The effects of member expertise on group decision-making and performance

This study assesses the effects of member expertise on group decision-making and group performance. Three-person cooperative groups and three independent individuals solved either an easy or moderately difficult version of the deductive logic game Mastermind. Experimental groups were given veridical performance information, i.e., the members' rankings on prior individual administrations of the task. Control groups were not provided with this information. Results supported the predictions of this study: (1) groups gave more weight to the input of their highest performing members with the group decision-making process being best approximated by post hoc “expert weighted” social decision schemes and (2) groups performed at the level of the best of an equivalent number of individuals.     

On the power of autobiographical memories: from threat and challenge appraisals to actual behaviour

Autobiographical memories are a major feature of mental life in humans. However, research on the influence of autobiographical recall on actual behaviour is scarce. We predicted and found that general memories of failure and specific memories of success resulted in worse performance than general memories of success and specific memories of failure. This performance pattern was mediated by task appraisal, suggesting that autobiographical memories (of failure and success) impact performance by shaping the perception of the upcoming task. Combined with the fact that these effects occurred even when the content of autobiographical memories was unrelated to the upcoming task, the present research represents an important step forward in understanding how autobiographical recall influences actual behaviour.     

Coach identity leadership behaviours are positively associated with athlete resource appraisals: The mediating roles of relational and group identification

BackgroundThere is growing evidence identifying the positive effects of sport and exercise leaders engaging in identity leadership. Yet we have limited knowledge of how identity leadership is associated with athletes’ resource appraisals (e.g., self-efficacy) and performance, the underpinning mechanisms that explain such relationships, and changes in relationships across a sporting season.MethodsIn Study 1, 412 amateur and professional athletes completed seven questionnaires directly prior to athletic competition in a cross-sectional design. In Study 2, 136 athletes completed seven questionnaires directly before competition, and one questionnaire directly after competition both at the start and the end of the athletic season.ResultsIn Study 1, relational identification and group identification mediated the positive relationship between identity leadership and self-efficacy, control, approach goals and social support. In Study 2, identity leadership at the start of the season predicted self-efficacy at the end of the season through relational identification. Group identification did not significantly mediate the identity leadership-resource appraisal relationship. Perceived social support at the start of the season predicted greater performance satisfaction at the end of the competitive season.ConclusionsFindings provide evidence that sport coaches’ engagement in identity leadership is key to forming a shared social identity, which in turn, is broadly adaptive for stress appraisals and performance satisfaction both cross sectionally and longitudinally.     

The observer perspective: effects on social anxiety and performance

The cognitive model of social phobia by Clark and Wells (Social phobia : Diagnosis, Assessment and treatment (1995)) proposes that individuals with social phobia generate a negative impression of how they appear to others, constructed from their own thoughts, feelings and internal sensations. This impression can occur in the form of a visual image from an external, or "observer", perspective. Although social phobics use this perspective more than controls, the impact of the observer perspective has not been tested experimentally. This study investigated the effects of taking the observer perspective on thinking, anxiety, behaviour and social performance in high and low socially anxious participants. Forty-four participants (N=22 in each group) gave two speeches, one in the observer and one in the field perspective. Use of the observer perspective produced more frequent negative thoughts, more safety behaviours, and worse self-evaluation of performance in both groups. There were also clear trends demonstrating increases in anxiety and in thought belief ratings in the observer perspective compared to the field perspective. Results are consistent with the Clark and Wells model of social phobia. This study also suggests that in low socially anxious individuals, the observer perspective may contain positive information.     

The interactive effect of leader-member exchange and communication frequency on performance ratings

The authors tested the hypothesis that communication frequency moderates the relationship between leader-member exchange (LMX) and job-performance ratings. In a study of 188 private sector workers, they found that LMX was more strongly related to job-performance ratings among individuals reporting frequent communication with the supervisor than among those reporting infrequent communication. At high levels of LMX, workers reporting frequent communication with the supervisor received more favorable job-performance ratings than did workers reporting infrequent communication. In contrast, at low levels of LMX, workers reporting frequent communication with the supervisor received less favorable job-performance ratings than workers reporting infrequent communication. The authors conducted a 2nd study of 153 public sector workers to provide a constructive replication and found similar results.     

