信息是社会性意图识别线索的观点。     

Observer perceptions of moral obligations in groups with a history of victimization

The authors investigated when observers assign contemporary group members moral obligations based on their group's victimization history. In Experiment 1, Americans perceived Israelis as obligated to help Sudanese genocide victims and as guiltworthy for not helping if reminded of the Holocaust and its descendants were linked to this history. In Experiment 2, participants perceived Israelis as more obligated to help and guiltworthy for not helping when the Holocaust was presented as a unique victimization event compared with when genocide was presented as pervasive. Experiments 3 and 4 replicated the effects of Experiment 1 with Cambodians as the victimized group. Experiment 5 demonstrated that participants perceived Cambodians as having more obligations under high just world threat compared with low just world threat. Perceiving victimized groups as incurring obligations is one just world restoration method of providing meaning to collective injustice.     

The emotional cost of charitable donations

Donations in support of a charitable cause can create a conflict between moral intuitions (e.g., fulfilling moral obligations and helping as many individuals in need as possible) and the cost entailed by following one's moral intuitions (e.g., spending money). The present paper investigates this conflict by putting people in a situation in which they must choose whether to help three women by giving more money or help one woman by giving less. In addition, the paper uses the attraction effect paradigm to counteract the single victim effect and reduce the conflict. Experiment 1 demonstrates that in a two-alternative context the majority of participants choose to help one woman by giving €150 instead of helping three women by giving €450. Experiment 2 replicates this finding and highlights the role of emotion regulation strategies in the management of the emotional conflict arising in the two-alternative condition. In both studies, the introduction of a third, dominated alternative reduces the conflict and makes it easier to choose the programme asking for a higher donation and helping three women. Implications for charitable donations and the role of the conflict between moral intuitions and economic costs are discussed.     

Age differences in the selection of mental sets: the role of inhibition, stimulus ambiguity, and response-set overlap

Switching between tasks leads to response-time (RT) costs at switch points (local switch costs) and often to RT costs at no-switch transitions that occur in the context of a task-switching block (global set-selection costs). With trial-to-trial cuing of tasks, moderate age effects were obtained for local switch costs, but large age effects were obtained for global selection costs. In Experiment 1, set-specific inhibition was found to be at least as large in old as in young adults, thus ruling out an inhibition deficit as a reason for age differences in global costs. In Experiment 2, large age differences in global costs were limited to conditions of ambiguous stimuli and full response-set overlap. This pattern of results suggests a greater reliance on set-updating processes in old than in young adults. The role of these processes is to ensure unambiguos internal control settings when ambiguity arises from stimuli and response specifications.     

Social dominance‐based threat reactions to immigrants in need of assistance

The present investigation examined how individuals higher in social dominance orientation (SDO) react to experimentally induced intergroup threat in terms of support for helping immigrants. Participants read editorials describing an incoming immigrant outgroup posing realistic threats (to tangible resources and well‐being), symbolic threats (to values and traditions) or no threats. Participants higher in SDO exhibited greater resistance to helping immigrants upon exposure to realistic, symbolic, (Experiments 1 and 2), or combined realistic–symbolic (Experiment 2) intergroup threats, but not when the same immigrants posed no threats. In Experiment 2, SDO exerted indirect effects on modern prejudice through both heightened infra‐humanization and intergroup anxiety, with modern prejudice itself predicting greater resistance and indifference to helping immigrants. Moderated mediation analyses revealed strongest SDO‐infra‐humanization relations under conditions of symbolic threat. Implications for prejudice‐reduction interventions are considered. Copyright © 2010 John Wiley & Sons, Ltd.     

Helping on the Highway: The Effects of Dependency and Sex1

A series of three naturalistic field experiments are reported which investigated the norm of social responsibility by examining the effects of dependency and sex on helping. Experiment I examined the effect of physical disability on the likelihood of passing motorists helping with a flat tire. Females were helped significantly more than males, but the dependency manipulation was only minimally effective. In Experiment II the same disability cues were used in a hitchhiking context. Again females were helped significantly more than males, but surprisingly the dependency cues significantly reduced the number of ride offers. Experiment III used hitchhiking as the behavior of interest, but this time the dependency cues involved a disabled vehicle. This dependency manipulation significantly increased help offers. In addition, females were again helped significantly more than males. In all three experiments, almost all help offers were made by males. Other variables that appeared to influence helping rates were the perceived cost of helping, the attractiveness of the solicitors, and whether they were seen as responsible for their state of dependency. The present field results complemented previous laboratory work on the Same variables.     

