How semantic category modulates preschool children’s visual memory

The dynamic interplay between perception and memory has been explored in preschool children by presenting filtered stimuli regarding animals and artifacts. The identification of filtered images was markedly influenced by both prior exposure and the semantic nature of the stimuli. The identification of animals required less physical information than artifacts did. Our results corroborate the notion that the human attention system evolves to reliably develop definite category-specific selection criteria by which living entities are monitored in different ways.     

Out of the chaos

This paper describes key processes of organizational change and instability, both internal and external to the workplace involved, over a 5 year period. It is an attempt to use psychoanalytic variables to illuminate the underlying issues involved. The case study concerns a caring service located within a public sector organization. Material will be presented on the psychodynamic aspects of upheaval and change. Changes in organizational culture will be described with the emphasis on organizational regression, mourning, and resistance to change. The operation of projective and introjective mechanisms, and the role of transference in relations between management and staff will be considered. Leadership, organizational culture and issues of dependency, authority, role, boundary and difference will then be explored.     

Risk and Trust in Public Health: A Cautionary Tale

The leading ethical position on placebo-controlled clinical trials is that whenever proven effective treatment exists for a given condition, it is unethical to test a new treatment for that condition against placebo. Invoking the principle of clinical equipoise, opponents of placebo-controlled trials in the face of proven effective treatment argue that they (1) violate the therapeutic obligation of physicians to offer optimal medical care and (2) lack both scientific and clinical merit. We contend that both of these arguments are mistaken. Clinical equipoise provides erroneous ethical guidance in the case of placebo-controlled trials, because it ignores the ethically relevant distinction between clinical trials and treatment in the context of clinical medicine and the methodological limitations of active-controlled trials. Placebo controls are ethically justifiable when they are supported by sound methodological considerations and their use does not expose research participants to excessive risks of harm.     

Roles of Leisure in Coping with Stress Among University Students: A Repeated-Assessment Field Study

This article reports findings of a study to examine the effects of leisure coping on various stress coping outcomes including: immediate outcomes (perceived coping effectiveness, perceived satisfaction with coping outcomes, and perceived stress reduction) and distal or long-term outcomes (physical and mental ill-health and psychological well-being), above and beyond the contributions of general coping - coping not directly associated with leisure. A repeated-assessment field design was used to examine ways in which university students cope with stressors in their daily lives. The study found that leisure coping beliefs (leisure-generated dispositional coping resources) significantly predicted lower levels of mental and physical ill-health and greater levels of psychological well-being above and beyond the effects of general coping. Also, the use of leisure coping strategies (situation-specific stress coping strategies through leisure) was significantly associated with higher levels of perceived coping effectiveness and stress reduction when the effects of general coping were taken into account. Significant contributions of specific leisure coping dimensions were found as well.     

A cross-cultural study of hindsight bias and conditional probabilistic reasoning

Hindsight bias is a mistaken belief that one could have predicted a given outcome once the outcome is known. Choi and Nisbett (2000 Choi, I. and Nisbett, R. E. 2000. Cultural psychology of surprise: Holistic theories and recognition of contradiction. Journal of Personality and Social Psychology, 79: 890–905. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar]) reported that Koreans showed stronger hindsight bias than Americans, and explained the results using the distinction between analytic cognition (Westerners) and holistic cognition (Easterners). The purpose of the present study was to see whether hindsight bias is stronger among Easterners than among Westerners using a probability judgement task, and to test an “explicit–implicit” hypothesis and a “rule-dialectics” hypothesis. We predicted that the implicit process is more active among Easterners to generate hindsight bias, and that Easterners are more dialectical thinkers, whereas Westerners are more rule-based thinkers. French, British, Japanese, and Korean participants were asked to make probabilistic judgements in a Good Samaritan scenario (Experiment 1) and in a scenario including conditional probabilistic judgement (Experiment 2). In both Experiments, we presume that the implicit revision of causal models is made just by being given unexpected outcome information, and that explicit revision is made by being asked to point out possible factors for an unexpected outcome. In the results Easterners showed greater hindsight bias generally and it was greater in the Good Samaritan scenario. We conclude that the reason why hindsight bias was lower among Westerners is primarily that they tried to follow a rule to suppress the bias.     