The effects of peer ostracism on children's cognitive processes

In adults, experiences of social exclusion have been shown to not only adversely affect mood and threaten primary needs, but also to disrupt cognitive processes. The aim of this study was to provide an initial test of the effects of social exclusion on cognitive processes in children (N = 55; aged 8–12 years). Ostracism was simulated experimentally using the Cyberball paradigm—a computer-based ball-throwing game that participants believed they were playing with two peers over the internet. Following this, participants were administered subtests from the Working Memory Test Battery for Children. Girls who were ostensibly ignored during the game demonstrated poorer cognitive performance than those who were included by their co-players, while boys did not. Findings are discussed in relation to those previously reported in adult research and evidence of gender-specific correlates of relational aggression in children and adolescents.     

The communication of social stereotypes: the effects of group discussion and information distribution on stereotypic appraisals

Stereotypes are fundamentally social constructs, formulated and modified through discussion and interaction with others. The present studies examined the impact of group discussion on stereotypes. In both studies, groups of participants discussed their impressions about a hypothetical target group after having read behaviors performed by target group members. These behaviors included both stereotypic and counterstereotypic examples, and the distribution of these behaviors varied across discussion group members. In some groups only 1 member knew of the counterstereotypic behaviors; in other groups this information was distributed across all group members. In general, discussion led to a polarization of the target group stereotypes, but this effect was lessened when the counterstereotypic behaviors were concentrated in 1 group member. In this case, these counterstereotypic behaviors were discussed more and retained better.     

The effects of trichotillomania disclosure on peer perceptions and social acceptability

Many individuals with trichotillomania (TTM) do not disclose their condition to others. Although disclosure may have beneficial effects, little is known about the consequences of it. The purpose of the current study was to examine the effects of a brief, simplified preventative disclosure of TTM. Young adults (N = 225) read one of four vignettes, which varied in a 2 (male versus female character) × 2 (preventative disclosure of TTM versus nondisclosure) design, and answered several questions regarding the character in the vignette. Although some potential positive effects of disclosure were found (e.g., reduced likelihood of misattribution), some areas of concerns also surfaced. The findings suggest that a brief, simplified preventative disclosure of TTM led to an increase in negative social perceptions compared to non-disclosure. More specifically, those characters that disclosed TTM were evaluated more negatively and more socially rejected than those that did not disclose. However, the overall perceptions of persons with noticeable hair loss, regardless of disclosure status, were not necessarily negative. Implications of the findings, limitations to the study, and directions for future research are discussed.     

The effects of autonomy-supportive versus controlling environments on self-talk

Based within a self-determination theory framework (SDT: Deci and Ryan, Intrinsic motivation and self-determination in human behaviour. Plenum Publishing Co., New York, 1985), the present study examined the effects of manipulating social-contextual conditions on the content of individuals’ self-talk. Seventy student volunteers were randomly assigned to a controlling or autonomy-supportive experimental condition. Participants were instructed to ‘think-aloud’ throughout a 10-min computerized task during which self-verbalizations were recorded. Audio recordings were transcribed verbatim, and then analysed using the Linguistic Inquiry and Word Count Program (LIWC; Pennebaker et al., LIWC2001; Linguistic Inquiry and Word Count (software and manual). Lawrence Erlbaum, Mahwah, NJ, 2001). Inductive content analyses were also conducted. Triangulation of the quantitative and qualitative findings revealed that in the autonomy-supportive condition, individuals’ self-talk was more informational and less controlling, with participants using more positive emotional words and assents, and fewer negative emotional words, swear words, and first person references than in the controlling condition. The findings suggest that social-context can affect cognitive factors such as self-talk and further support the promotion of autonomy-supportive environments.     

The effects of self-efficacy on physical and cognitive performance: An analysis of meta-certainty

In the present research, we analyzed the effects of self-efficacy (SE) on physical and cognitive performance in real-world settings as a function of the metacognitive certainty in SE. In three studies, participants completed a measure of SE, which asked them to report how sure they were that they can achieve several specific results on various athletic and academic tasks. Moreover, general certainty in their own SE (i.e., SEC) was measured (Studies 1 and 3) or manipulated to be high versus low (Study 2). Relevantly, our studies aimed to obtain a high level of ecological validity by including athletes in natural, real-world settings (i.e., gymnasiums). Furthermore, we sought to extend the findings beyond physical performance by analyzing university students’ cognitive performance in their actual academic setting (i.e., classrooms). Specifically, physical performance was assessed with pull-ups (Study 1) and vertical jump tests (Study 2), and cognitive performance was measured with grades on exams (Study 3). As expected, SE was positively related to performance. Most importantly, we predicted and found an interaction between SE and SEC on performance. That is, the effect of SE on physical and cognitive performance was greater for participants with higher (vs. lower) metacognitive certainty in their SE. In conclusion, to increase the explanatory and predictive power of efficacy beliefs across different domains, we propose that the assessment of SE should also include measures of one’s metacognitive certainty in SE. In addition, we suggest that interventions on SE could benefit from the use of certainty inductions when including these inductions is possible and convenient.     

