Comments on current ratio-setting models for time perception

This paper is concerned with the analysis and interpretation of ratio-setting data. Ratio-setting data have been used in support of the conclusion that time perception is not veridical. In the present paper, new ratio-setting data are presented and it is argued that the existing ratio-setting models do not allow the psychophysical law for time to be derived.     

The perception of time

The present paper organizes and evaluates selected portions of the time perception literature. Emphasis is on data and theory concerned primarily with judgments of brief temporal intervals. Research concerning the psychophysical law for time, Weber’s law, the time-order error, and the role of nontemporal information is evaluated. This is followed by a consideration of current, quantitatively oriented, theoretical formulations for time perception.     

Multi-disciplinary Competence Assessment: A Case Study in Consensus and Culture

Theoretical Medicine and Bioethics - The case of May Redwing, an American Indian woman assessed for competence is examined in detail. The case highlights the interconnections between the cultures...     

Inattentive and noninattentive ADHD children: Do they constitute a unitary group?

Teacher-rated ADHD and normal control children were administered a continuous performance test (CPT), and were then further subdivided based upon the presence or absence of objectively assessed attentional deficits. In addition, children were assessed using several measures of cognitive and behavioral functioning. Attentional deficits were signficantly more prevalent among the ADHD group, but about half of the ADHD children showed no evidence of objectively assessed attentional dysfunction. Further group analyses indicated that ADHD children with objectively assessed attentional dysfunction appeared cognitively impaired, while ADHD children without objective evidence of attentional dysfunction had more conduct problems. CPT inattention was not related to the presence of cognitive impairments or conduct problems in the control group. These data must be considered preliminary because teacher ratings were the only source of diagnosis and a single measure of inattention was used. However, they suggest that two subtypes of ADHD children can be identified, one characterized by inattention and learning problems, and the other by conduct problems.The authors gratefully acknowledge the assistance of Sister Hildegard Kogler and the St. Francis DeSales School, and the parents and children who participated in this study.     

Sexual behaviour,condom use and prediction in attenders at sexually transmitted disease clinics—implications for counselling

A cohort of 260 clinic attenders completed an inventory to examine sexual behaviour, condom use and appraisal and to determine whether situational factors in their last sexual encounters were predictive of condom use. Response to health education compaigns promoting condoms in the light of HIV were also examined. It was found that risk exposure was consistently high. A subsample induldged in anal intercourse, which was unprotected in over two-thirds of instances. Condom uptake was varied Difficulties with condoms were widespread and fell into physical and psychological categories. The only predictor of condom use was the desire for unprotected sex. This data seems to indicate that sex is not a drive out of conscious control, but that individuals weigh up costs and benefits which may be marginally influenced by some situational variables such as alcohol. This has profound implications for counselling which can be aimed at addressing the misconceptions and beliefs that some individuals hold. Such misconceptions may result in risky behaviour which may potentially expose them to HIV. Such understanding is an important prerequisite for effective interventions. Differences between responses for heterosexual and homosexual men and women were examined.     

Characteristics of the indirect McCollough effect

Induction of contingent color aftereffects with a single chromatic grid sometimes results in an illusory color on a grid different from the one presented during induction. Such illusory color, contingently elicited by a noninduced grid, has been termed the indirect McCollough effect (indirect ME). We show that the indirect ME occurs only when the color complementary to the grid color is present during induction (either physically present or as a color afterimage), and that the indirect ME is seen only on gratings that are orthogonal to the induction orientation. These findings are in accord with the account of the indirect ME proposed by Humphrey, Dodwell, and Emerson (1989). We also show that characteristics of the indirect ME (seen following one-grid induction), both on induced and orthogonal orientations, are similar to those observed with the direct ME (seen following the usual two-grid induction procedure). Both procedures result in contingent aftereffects that display substantial retention and that do not display interocular transfer.     

Total number of MMPI-2 clinical scale elevations predicts premature termination after controlling for intake symptom severity and personality disorder diagnosis

Premature termination of therapy by patients is a common phenomenon that can be deleterious to treatment outcome for patients and also negatively affect therapists, treatment centers, and research programs. Therefore, a method of identifying patients at risk for premature termination could have widespread benefits. This study investigated whether patients’ MMPI-2 profiles, including clinical scale elevations and Negative Treatment Indicator (TRT) scores, could predict premature termination in an outpatient sample, controlling for personality disorder diagnosis and symptom severity at intake. Results indicated that while TRT scores were not incrementally predictive of premature termination, the total number of clinical scale elevations was significantly incrementally predictive of dropout. Clinical implications are discussed.     

Predicting the intensity of losses vs. non-gains and non-losses vs. gains in judging fairness and value: A test of the loss aversion explanation

Three studies examined the predictions that in the context of evaluation of fairness and concessions in negotiations, losses would be perceived as more intensely negative than non-gains, and that non-losses would be perceived as more positive than gains. Extant studies tested only the first of these predictions. These predictions derive from the principle of loss aversion (LA), according to which losses are experienced more intensely than gains of similar objective magnitude. In this view, losses and non-losses are measured against the steep loss part of the value curve, whereas gains and non-gains are measured against the shallow part of the value curve. Our studies replicated extant studies in confirming the first prediction but failed to confirm the second prediction. Specifically, opposite to the prediction of LA, gains were perceived as more intensely positive than non-losses. It seems, therefore, that LA is not a sufficient explanation of why losses are perceived as more averse than gains. Feature positive and regulatory focus effects are discussed as additional potential contributors to the phenomenon.     

Major world events and discrimination

It is known that a major world event caused by one group can influence perceptions of other social groups. The impact of the events of September 11, 2001 on religious and ethnic discrimination in the UK was assessed. Of seven ethnic groups, Pakistanis and Bangladeshis, who were primarily Muslim, reported the greatest increase between pre- and postevent discrimination. So, the attacks on the USA by al-Qaeda, a radical Islamic organization, activated discrimination against people of Islamic faith in the UK. These results highlight links between world events and intergroup relations, and may serve to remind norm violators that the harm they do to people of other groups can impact people of groups perceived to share their values, even in geographically distant places.     

Stigma towards Mental Health Problems during Childhood and Adolescence: Theory,Research and Intervention Approaches

Many children and teenagers living with mental health problems experience stigma from within their peer group, yet this remains an under-researched topic in developmental science and the broader mental health literature. This paper highlights the limitations of adopting measures, concepts and theories that have exclusively emanated from the adult mental health literature. We argue that the social context of children and adolescents is critical in understanding the development and maintenance of stigma towards those with mental health problems, alongside the changing developmental needs and abilities of children and adolescents. In this article we argue that a theory proposed to explain the development of stereotypes and prejudice in childhood has potential as a framework for integrating existing research findings on mental health stigma in childhood and adolescence and providing direction for further research. The need for interventions that are grounded within the developmental science literature and that explicitly state their theory of change are identified as key research priorities for reducing stigma during childhood and adolescence.