Of monkeys and men: Impatience in perceptual decision-making

For decades sequential sampling models have successfully accounted for human and monkey decision-making, relying on the standard assumption that decision makers maintain a pre-set decision standard throughout the decision process. Based on the theoretical argument of reward rate maximization, some authors have recently suggested that decision makers become increasingly impatient as time passes and therefore lower their decision standard. Indeed, a number of studies show that computational models with an impatience component provide a good fit to human and monkey decision behavior. However, many of these studies lack quantitative model comparisons and systematic manipulations of rewards. Moreover, the often-cited evidence from single-cell recordings is not unequivocal and complimentary data from human subjects is largely missing. We conclude that, despite some enthusiastic calls for the abandonment of the standard model, the idea of an impatience component has yet to be fully established; we suggest a number of recently developed tools that will help bring the debate to a conclusive settlement.     

The who and whom of help giving: An attributional model integrating the help giver and the help recipient

In this article, we investigate the influence of responsibility, moral emotions, and empathy on help giving for stigmatized persons in need. Both characteristics of the recipient of help and the help giver are analyzed within a general theoretical framework. Based on an online study (N = 332), structural equation models confirm and extend an attributional explanation of help‐giving, based on a thinking‐feeling‐acting model. Conditions promoting help giving are identified: (i) A potential help giver who regards himself or herself as responsible for the recipient's misfortune is likely to experience guilt, regret, and shame, thus increasing the likelihood of help. (ii) A potential recipient of help who is regarded as being not responsible for his or her plight elicits sympathy and is thus more likely to receive help. In contrast, when the person in need is regarded as being responsible for his or her plight, anger and even schadenfreude are elicited, and likelihood of help giving decreases. (iii) Different aspects of empathy as a stable personal characteristic exert direct and indirect (i.e., emotionally mediated) effects on help giving. Using structural equation modeling, we outline an attributional model of helping conceptualizing helping behavior within an actor–observer system integrating a variety of moral emotions involved in help giving.     

Short-term and long-term relationships between reflection and performance in teams: evidence from a four-wave longitudinal study

Previous theory and research suggest that team reflection is beneficial for team performance. We argue that results remain inconclusive because prior studies have not accounted for the dynamic nature of this relationship. This paper addresses this research gap by examining time-specific relationships among variables and the intra-team variability of changes across time. In a four-wave longitudinal field study with 97 teams (N = 453 team members) performing a business simulation task, short-term (i.e., autoregressive, cross-lagged effects) and long-term (i.e., latent trajectories) relationships between team reflection and performance were explored. We found evidence that reflection had negative autoregressive effects and that there were direct positive short-term relationships between reflection and performance. Reflection trajectories were seen to decline across time and performance trajectories to increase across time. In addition, teams with either low initial reflection or low initial performance showed higher increases in reflection across time, whilst higher increase in reflection was negatively related to change in performance. Findings are discussed with respect to how they extend the previous literature and what directions they suggest for future research.     

Border conflicts among territorial rock wallabies (Petrogale assimilis)

Videotapes of territorial confilicts between rock wallabies, Petrogale assimilis, were analysed by means of sequential and frequency analysis. P. assimilis differes from most species of macropodoids in that they form long-lasting pair-bonds, and both partners of a pair defend a common territory within a colony. The video-analysis reveals differences between fights of P. assimilis and the “typical” pattern of macropod fighting. Most conflicts are solved by display. Even in actual fighting, few elements of “physical aggression,” such as biting or kicking, etc., are evident, and there is no winner/loser typical frequency difference of any elements. Many conflicts end as a draw. These differences are similar to differences between fighting in territory holders of small monoganous African can antelopes and those of other, more polygynous bovid. © 1994 Wiley-Liss, Inc.     

Stabilität posttraumatischer Intrusionen bei Polizeibeamten

Objectives

This prospective study examined the course of posttraumatic symptoms of police officers across a time span of 12 months (T1: directly, T2: 6 months and T3: 12 months) after confrontation with an event of potentially traumatic nature while on duty.