The moderating influence of job performance dimensions on convergence of supervisory and peer ratings of job performance: unconfounding construct-level convergence and rating difficulty

Meta-analysis was used to cumulate the correlations between supervisor and peer ratings for different dimensions of job performance. The general pattern in the data suggested that raters from the same organizational level disagree as much as raters from different levels. Methods were used to separate the effects of rating difficulty and lack of construct-level convergence on the correlation between supervisor and peer ratings. The authors found complete construct-level convergence for ratings of overall job performance, productivity, effort, job knowledge, quality, and leadership but not for ratings of administrative competence, interpersonal competence, and compliance or acceptance of authority. Higher rating difficulty was more strongly associated with lower mean observed peer-supervisor correlations than were construct-level disagreements between peers and supervisors. Implications for research and practice are discussed.     

The prospect of negotiating: Stress, cognitive appraisal, and performance

Despite a significant literature on the impact of stress on performance in achievement settings, little is known about whether and how stress might matter for would-be negotiators. In two studies, we investigate how bargainers cognitively appraise a looming negotiation, whether its prospect is stressful and what the consequences are for performance. Individuals who appraised a prospective negotiation as a threat experienced more stress ahead of a negotiation, and reached lower quality deals compared to those who had appraised a challenge. Results from a follow-up experiment showed that would-be negotiators who had appraised a threat behaved more passively and were less likely to use tough tactics compared to those who appraised a challenge. Those who appraised a threat also had relatively inaccurate perceptions of their partners’ priorities and interests, which undermined their outcomes. The outcome advantage for those who appraised a challenge was limited to negotiations that contained integrative potential.     

The influence of identity leadership principles on followers' challenge and threat states and motor performance

It has been theorized that a follower can draw upon support from individuals they identify with when approaching competitive situations to improve psychophysiological challenge states, and performance potential. As such, we examine how perceptions of identity leadership influence resource appraisals, cardiovascular reactivity, and performance in a pressurised motor task across two laboratory experiments. In Study 1, 80 participants took part in a within-subjects double-blind design with two conditions: identity leadership (IL) vs no identity leadership (no IL). Results indicated that when instructions align with identity leadership principles (vs. not), followers reported greater resource appraisals to, challenge cardiovascular reactivity to, and motor performance within a motivated performance situation. In Study 2, 120 participants completed a 2 (identity leadership: IL vs. no IL) X 2 (appraisal: challenge vs. threat) between-subjects double-blind design. It was found that when instructions aligned to identity leadership (vs. not), followers reported greater resource appraisals and motor performance. When leaders used challenge (vs. threat) instructions this led to challenge cardiovascular reactivity on approach to competition. Advancing leadership and stress theory, we provide evidence that perceived identity leadership is salient for followers' resource appraisals, cardiovascular reactivity, and motor performance.     

When what you type isn’t what they read: The perseverance of stereotypes and expectancies over e-mail

People form impressions of others by communicating with them, but not all modes of communication transmit information with equal fidelity. E-mail, for instance, is an inherently more limited mode of communication than is voice because of its relative lack of paralinguistic and non-verbal cues. The present research investigated the implication of this distinction for the biasing influence of stereotypes and expectancies. Three experiments demonstrated that racial stereotypes and bogus expectancies influence people’s impressions of a target more strongly over e-mail than voice interactions (Studies 1-3). This occurred despite an experimental design that ensured that the word-for-word content was constant across the two mediums. Follow-up analyses revealed that the effect was due, at least in part, to the greater ambiguity of e-mail versus voice communication (Study 3). Although e-mail affords many benefits, the present research suggests that it may also have some unexpected costs.     

Group norms and excessive absenteeism: The role of peer referent others

Drawing from social identity and social influence theory, we propose that the absence-related norms of an individual’s work-based referent others will have a significant effect on the likelihood of excessive absence behavior. We then develop and test a model of the social mechanisms potentially underlying the relationship between referent absence norms and the likelihood of excessive absence behavior. Our findings indicate that referent group norms significantly explain excessive absence behavior, even when taking into account the absence norms associated with the formal organizational units within which these referent groups are often nested. They also indicate that permissive referent group norms are likely to have a greater impact on the probability of target excessive absence when the target has a more conformist disposition. Finally, post-hoc findings suggest that the more negative targets’ perceptions of the consequences of absenteeism, the more attenuated the impact of permissive group norms on excessive absence behavior.     

