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921.
Five subjects were required in each trial to compare directly two sounds and to indicate which sound was louder. Each of the 64 sounds employed consisted of a combination of one of eight intensity levels of a 2-kHz tone and one of eight intensities of a 5-kHz tone. If, as Fletcher and Munson (1933) argued, loudness is additive for tone combinations in which the frequencies are widely separated, then subjects’ judgments should reflect the summed loudnesses of the 2- and 5-kHz tones in a two-tone combination. Judgments of individual subjects were shown to satisfy the conditions for an additive structure, and individual loudness scales were constructed. These loudness scales varied from subject to subject. Since this paired comparison procedure minimized response biases, the results suggest substantial individual differences in the sensory representation of sound intensity. The relations among sensory scales derived from other structured sensory judgments, such as binaural loudness, are discussed.  相似文献   
922.
This study complements the existing literature on decision-making processes and outcomes in complex settings by exploring the impact of different types of complexity on risk strategies in a naturalistic setting. The study analyses a large sample of decisions made by individuals in UK offcourse betting markets, a fertile environment for observing both a variety of risk strategies and a range of task complexities. Specifically, the investigation focuses on the comparative impacts of complexity defined in terms, respectively, of alternatives and attributes. The results suggest that the risk strategy employed is affected by task complexity. Complexity does not affect the size of risk accepted but alternative- and attribute-based complexity together influence the propensity to accept greater degrees of risk. In addition, the effect of attribute-based complexity on risk taking appears to be modified by the use of risk-hedging strategies. The results are observed to corroborate some earlier work on decision process and outcome; where differences with earlier findings are identified, some possible explanations are offered. © 1998 John Wiley & Sons, Ltd.  相似文献   
923.
Examined the roles of gender, instrumentality, and expressivity as moderator of the relations between stressful events and psychological symptoms in samples of junior high (n = 93), senior high (n = 140), and college students (n = 145). Female adolescents in all three samples reported more overall negative events than did males. Females in the junior and senior high samples reported more negative interpersonal stresses than did males. However, there were no indications in any of the samples of a stronger relation between negative events and psychological symptoms for adolescent females than males. Further, there was little evidence that instrumentality or expressivity moderated the relations between negative events and psychological symptoms. In each sample, certain stresses were most strongly related to psychological symptoms: family stresses in the junior high, peer stresses in the senior high, and academic stresses in the college sample. Implications of the findings for developmental changes in stress during adolescence are discussed.  相似文献   
924.
925.
Negative acknowledgement is an impression management technique that uses the admission of an unfavourable quality to mitigate a negative response. Although the technique has been clearly demonstrated, the underlying process is not well understood. The current research identifies a key mediator and moderator while also demonstrating that the effect extends beyond the specific acknowledged domain to the overall evaluation of a target object. The results of study 1 indicate that negative acknowledgement works through mitigating negatively valenced cognitive responses. People who are presented with a negative acknowledgement are less likely to counterargue when forming an evaluation. The results of study 2 reveal that individual differences in need for structure impact the effectiveness of the technique. People who are high in need for structure are more susceptible to the effect presumably because of their desire for easy-to-use information that aids the formation and maintenance of simple knowledge structures.  相似文献   
926.
927.
    
Abstract

The purpose of this study was to develop and evaluate a brief cognitive screen for possible Mild Cognitive Impairment (MCI) and other neurocognitive impairment in a sample of general medical patients. Two hundred community-dwelling general medical patients aged 65 or older participated in this study. Age and education corrected scores from the Rey Auditory Verbal Learning Test and Mattis Dementia Rating Scale were used to classify participants into three groups: MCI, neurocognitive disorder, cognitively intact. Groups were then compared on an independent set of measures: the Consortium to Establish a Registry for Alzheimer’s Disease (CERAD) neuropsychological battery, Mini-Mental State Examination, and Clock Drawing Test. The MCI group constituted 9% of the sample, while 10.5% of the sample was classified into the neurocognitive disorder group. The CERAD Verbal Category Fluency and CERAD Word List Memory Test Delayed Recall measures were individually and collectively the most effective in differentiating cognitively intact elders from persons in both the MCI and neurocognitive disorder groups. We conclude that these two brief measures appear to be effective for detecting possible MCI or neurocognitive disorder, thereby facilitating identification of candidates who would benefit from more detailed neuropsychological assessment.  相似文献   
928.
    