The emotional cost of charitable donations

Donations in support of a charitable cause can create a conflict between moral intuitions (e.g., fulfilling moral obligations and helping as many individuals in need as possible) and the cost entailed by following one's moral intuitions (e.g., spending money). The present paper investigates this conflict by putting people in a situation in which they must choose whether to help three women by giving more money or help one woman by giving less. In addition, the paper uses the attraction effect paradigm to counteract the single victim effect and reduce the conflict. Experiment 1 demonstrates that in a two-alternative context the majority of participants choose to help one woman by giving €150 instead of helping three women by giving €450. Experiment 2 replicates this finding and highlights the role of emotion regulation strategies in the management of the emotional conflict arising in the two-alternative condition. In both studies, the introduction of a third, dominated alternative reduces the conflict and makes it easier to choose the programme asking for a higher donation and helping three women. Implications for charitable donations and the role of the conflict between moral intuitions and economic costs are discussed.     

Spill‐over effects of intermittent costs for defection in social dilemmas

This research investigates the role of intermittent monetary costs in restraining individuals from defection in social dilemmas. In Experiment 1, 104 car owners made fictitious choices between a slow and a fast travel mode in the context of a continuous social dilemma. There were four different conditions of monetary costs for choosing the fast mode (defection): no cost, low cost, high cost to self, or high cost to others. Participants defected most when there was no cost and least when they themselves were charged a high cost. A spill‐over effect was obtained such that when others were charged a high cost to defect, defection rates were lower than under no cost. Experiment 2 used 36 undergraduates as participants in an iterated decision task with real groups. The results replicated the major results of Experiment 1. Furthermore, whereas prosocials were strongly affected by intermittent costs for defection (i.e. showed large spill‐over effects), proselfs seemed to be unaffected. Possible explanations of this interaction effect between social value orientation and intermittent punishment for defection are provided. Copyright © 2002 John Wiley & Sons, Ltd.     

Abstract construals make the emotional rewards of prosocial behavior more salient

Although previous research has shown that helping others leads to higher happiness than helping oneself, people frequently predict that self-serving behavior will make them happier than prosocial behavior. Here, we explore whether abstract construal – thinking about an event from a higher level, distanced perspective – influences predictions about how rewarding prosocial actions will be for people’s own well-being. In Experiment 1, Hurricane Katrina volunteers who adopted an abstract construal predicted that their efforts would be more rewarding than did volunteers who adopted a concrete construal. Experiment 2 provided a conceptual replication with a hypothetical donation scenario; people who adopted an abstract rather than concrete construal predicted that giving more money would be more rewarding than giving less. These findings suggest that people are more likely to appreciate the emotional benefits of prosocial actions when they adopt high-level construals than when they adopt low-level construals.     

Nonconscious goal pursuit and the surmounting of physical and social obstacles

The ability to overcome obstacles is widely regarded as a sign of motivation. Building on recent research on nonconscious goal pursuit, two experiments are presented that test whether activating the goal of helping outside people's awareness by exposure to social stereotypes causes them to overcome physical and social obstacles. Experiment 1 established that although overall participants were less inclined to pick up a tissue that was accidentally dropped on the floor by the experimenter when this tissue was dirty instead of clean, they were able to overcome their aversion toward picking up the physical object when they were primed with the mental representation of a social group (e.g., nurse) containing the goal of helping. Results were replicated in Experiment 2, in which participants had to overcome a social obstacle by providing feedback to a student of a negatively evaluated ethnic minority group, and explanations in terms of demand characteristics and mood were excluded. Implications for the literature on nonconscious goal pursuit are briefly discussed. Copyright © 2007 John Wiley & Sons, Ltd.     

