956 resultados para 17 Psychology and Cognitive Sciences


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This study provided information about how individual workers perceive, describe and interpret episodes of problematic communication. Sixteen full-time workers (5 males, 11 females) were interviewed in depth about specific incidents of problematic communication within their workplace. Their descriptions of the attributed causes of the incidents were coded using a categorisation scheme developed from Coupland, Wieman, and Giles' (1991) model of sources of problematic communication. Communication problems were most commonly attributed to individual deficiency and group membership, although there were differences depending on the direction of communication. The most negative attributions (to personality flaws, to lack of skills, and to negative stereotypes of the outgroup) were most commonly applied by individuals to their supervisors, whilst attributions applied to co-workers and subordinates tended to be less negative, or even positive in some instances (where individuals attributed the fault to themselves). Overall, results highlighted distinctions between the perceptions of communication problems with supervisors and with subordinates, and are interpreted with reference to social identity theory.

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Fifth-grade children were given a series of word reading tasks. First, two sets of 16 disyllabic words with medial VCV spellings, and with a long initial vowel were selected, varying in frequency but with similar word-initial segments. Nonwords were derived from these sets of words by exchanging initial onsets. Children read these nonwords in a first testing session. In a second test session, children were given the Woodcock Word Identification Test and the set of analogue words from which the nonwords were derived. Initial analyses examined only nonwords derived from words that were correctly read. Both sets of nonwords were more likely to be read with a long initial vowel than a short initial vowel, although this tendency was stronger in nonwords derived from high frequency words. Furthennore, Word Identification ability showed a strong relationship with the preference for long initial vowels in this type of disyllabic nonword, both for nonwords derived from known analogues and for nonwords derived from words that children could not read correctly. This preference was also correlated with the preference for context-sensitive grapheme-phoneme correspondences in the reading of ambiguous monosyllabic nonwords.These results have strong implications for current theories of word reading.

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Rumors collected from a large public hospital undergoing change were content analyzed, and a typology comprising the following five broad types of change-related rumors was developed: rumors about changes to job and working conditions, nature of organizational change, poor change management, consequences of the change for organizational performance, and gossip-rumors. Rumors were also classified as positive or negative on the basis of their content. As predicted, negative rumors were more prevalent than positive rumors. Finally, employees reporting negative rumors also reported more change-related stress as compared to those who reported positive rumors and those who did not report any rumors. The authors propose that rumors be treated as verbal symbols and expressions of employee concerns during organizational change.

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The experiment examined the influence of memory for prior instances on aircraft conflict detection. Participants saw pairs of similar aircraft repeatedly conflict with each other. Performance improvements suggest that participants credited the conflict status of familiar aircraft pairs to repeated static features such as speed, and dynamic features such as aircraft relative position. Participants missed conflicts when a conflict pair resembled a pair that had repeatedly passed safely. Participants either did not attend to, or interpret, the bearing of aircraft correctly as a result of false memory-based expectations. Implications for instance models and situational awareness in dynamic systems are discussed.

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What are the social factors that can change apathy to action? Two survey-based field studies were conducted with National Tertiary Education Union members, to investigate the interplay between individual and group-based psychological processes in union support. The first study was conducted in an industrially calm context and the second, following a national strike in the Australian university sector. Drawing on social identity theory, the studies investigated both individual and group-related factors including: (a) instrumental and ideological attitudes; (b) employee identity; (c) perceptions of employment-related threat, and of relations with management; and (d) normative support for the union amongst fellow employees. Consistent with predictions, groupbased factors (i.e., perceived context and normative support) moderated the role of instrumental and ideological beliefs in the behavioural expression of union support. A subset of participants, who responded at both times, provided additional evidence for the importance of contextually activated group-processes to changes in union behaviour.

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Research investigating the role of stereotypes in jury decision-making has typically considered stereotypes as acting as peripheral cues in determin ing the credibility of experts or likelihood of guilt of defendants — with counter-stereotypic courtroom participants faring less well. The present study investigated the possibility that the extent to which courtroom participants are stereotypic can alter the mode of information processing. Students (N = 78) read a transcript of a case in which either a male or female allegedly committed an armed robbery. As predicted, the female counter-stereotypic defendant was distracting and effortful processing only occurred when the defendant was male. The male was seen as more guilty and the prosecution's case was more convincing when the prosecution had a strong, but not weak, case. There were no effects of case strength for the female defendant. Results are discussed in terms of the role of stereotypes in the jury decision-making.

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Prospective memory (ProM) is the memory for future actions. It requires retrieving content of anaction in response to an ambiguous cue. Currently, it is unclear if ProM is a distinct form of memory, or merely a variant of retrospective memory (RetM). While content retrieval in ProM appears analogous to conventional RetM, less is known about the process of cue detection. Using a modified version of the standard ProM paradigm, three experiments manipulated stimulus characteristics known to influence RetM, in order to examine their effects on ProM performance. Experiment 1 (N — 80) demonstrated that low frequency stimuli elicited significantly higher hit rates and lower false alarm rates than high frequency stimuli, comparable to the mirror effect in RetM. Experiment 2 (N = 80) replicated these results, and showed that repetition of distracters during the test phase significantly increased false alarm rates to second and subsequent presentations of low frequency distracters. Building on these results. Experiment 3 (AT = 40) showed that when the study list was strengthened, the repeated presentation of targets and distracters did not significantly affect response rates. These experiments demonstrate more overlap between ProM and RetM than has previously been acknowledged. The implications for theories of ProM are considered.

