Social influence and threat in confrontations between competent peers.

Five studies investigated social influence processes in confrontations between competent peers and showed a default absence of influence of a competent source on an equally competent target. This default lack of influence is attributed to the representation that competent targets give to the influence encounter, in which different answers from competent peers are incompatible, the error of the source thus being the sine qua non condition of targets’ correctness. However, an influence appeared when the representation of the task was modified via a decentering procedure (Study 1), even when controlling for alternative explanations (Study 2). Study 3 demonstrated that this liberating effect of decentering did not appear when the source was incompetent. Study 4 also examined social comparison processes and showed that independence of judgments produced the same liberating effect as decentering. Finally, Study 5 showed that the default lack of influence in confrontations between competent peers is due to the presence of a threat to the self. Indeed, the reduction of threat through a procedure of self-affirmation modified the representation of the task and allowed influence to appear. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Social anxiety, anxious self-preoccupation, and recall of self-relevant information.

Theoretical and empirical efforts concerning cognitive processes associated with anxiety have typically emphasized either cognitive deficits (i.e., reduced learning, memory, and task performance) or cognitive excesses (i.e., increased self-focused, ruminative thought). Evidence of these 2 types of cognitive processes has primarily been based on different types of sources (performance measures and self-reports), which precludes direct comparisons of the extent to which cognitive deficits and/or excesses characterize anxiety states. The present study attempted to directly compare the cognitive excesses and deficits associated with social anxiety by operationalizing both types of cognitive phenomena with similar performance measures. 97 undergraduates, selected on the basis of high or low scores on the Social Avoidance and Distress Scale, performed a modified self-referent depth-of-processing paradigm under stress or no-stress conditions. Socially anxious Ss in a socially evaluative situation evidenced a specific type of cognitive excess (i.e., concern over evaluations by others) but not cognitive deficits. Results are discussed in terms of person-by-situation models of anxiety and the nature and treatment of social anxiety. (42 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Social class differences in verbal communicative accuracy: A question of which question?

Reviews the literature to determine which communication task and social class sample variables increase the likelihood of finding social class differences in communicative accuracy. The most critical factors appear to be (a) a communication task sensitive to possible social class differences in vocabulary or perceptual skill, (b) a communication situation that does not reflect normal conversation, (c) differences between the social class samples in IQ or formal education, and (d) a lower-lower-class sample. The drawbacks of focusing only on social class, rather than on possible mediating social processes, are discussed. Social class differences in communicative accuracy were found to be greater than race or sex differences and comparable to small age differences. No clear conclusions could be drawn about how social class differences in communication skills vary as a function of age or about whether within-class communication is more effective than between-class communication. Little support was found for hypothesized social class differences in verbal communicative style. The issue of the representativeness of past studies is discussed. (3 p ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Frequency perception of individual and group successes as a function of competition, coaction, and isolation

The frequency perception of successful and unsuccessful outcomes obtained in serial tasks was investigated in two experiments. Subjects were assigned to serial tasks in which the outcome stimuli ("right" and "wrong") immediately followed subjects' responses to each task item. Subjects' perceptual judgment about the number of "rights and wrongs" obtained was requested at the end of the serial task (incidental event perception). In Experiment 1, subjects performing in groups of four were compared with individual performers both in competing and noncompeting (coacting) conditions. In Experiment 2, the influence of verbal communication and competition versus isolation was examined. Significant and predicted differences in frequeency perception were found (a) in group performers as compared with individual performers, (b) in groups with verbal communication as compared with groups without verbal communication, and (c) in competing groups as compared with noncompeting, especially isolated, groups. The frequency perception of success is discussed in the context of impression formation processes, and its impact on person perception and learning is mentioned. A tentative explanation in terms of affective and cognitive processes related to social interaction is submitted.     

The Neuroanatomical Basis of Understanding Sarcasm and Its Relationship to Social Cognition.