Eliminating the cost of task set reconfiguration

With insufficient time to fully prepare for a switch in task, a deterioration in performance on the first trial of a new task would be expected. The interest of researchers has been captured by the residual switch costs that, surprisingly, remain despite sufficient time to prepare. We used avery simple task to investigate the costs to reaction time and accuracy associated with changing between two different instructional sets every eight trials. Subjects responded to left and right visual targets by making either spatially compatible or incompatible eye movements (Experiment 1) or buttonpress responses (Experiment 2). The subjects were cued as to whether to make the compatible or the incompatible response by the color of a border appearing on the perimeter of the display. In cases in which the subject alternated between making pro- and antisaccades, the large costs to reaction time and accuracy at the short cue-target stimulus onset asynchrony were completely eliminated when sufficient time was provided to prepare for the switch. This complete elimination of residual switch costs was not obtained when the same alternation was applied to manual responses. This pattern of results links residual costs to response selection processes and suggests that they are not a necessary component of the switch process. We propose that the elimination of "stubborn" residual switch costs is rooted in our use of a hypercompatible task (making saccades toward targets) that places minimal demands on response selection.     

Modality-specific effects in bilingual language perception

ABSTRACT

Language switching typically leads to language switch costs. Previous studies demonstrated that production-based language switching often results in reduced costs when the languages are assigned to distinct modalities (i.e. bimodal language switching) compared to switching within a modality (i.e. unimodal switching). In Experiment 1–3, we compared unimodal to bimodal switching in language perception. In Experiment 4, unimodal switching was compared to bivocal switching (i.e. languages were assigned to different voices). Experiment 1–3 revealed significantly higher switch costs for bimodal than for unimodal switching, indicating fundamental differences to language production studies. While bimodal switching leads to no (additional) costs but – under specific conditions – even to advantage in production, it increases switch costs in language perception. Moreover, Experiment 4 indicates that this is more a modality-specific rather than a general perception-based effect. Different voices instead of different modalities evoked no similar increase in switch costs.     

Correspondence problems cause repositioning costs in visual working memory

Visual working memory performance often declines when objects are tested in new positions from those they were observed. We report an asymmetry in repositioning costs for orientation compared to colour memory (Experiment 1). Follow-up experiments demonstrated a similar asymmetry for line length memory compared to shape memory (Experiment 2). When different shades of the same colour category were used, however, repositioning costs emerged for colour as well (Experiment 3). Finally, a direct comparison experiment demonstrated an asymmetry for orientation compared to categorical colours, but in a task with no explicit memory demands (Experiment 4). These results challenge previous accounts of repositioning costs, suggesting that they emerge not due to the contents of visual working memory, but naturally because of correspondence procedures that must be executed in order to use a memory to judge the present.     

Intervention in the Library: The Effect of Increased Responsibility on Bystanders' Willingness To Prevent a Theft

Two field experiments tested the hypothesis that a bystander's increased responsibility to act increases the likelihood of his helping the victim of an emergency. In Experiment 1, an individual asked or did not ask the bystander to protect his property in his absence. In Experiment 2, the presence/absence of an unattentive confederate was varied orthogonally to the request/no request manipulation. The results of both experiments indicated that bystanders who received a prior request for protective assistance felt more personally responsible for protecting the individual's property and were more likely to prevent a theft of that property than were bystanders who received no request. The presence of a confederate in Experiment 2 decreased bystanders' felt responsibility and their willingness to intervene on the victim's behalf. The results were interpreted as support for the "felt responsibility" proposition of the Latané and Darley (1970) model of bystander intervention.     

Task-set switching and long-term memory retrieval

The authors tested the hypothesis of a close relationship between the intentional component of task-set switching ("advance reconfiguration;" R. D. Rogers & S. Monsell, 1995) and long-term memory (LTM) retrieval. Consistent with this hypothesis, switch costs are reported to be larger when the switched-to task involves high retrieval demands (i.e., retrieval of episodic information) than when it involves low retrieval demands (i.e., retrieval of semantic information). In contrast, switch costs were not affected by a primary-task difficulty manipulation unrelated to intentional retrieval demands (Experiment 2). Also, the retrieval-demand effect on switch costs was eliminated when time for advanced preparation or task cues explicitly specifying the task rules were provided (Experiment 3). Overall, results were consistent with the hypothesis that the intentional switch-cost component reflects the time demands of retrieving appropriate task rules from LTM.