Team change climate: A group-level analysis of the relationships among change information and change participation,role stressors,and well-being

We explored whether teams develop shared perceptions regarding the quantity and quality of information and the extent of participation in decision making provided in an environment of continuous change. In addition, we examined whether change climate strength moderated relationships between change climate level and team outcomes. We examined relationships among aggregated change information and change participation and aggregated team outcomes, including two role stressors (i.e., role ambiguity and role overload) and two indicators of well-being (i.e., quality of worklife and distress). Questionnaires were distributed in an Australian law enforcement agency and data were used from 178 teams. Structural equation modelling analyses, controlling for a marker variable, were conducted to examine the main effects of aggregated change information and aggregated change participation on aggregated team outcomes. Results provided support for a model that included method effects due to a marker variable. In this model, change information climate was significantly negatively associated with role ambiguity, role overload, and distress, and significantly positively associated with quality of worklife. Change participation climate was significantly positively associated with quality of worklife. Change climate strength did not moderate relationships among change climate level and team outcomes.     

Willingness to accept occupational change when offered incentives: Comparing full-time and part-time employees

The ability to deal with occupational change is becoming increasingly important. We hypothesized that individual differences determining preferences for specific types of mobility (i.e., global personality traits and uncertainty tolerance) and decisional factors theoretically derived from the theory of planned behaviour (e.g., desirability of change; subjective norms) would be associated with higher willingness to accept occupational change when incentives such as greater autonomy were offered. These hypotheses were tested in a questionnaire study with samples of full-time and part-time employees. We further expected employment situation to function as a moderator in this process. Overall, results of regression analyses confirmed the relevance of the core components of the theory of planned behaviour. In addition, we found decisional factors to be more closely linked to the outcomes of full-time employees than to those of part-time employees. We discuss the practical implications of our results in terms of how best to support employees in adapting to the increasing demands for occupational change.     

Processing of indexical information requires time: Evidence from change deafness

In three experiments, the efficiency in detecting fear-relevant and fear-irrelevant visual stimuli are compared. A visual search paradigm is used where participants are presented with matrices of different sizes (4 objects/9 objects) and must determine whether all objects are taken from the same category or whether there is a discrepant one. Results from all experiments were consistent with the threat-superiority effect. Participants were quicker when the target was threatening than when it was not. Other indicators confirmed that the detection of threatening targets involves more efficient processes (reduced slopes, absence of position effects). A crucial aspect of these experiments was the comparison of evolutionary-relevant (snakes, spiders, etc.) and modern (guns, syringes, etc.) threats. The threat-superiority effect was repeatedly found for both types of target. Stronger effects were sometimes observed for modern than for evolutionary-relevant threats. The implications for evolutionary explanations of the effect of fear on visual attention are discussed.     

Lexical coherence in short-term memory: Strategic reconstruction or “semantic glue”?

This study explores the foundation of lexical/semantic phoneme binding effects in verbal short-term memory (STM). The immediate serial recall of pure lists of words and nonwords was compared with the recall of mixed lists that had either a predictable, alternating structure (e.g., wnwnwn) or an unpredictable structure (i.e., the serial positions of the words/nonwords could not be known in advance). The study provides evidence for two separate mechanisms by which long-term linguistic knowledge contributes to STM. First, there was evidence for automatic lexical/semantic binding effects that were independent of knowledge of lexical status. The nonwords in both types of mixed list damaged word recall and encouraged the phonological elements of words to migrate. In both alternating and unpredictable mixed lists, the phonemes of words were more likely than the phonemes of nonwords to be recalled together as a coherent item, suggesting that lexical/semantic knowledge encourages the phonological elements of words to emerge together in immediate serial recall, even when lexical status is unknown. Secondly, there was evidence for “strategic redintegration”, which was dependent on prior knowledge of the lexical status of the items in mixed lists. When participants recalled items that they knew to be words in advance, they were able to use this knowledge to constrain their responses so that they were more likely to be lexically appropriate. These findings motivate modifications to current theories of the interaction between linguistic knowledge and verbal short-term memory.