Method

A total of 50 police officers were diagnosed 6 months after the event (T2) using a structured interview (SCID-I and SCID-II). The global functioning was operationalized at T1 and T2 by the Global Assessment of Functioning Scale (GAF) and the degree of impairment by the Impairment Score (IS). Furthermore, the intensity of posttraumatic symptoms was assessed at T1 and T2 by the Impact of Event Scale - Revised (IES-R). After 12 months (T3) the intensity of posttraumatic symptoms of 40 police officers was assessed again by a mail enquiry.

Results

Of the police officers 14 (28%) received the diagnosis of post-traumatic stress disorder (PTSD) after 6 months. In the PTSD group a significant drop in the level of functioning and a significant increase in the degree of psychiatric impairment could be found. Concerning the stability of the intensity of posttraumatic intrusions (IES-R subscale intrusions) the PTSD group showed in comparison to the non-PTSD group a slower decrease of symptoms over the period of 12 months (ordinal interaction) and no such strong amelioration of the symptoms as for avoidance and hyperarousal could be found.

Conclusions

Although the police force are, due to pre-employment screening and the professional training, both mentally and physically healthy in comparison with the general population, the results point at the risk potential of exceptional events for police officers. Due to the fact that the intensity of posttraumatic intrusions remained on a relatively stable level it seems indispensable to render these police officers further professional support.     

The Role of Precues in the Preparation of Motor Responses in Humans

The authors investigated how precues about the location of an upcoming target are used by the sensorimotor system to reduce manual reaction time. In 4 experiments, participants (N = 12 in each experiment) pressed a response key as fast as possible when a precued or a nonprecued visual target appeared. Precues remained effective when a visual mask was interposed between the display of the precue and the target (Experiment 1), which suggests that precues act downstream from visual sensory memory. The precue effect was abolished when precues were presented along with a task requiring attention and a verbal response (Experiment 2) but not when presented with a task that required verbal output but had no attention demands (Experiment 3). Those findings indicate that precues must be processed attentively to become effective. When the attention-demanding task was interposed between precue and target display, the precue effect was still abolished (Experiment 4), which suggests that individuals' attention must remain in the precued area until target appearance.     

Fairness Perceptions in Web‐based Selection: Impact on applicants’ pursuit intentions,recommendation intentions,and intentions to reapply

This study examines the Gilliland model of applicants’ reactions to selection procedures in a Web‐based context, revealing new theoretical and empirical insights. We extend existing research by further considering a reflective first‐order formative second‐order model consisting of three second‐order justice factors of formal characteristics, explanation, and interpersonal treatment modeled by 11 formative indicators representing the procedural justice rules. Partial least squares path modeling analysis revealed that formal characteristics and interpersonal treatment are positively related to perceptions of process fairness in Web‐based selection. Most salient procedural justice rules revealed were treatment of the applicants, opportunity to perform, propriety of questions, and reconsideration opportunity. Furthermore, process fairness, which was positively related to applicants’ reactions, fully mediated the relationship between justice factors and applicants’ reactions.     

Quality of management by objectives,task-related stressors,and non-task-related stressors as predictors of stress and job satisfaction among teleworkers

This study examined the effects of management behaviour together with jobrelated and non-job-related stressors on stress experience and job satisfaction among teleworkers. Fifty-four participants were full- or part-time teleworkers, and eighteen participants were members of a nonteleworking control group with comparable working tasks recruited from the same companies. Self-report measures of quality of MBO, task-related stressors, and non-job-related stressors (predictors) were collected, together with measures of participants' stress experience and job satisfaction (criteria). The three predictor variables represented rather independent stress factors. Consistent with expectations, non-job-related stressors were higher for teleworkers working predominantly at home compared to office-centred teleworkers and nonteleworking controls. Moreover, regression analyses indicated significant effects of quality of MBO and non-job-related stressors on teleworkers' stress experience and job satisfaction. Occupational health and management implications of these results for preventive and prospective aspects of telework design are discussed.