The authors explored the neurobiology of sarcasm and the cognitive processes underlying it by examining the performance of participants with focal lesions on tasks that required understanding of sarcasm and social cognition. Participants with prefrontal damage (n = 25) showed impaired performance on the sarcasm task, whereas participants with posterior damage (n = 16) and healthy controls (n = 17) performed the same task without difficulty. Within the prefrontal group, right ventromedial lesions were associated with the most profound deficit in comprehending sarcasm. In addition, although the prefrontal damage was associated with deficits in theory of mind and right hemisphere damage was associated with deficits in identifying emotions, these 2 abilities were related to the ability to understand sarcasm. This suggests that the right frontal lobe mediates understanding of sarcasm by integrating affective processing with perspective taking. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A dissociation between simple and complex span impairment in alcoholics

We investigated whether the surprisingly good memory performance of alcoholics may result from simple memory performance being spared while performance in complex memory tasks is impaired. Simple word span was contrasted with a complex word span task involving concurrent monitoring and re-organisation of items for recall. To control for disruption of rehearsal in the complex word span task, performance on two additional tasks with disrupted rehearsal but no additional processing components was studied. As hypothesised, the alcoholics showed a deficit in the complex but not the simple word span task. They were also impaired, compared to controls, on both tasks with disrupted rehearsal. The difference between groups remained in the complex span task when scores in simple span and either of the two other tasks were used as covariates. Thus, both executive processes necessary for coping with disrupted rehearsal and additional processes scheduling processing and storage in a complex task may play a role in accounting for working memory deficits found in alcoholics.     

A contribution of cognitive decision models to clinical assessment: Decomposing performance on the Bechara gambling task.

The Bechara simulated gambling task is a popular method of examining decision-making deficits exhibited by people with brain damage, psychopathology, antisocial personality, or drug abuse problems. However, performance on this task is confounded by complex interdependencies between cognitive, motivational, and response processes, making it difficult to sort out and identify the specific processes responsible for the observed behavioral deficits. The authors compare 3 competing cognitive decision models of the Bechara task in terms of their ability to explain the performance deficits observed in Huntington's disease patients as compared with healthy populations and people with Parkinson's disease. The parameters of the best fitting model are used to decompose the observed performance deficit of the Huntington patients into cognitive, motivational, and response sources. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Aging and reflective processes of working memory: Binding and test load deficits.

It was hypothesized that age-related deficits in episodic memory for feature combinations (e.g., B. L. Chalfonte & M. K. Johnson, 1996) signal, in part, decrements in the efficacy of reflective component processes (e.g., M. K. Johnson, 1992) that support the short-term maintenance and manipulation of information during encoding (e.g., F. I. M. Craik, R. G. Morris, & M. L. Gick, 1990; T. A. Salthouse, 1990). Consistent with this, age-related binding deficits in a working memory task were found in 2 experiments. Evidence for an age-related test load deficit was also found: Older adults had greater difficulty than young adults when tested on 2 features rather than 1, even when binding was not required. Thus, disruption of source memory in older adults may involve deficits in both encoding processes (binding deficits) and monitoring processes (difficulty accessing multiple features, evaluating them, or both). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Bilateral amygdala damage impairs the acquisition and use of common ground in social interaction.

Objective: The development of “common ground,” or mutual knowledge of shared information, is believed to require the ability to update a mental representation of another person's thoughts and knowledge based on verbal information and nonverbal social and emotional signals, to facilitate economical communication. As in other forms of everyday social communication, the development of common ground likely requires the orchestration of multiple cognitive processes supported by various neural systems. Here, we investigate the contribution of the amygdala to these processes. Method: SM, a patient with complete, focal, bilateral amygdala damage, and deficits in social and emotional processing, and five healthy comparison participants, each interacted with a familiar partner. We investigated the participants' ability to develop and use referential labels across 24 dynamic, collaborative interactions. Participants verbally directed their partner how to arrange a set of 12 abstract tangrams while separated by a low barrier, allowing them to see each other but hiding their tangrams. Results: In contrast to comparison participants, SM exhibited an impaired rate of learning across trials and did not show the typical simplification in the labels generated during the interactions. Detailed analyses of SM's interactional discourse and social behavior suggested that she has impaired perspective-taking or what can be interpreted as deficient “theory of mind,” manifested in abnormal “language-in-use.” Conclusions: These results support the conclusion that the amygdala, a structure critical for social and emotional processing, plays an important role in the acquisition and use of common ground and in social communication more broadly. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Social Identity, Group Processes, and Performance in Synchronous Computer-Mediated Communication.