The effects of aging on remembering intentions: performance on a simulated shopping task

Three studies are described in which age differences on a task measuring memory for delayed intentions using naturalistic stimuli were examined. A simulated street scene was constructed from a network of photographs and sounds that participants could move through using a touch screen while completing a series of event‐based shopping errand instructions. The objective of the research was to identify the cognitive processes involved in the task that were vulnerable to the effects of ageing. Memory search but not cue detection was specifically affected in older persons when participants were given fewer trials to learn the instructions. There was no age specific effect on cue detection or memory search in either an unfamiliar street or one with increased levels of irrelevant visual and auditory noise. Cue detection but not memory search was disproportionately affected in older persons after filled interruptions, suggesting that the capacity for self‐initiated reinstatement of working memory is reduced in old age. In general, using a computer‐based simulation of a real‐life task was found to be a practical means of examining the effects on behaviour and cognition of task parameters that are significant in assessing everyday memory abilities. Copyright © 2006 John Wiley & Sons, Ltd.     

The effects of music tempo on simulated driving performance and vehicular control

The automobile is currently the most popular and frequently reported location for listening to music. Yet, not much is known about the effects of music on driving performance, and only a handful of studies report that music-evoked arousal generated by loudness decreases automotive performance. Nevertheless, music tempo increases driving risks by competing for attentional space; the greater number of temporal events which must be processed, and the frequency of temporal changes which require larger memory storage, distract operations and optimal driving capacities. The current study explored the effects of music tempo on PC-controlled simulated driving. It was hypothesized that simulated driving while listening to fast-paced music would increase heart rate (HR), decrease simulated lap time, and increase virtual traffic violations. The study found that music tempo consistently affected both simulated driving speed and perceived speed estimates: as the tempo of background music increased, so too did simulated driving speed and speed estimate. Further, the tempo of background music consistently affected the frequency of virtual traffic violations: disregarded red traffic-lights (RLs), lane crossings (LNs), and collisions (ACs) were most frequent with fast-paced music. The number of music-related automobile accidents and fatalities is not a known statistic. Police investigators, drivers, and traffic researchers themselves are not mindful of the risks associated with listening to music while driving. Implications of the study point to a need for drivers' education courses to raise public awareness about the effects of music during driving.     

The effects of speech production and speech comprehension on simulated driving performance

We performed two experiments comparing the effects of speech production and speech comprehension on simulated driving performance. In both experiments, participants completed a speech task and a simulated driving task under single‐ and dual‐task conditions, with language materials matched for linguistic complexity. In Experiment 1, concurrent production and comprehension resulted in more variable velocity compared to driving alone. Experiment 2 replicated these effects in a more difficult simulated driving environment, with participants showing larger and more variable headway times when speaking or listening while driving than when just driving. In both experiments, concurrent production yielded better control of lane position relative to single‐task performance; concurrent comprehension had little impact on control of lane position. On all other measures, production and comprehension had very similar effects on driving. The results show, in line with previous work, that there are detrimental consequences for driving of concurrent language use. Our findings imply that these detrimental consequences may be roughly the same whether drivers are producing speech or comprehending it. Copyright © 2005 John Wiley & Sons, Ltd.     

The effects of trait label and order of presentation on observers' ratings of performance anxiety

In two experiments, the effects of different stimulus presentation orders and trait labels on observers' ratings of performance anxiety were examined. In Experiment 1, 60 college students viewed, in one session, ten 3-min videotapes of a man speaking while displaying a variety of the behavioral manifestations of anxiety. The tapes varied linearly in the percentage of time during which anxious behaviors were emitted. Anxiety ratings were made along either a “calm” or an “anxious” dimension. Subjects were randomly assigned to one of three orders of presentation conditions (with the frequencies of anxious behaviors ascending, descending, or randomized across tapes) and one of two trait-label conditions, calm or anxious. In Experiment 2, 60 additional subjects viewed these same tapes and a contrasting series designed to display a consistent rate of anxiety behaviors. These tapes were viewed in 10 sessions over a 2- to 5-week period. Results replicated prior studies showing that the order of presentation can significantly affect observers' ratings. Additionally, the results suggested that, under certain conditions, subjects may not perceive a conceptually dichotomous variable (e.g., calm vs. anxious) in the same way. These results are discussed in terms of the complexity of observer behavior and potential problems in comparing outcome studies that use dichotomous traits.