ObjectivesCricket batting is performed under demanding constraints, which requires rapid and accurate decision making for successful achievement of the skill goal. To understand how batsmen negotiate these constraints, the capability of highly skilled and low skilled cricket batsmen to utilise visual information prior to and during sections of ball flight to strike balls delivered by fast bowlers was examined.MethodSix highly skilled and six low skilled batsmen faced different types of balls delivered by three fast bowlers. Batsmen wore vision occlusion spectacles and were required to strike delivered balls, while their vision of the bowler's delivery action and ball flight was selectively occluded. Three vision conditions were randomly designed that included temporal occlusion at: (i) a point prior to ball release (providing only advance information), (ii) a point prior to ball bounce (providing advance and ball flight information) and (iii) no occlusion (where all advance, ball flight and bounce information were visible). Foot movements made forward or backward were assessed as a measure of ball length judgement, while the quality of bat–ball contact was assessed as a measure of interception.ResultsResults demonstrated the superior capability of highly skilled batsmen to utilise information prior to ball release to judge short ball length. Expert batsmen were better able to utilise ball flight information prior to and post-bounce to attain a superior number of bat–ball contacts.ConclusionsFindings demonstrate that the mechanism of experts to deal with task constraints when attempting to intercept a delivered ball is their capability to pick-up visual information to judge ball landing position.  相似文献   
929.
    
In June 2007 the American Journal of Community Psychology published a special issue focused on theories, methods and interventions for systems change which included calls from the editors and authors for theoretical advancement in this field. We propose a conceptual model of systems change that integrates familiar and fundamental community psychology principles (succession, interdependence, cycling of resources, adaptation) and accentuates a process orientation. To situate our framework we offer a definition of systems change and a brief review of the ecological perspective and principles. The Ecological Process Model of Systems Change is depicted, described and applied to a case example of policy driven systems level change in publicly funded social programs. We conclude by identifying salient implications for thinking and action which flow from the Model.  相似文献   
930.
    
Previously, we reported posttreatment findings from a randomized pilot study testing a new attachment-based parenting intervention for mothers enrolled in substance-use treatment and caring for children ages birth to 3 years (N.E. Suchman, C. DeCoste, N. Castiglioni, T. McMahon, B. Rounsaville, & L. Mayes, 2010). The Mothers and Toddlers Program (MTP) is a 12-session, weekly individual parenting therapy that aims to enhance maternal capacity for reflective functioning and soften harsh and distorted mental representations of parenting. In a randomized pilot study, 47 mothers who were enrolled in outpatient substance-abuse treatment and caring for children between birth and 3 years of age were randomized to the MTP versus the Parent Education Program (PE), a comparison intervention that provided individual case management and developmental guidance. At the end of treatment, mothers in the MTP condition demonstrated better reflective functioning, representation quality, and caregiving behavior than did mothers in the PE condition. In this investigation, we examined whether the benefits of MTP at posttreatment were sustained at the 6-week follow-up. Recently, we also identified two components of parental reflective functioning: (a) a self-focused component representing the parent's capacity to mentalize about strong personal emotions (e.g., anger, guilt, or pain) and their impact on the child and (b) a child-focused component representing the parent's capacity to mentalize about the child's emotions and their impact on the mother (N. Suchman, C. DeCoste, D. Leigh, & J. Borelli, 2010). In this study, we reexamined posttreatment outcomes using these two related, but distinct, constructs.  相似文献   
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