This study examined group processes in a synchronous context and their effects on performance, assuming that these processes would be strongly dependent on the salience of social identity. It was predicted that the mere categorization of students into an online group and comparison with other groups, 2 basic conditions related to social identity, would enhance group identification, interaction patterns, and group performance in a relatively complex academic task. As predicted, the categorization manipulation enhanced group identification and increased task- and morale-building communication. It was not related to performance. These findings invite a more thorough examination of the impact of social identity on the building of a sense of online community at the early stage of a learning process. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Age Equivalence in Switch Costs for Prosaccade and Antisaccade Tasks.

This study examined age differences in task switching using prosaccade and antisaccade tasks. Significant specific and general switch costs were found for both young and old adults, suggesting the existence of 2 types of processes: those responsible for activation of the currently relevant task set and deactivation of the previously relevant task set and those responsible for maintaining more than 1 task active in working memory. Contrary to the findings of previous research, which used manual response tasks with arbitrary stimulus-response mappings to study task-switching performance, no age-related deficits in either type of switch costs were found. These data suggest age-related sparing of task-switching processes in situations in which memory load is low and stimulus-response mappings are well learned. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Age-related deficits in component processes of working memory.

Working memory deficits in normal aging have been well documented, and studies suggest that high memory load plus the presence of distraction negatively impacts successful memory performance to a greater degree in older individuals. However, characterization of the component processes that are impaired by these task manipulations is not clear. In this behavioral study, younger and older subjects were tested with a delayed-recognition and recall task in which the encoding and delay period were both manipulated. During the encoding period, the subjects were presented with either a single letter or multiple letters at their predetermined forward letter span, and the delay period was either uninterrupted or interrupted with a visual distraction. There was an age-related impairment of working memory recognition accuracy only in the combination of high memory load and distraction. These results suggest that when working memory maintenance systems are taxed, faulty recognition processes may underlie cognitive aging deficits in healthy older individuals. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Assessment and training of role-taking and referential communication skills in institutionalized emotionally disturbed children.

Evaluated 125 institutionalized emotionally disturbed 8-15-yr-old children in terms of their role-taking and referential communication skills. On the basis of this screening process, the 48 Ss who performed most poorly on these measures were assigned randomly to 1 of 2 experimental training programs intended to remediate deficits in either role-taking or referential communication skills. As a group these institutionalized Ss were significantly delayed in the acquisition of both role taking and referential communication when compared with samples of their normal age-mates. Pre- and postintervention comparisons indicated that Ss of both experimental groups improved significantly in their role-taking ability. Ss of the communication training program also demonstrated significant improvement in referential communication skills. A 12-mo follow-up showed a trend for improvements in both test measures to be associated with improvements in social adjustment as rated by institutional staff. (30 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Visual attention in HIV-1 infection.

27 nondemented HIV-seropositive men and 13 seronegative controls performed 2 versions of a spatial attention task that engaged either automatic or controlled attentional processing. Ss also performed a 3rd task requiring divided attention, which tested for potential deficits in attentional resources. HIV-seropositive symptomatic Ss were impaired on the automatic processing task, whereas asymptomatic Ss performed the task normally compared with controls. In contrast, no differences were observed among the 3 groups on the controlled attention task. However, both seropositive groups showed deficits on the divided attention task. These results suggest that deficits in selective attention are present early in the course of HIV-1 infection. The most prominent impairment is seen on tasks that are highly demanding of attentional resources, whereas deficits in automatic processing develop later in the disease process. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Aging and selective attention: an issue of complexity or multiple mechanisms?