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Organisadonal silence is a recendy introduced area of business research that seeks to address why employees fail to express ideas, informadon and opinions that can effecdvely improve organisadonal effecdveness. In making a start to understand silence, the majority of frameworks have suggested that employees withhold valuable input from management because they believe that it is too personally cosdy to speak up, and/or management are unMkely to take acdon about their ideas or concerns. Because today's workforce are largely required to work in groups or teams, one of the primary aims of this paper is to provide a deeper understanding of this phenomenon by focusing on group process factors that are likely to drive silence. Research that consider the group perspecdve indicate that one's ingroup posidon (i,e,, pro to typicality), and the accumuladon of idiosyncrasy credits (i,e,, leeway to offer innovadve ideas) are likely to play a role in whether (or not) people speak up. For example, those on the periphery of the group or less prototypical group members may need to conform strenuously to group norms in order to improve their ingroup posidon. Similarly, those who have accrued few idiosyncrasy credits may need to conform to group expectadons in order to accumulate sufficient "resources" to deviate from group norms, and be taken seriously by other group members. Thus, the conceptual framework proposed is underpinned by the social idendty perspecdve as well as the nodon of idiosyncrasy credits.

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Ethics as a subject is now consistently taught in medical schools within Australia. The theoretical Ethical models used, and the associated clinical discussions, vary between schools. Registrars have further theoretical Ethics teaching within Psychiatry Fellowship Training, and ongoing clinical work that is likely to provide exposure to complex and frequent Ethical dilemmas. As Psychiatry Trainees approach subspecialty training in Child and Adolescent Psychiatry they therefore have a rich experience of both theoretical Ethics teaching and clinical exposure to Ethical issues. In this symposium, the difficulties Child and Adolescent Psychiatry Trainees may have in the integration of multiple theoretical Ethical models are discussed. It is suggested that these difficulties make Ethics Teaching for Child and Adolescent Psychiatry Trainees particularly challenging. This is important given the complex Ethical issues often present when working with Children and their Families. The three main Ethical models of Deontology, Virtue Ethics and Consequentialism are described and their usefulness for the Child and Adolescent Psychiatrist examined. Limitations of these models, and “Four Principles” approaches (such as that of Beauchamp and Childress), for Child and Adolescent Psychiatry, are also considered. Clinical cases are included for discussion. Finally, the ways in which these models may be used to enhance Child and Adolescent Psychiatry Training, and subsequent clinical practice as a Child and Adolescent Psychiatrist, are discussed. The integration of different theoretical Ethical models is considered, with implications identified for clinical practice.

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This study uses a simulated civil trial to examine the effect of a male expert's testimony in a male-dominated industry as compared to a female expert's testimony in a traditionally female-dominated industry. ... As noted by Cooper et al., research on persuasion has reliably demonstrated that, under conditions of message complexity, people rely on heuristic cues rather than the content of the message when judging its validity. ... Similarly, Swenson, Nash, and Roos determined that a female expert witness in a child custody dispute was perceived as possessing greater expertise than a male expert, although this difference was only marginally significant. Findings from an unpublished dissertation, which investigated the influence of expert gender in a case involving child sexual abuse, also found some support, in terms of whether or not jurors reached a verdict in a specified period of time or remained hung, for the hypothesis that a female expert would be more influential than her male counterpart. ... Within each of these trial domains (construction, women's clothing), the second experimental variable was manipulated by varying the gender of the plaintiff's expert witness, with half of the participants receiving testimony from a female expert (Dr. Elizabeth Pinder) and half of the participants receiving testimony from a male expert (Dr. Michael Pinder).

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DCC (deleted in colon cancer), Neogenin and UNC-5 are all members of the immunoglobulin superfamily of transmembrane receptors which are believed to play a role in axon guidance by binding to their ligands, the Netrin/UNC-40 family of secreted molecules (Cell. Mol. Life Sci. 56 (1999) 62; Curr. Opin. Genet. Dev. 7 (1997) 87). Although zebrafish homologues of the Netrin family of secreted molecules have been reported, to date there has been no published description of zebrafish DCC homologues (Mol. Cell. Neurosci. 9 (1997) 293., Mol. Cell. Neurosci. I I ( 1998) 194; Mech. Dev. 62 (1997) 147). We report here the expression pattern of a zebrafish dcc (zdcc) homologue during the initial period of neurogenesis and axon tract formation within the developing central nervous system. Between 12 and 33 h post-fertilisation zdcc is expressed in a dynamic spatiotemporal pattern in all major subdivisions of the central nervous system. Double-labelling for zdcc and the post-mitotic neuronal marker HNK-1 revealed that subpopulations of neurons within the first nuclei of the zebrafish brain express zdcc. These results support our previous observation that patterning of neuronal clusters in the zebrafish brain occurs early in development (Dev. Bioi, 229 (2001) 271). (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.