Previous studies have shown age-associated deficits in selective attention that vary as a function of task demands. The present study was conducted to dissociate the effect of task complexity on age-related performance differences from qualitative differences in cognitive demands. Twenty-four young and 24 older adults were administered two versions of the Stroop Test (Hartley, 1993). The Color-Block version required identifying the color of a box while ignoring the name of a color printed either above or below the box. The Color-Word version required naming the color of a word while ignoring the semantic meaning of the word (a color name). Each version of the task included a two- and four-color choice condition as a manipulation of task complexity. Old and young adults performed comparably on the Color-Block Task, but older adults were significantly impaired on both conditions of the Color-Word Task, particularly in the four-choice condition. Results suggest age-related differences in the distinct attentional processes demanded by each task are not attributable to general slowing.     

Psychological Processes Underlying Risky Decisions in Drug Abusers.

Decision-making deficits are considered to be a significant contributing factor for drug abuse. Drug abusers performed poorly on a simulated gambling task (A. Bechara, H. Damasio, D. Tranel, & S. Anderson, 1994); however, the psychological processes that contribute to these deficits are unknown. The authors used cognitive decision models with a simulated gambling task (SGT) to examine underlying processes of decision making in 66 drug abusers and 58 control participants. As expected, male drug abusers performed more poorly than male controls, and model results showed that male drug abusers placed greater emphasis on wins. The findings for women were less clear because control women performed at chance level on the SGT. Additional studies of gender differences on the SGT are needed to clarify these findings of discrepant performance in the control women. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Age-related deficits in mice performing working memory tasks in a water maze.

This study determined whether mice exhibit spatial working memory deficits with increased age. C57BL/6JNia mice of 3 different ages were tested in the Morris water maze with 2 protocols designed to assess immediate and delayed working memory abilities. Young mice required multiple trials in order to show improvements in the working memory task. Deficits in immediate working memory were detected in both 10- and 24- to 26-month-old mice. Reference memory deficits and declines in performance in the delayed working memory task were only seen in 24- to 26-month-olds. This increased susceptibility of immediate working memory processes to the aging process in mice may be related to their need for more rehearsal in the water maze than other species. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Psychedelic drug flashbacks: Attentional deficits?

Tested the validity of theories explaining psychedelic flashbacks as manifestations of deficits in attentional processes caused directly or indirectly by a drug. 34 psychedelic drug users experiencing flashbacks were compared with 29 psychedelic drug users not experiencing flashbacks and with 24 non-drug-using controls on a reaction time task with various preparatory intervals. Findings indicate that the flashbackers' attention was comparable to the attention of the nonflashbacking drug users; both drug-using groups did substantially better than the non-drug-using controls. (19 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Recall and recognition free learning in schizophrenics.

Administered recall and recognition learning tasks to 30 schizophrenic and 30 nonschizophrenic psychiatric inpatients. The schizophrenics were inferior to the nonschizophrenics in the number of correct items reproduced on the recall tests, but the 2 groups did not differ significantly in the number of correct items identified on the recognition tests. The schizophrenics made more intrusion errors on both the tests of recall and recognition. Compared to the nonschizophrenics, the schizophrenics' intrusion errors were more marked on the recall than on the recognition tests: the Groups * Tasks interaction was significant. Results are related to a theory of overinclusion in schizophrenia, developed to account for schizophrenic deficits in a communication task. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Interpersonal relationships and task performance: An examination of mediation processes in friendship and acquaintance groups.

This study used multiple methods to examine group processes (information sharing, morale building, planning, critical evaluation, commitment, monitoring, and cooperation) that mediate the effect of relationship level on group performance. The study uses a 2 by 2 experimental design, crossing relationship (friendship vs. acquaintance) as a between-subjects variable and task type (decision making vs. motor) as a within-subject variable. Fifty-three 3-person groups participated in the study, and data from 4 types of measurement were used to analyze the mediating processes between relationship level and task performance. Friendship groups performed significantly better than acquaintance groups on both decision-making and motor tasks because of a greater degree of group commitment and cooperation. Critical evaluation and task monitoring also significantly increased decision-making performance, whereas positive communication mediated the relationship between friendship and motor task performance. (PsycINFO Database Record (c) 2010 APA, all rights reserved)