Does previewing one stimulus feature help conjunction search?

We examined the effects of previewing one aspect of a search display, in order to determine what subset of display information is most useful as a prelude to a search task. Observers were asked to indicate the presence or absence of a known target, in a conjunction search where the target was defined by the combination of colour and orientation (a yellow horizontal line presented among yellow vertical and pink horizontal distractors). In the colour preview condition of experiment 1, observers were first shown a 1 s preview of the locations and colours of the search items before the actual search set was presented. That is, search items first appeared as yellow and pink squares for 1 s, which each then turned into yellow and pink oriented lines (in the same locations) which comprised the display to be searched. In the orientation preview condition, observers were first shown a 1 s preview of the locations and orientations of the search items before the actual search display was presented. These two conditions were compared to a control condition consisting of standard conjunction search without any preview display. There was no effect of colour preview; there was a marginal effect of orientation preview, but in the opposite direction from what was expected reaction time increased for orientation preview searches. In experiment 2 these previews were compared to two spatial cueing conditions; in this experiment the colour preview did provide a small amount of help. Finally, in experiment 3 both previews were presented in succession, and increased facilitation was found, in particular when the colour preview preceded the orientation preview. These findings are discussed in relation to the literature, in particular the Guided Search model (Wolfe et al 1989 Journal of Experimental Psychology: Human Perception and Performance 15 419-433; Wolfe 1994 Psychonomic Bulletin & Review 1 202-238).     

Patients' Knowledge of Cystic Fibrosis: Genetic Determinism and Implications for Treatment

This paper uses the self-regulation model of illness perceptions (Leventhal et al. , 1984) to consider the implications of different ways of thinking about the causes of illness. The relationship between anxiety/depression and knowledge or denial of illness is also considered. These issues are explored using adherence to treatment in cystic fibrosis (CF) as an example. Twenty-six CF patients took part in semistructured interviews and completed a standardized anxiety and depression scale (HAD, Zigmond and Snaith, 1983). Interview data were analyzed using Interpretative Phenomenological Analysis (Chapman and Smith, 2002). HAD data were analyzed using SPSS. The respondents displayed widely differing levels of knowledge of their condition. Some deterministic comments were also reported. Findings are discussed in relation to the information that physicians might provide to patients and families in the light of increasing knowledge about genetics in society and the genotyping of individuals with genetic conditions specifically. Any important gaps in patient knowledge could usefully be discussed at transition from pediatric to adult care and issues relating to control and genetic determinism discussed with the patients individually.     

Analysis of group differences in processing speed: Where are the models of processing?

Recently, Myerson, Adams, Hale, and Jenkins (2003) replied to arguments advanced by Ratcliff, Spieler, and McKoon (2000) about interpretations of Brinley functions. Myerson et al. (2003) focused on methodological and terminological issues, arguing that (1) Brinley functions are not quantile-quantile (QQ) plots of distributions of mean reaction times (RTs) across conditions; that the fact that the slope of a Brinley function is the ratio of the standard deviations of the two distributions of means has no implications for the use of slope as a measure of processing speed; that the ratio of slopes of RT functions for older and young subjects plotted against independent variables equals the Brinley function slope; and that speed-accuracy criterion effects do not account for slowing with age. We reply by showing that Brinley functions are plots of quantiles against quantiles; that the slope is best estimated by the ratio of standard deviations because there is variability in the distributions of mean RTs for both older and young subjects; that the interpretation of equality of the slopes Brinley functions and plots of RTs against independent variables in terms of processing speed is model dependent; and that speed-accuracy effects in some, but not all, experiments are solely responsible for Brinley slopes greater than 1. We conclude by reiterating the point that was not addressed in Myerson et al. (2003), that the goal of research should be modelbased accounts of processing that deal with correct and error RT distributions and accuracy.     

New phenomenon of abnormal auditory perception associated with emotional and head trauma: pathological confirmation by SPECT scan

We report the case of an immigrant who suffered from death threats and head trauma while a prisoner of war in Kuwait. Two months later, he began to hear conversations that had taken place previously. These perceptions occurred spontaneously or were induced by the patient's effortful concentration. The single photon emission computerized tomography (SPECT) scan performed during this abnormal perceptual experience indicated an increase in regional cerebral blood flow in the left temporal lobe and in the brainstem.     

Impact of personality disorders on treatment outcome for female assault survivors with chronic posttraumatic stress disorder

This study examined the impact of comorbid personality disorders on the outcome of cognitive behavioral treatment for women with chronic posttraumatic stress disorder (PTSD). Seventy-five adult women with PTSD resulting from rape or nonsexual assault in adulthood or sexual abuse in childhood were treated with prolonged exposure with or without cognitive restructuring. Assessment of personality disorders found that 39% of participants met DSM-IV criteria for some personality disorder diagnosis. No difference was found between women with and without personality disorders on the prevalence of PTSD at the end of treatment. Participants with a personality disorder were less likely to attain good end-state functioning, but this may be attributable to the fact that they started off slightly worse than those without personality disorders. Finally, the comorbid patients treated by community therapists fared as well or better than those treated by cognitive behavioral treatment experts in posttreatment prevalence of PTSD and end-state functioning.     

Suicidal behavior in schizophrenia and schizoaffective disorder: examining the role of depression

Understanding the relationship between depression and suicidal behavior among individuals with schizophrenia and schizoaffective disorder can aid assessment and treatment. In this study, 86 individuals with schizophrenia and schizoaffective disorder were assessed for past and current suicidal behavior, depression, hopelessness, and reasons for living. Thirty-four percent reported a history of suicide attempts. Suicidal behavior typically occurred 4.5 years after the onset of psychosis and 7.5 years after the onset of the first major depressive episode for those who had a history of major depression. Depression was frequent among both attempters and non-attempters, but only half of the attempters reported a suicide attempt during an episode of major depression. And almost half of those with depression never made a suicide attempt despite a long history of illness. Although depression is a potential stressor for triggering suicidal behavior in a vulnerable subset of individuals with schizophrenia, schizophrenia research must identify other risk factors for suicidal behavior. Clinicians should remember that even without a depressive episode there is still a significant risk for suicidal behavior in schizophrenia.     

Ethnic group preferences for multicultural counseling competencies

Asian American (n = 155), European American (n = 200), and Hispanic (n = 152) undergraduate students were surveyed using a paired-comparison format to determine preferences for the 9 attitudes/beliefs, 11 knowledges, and 11 skills identified by D. W. Sue, P. Arredondo, and R. J. McDavis (1992) as characteristics of the competent multicultural counselor. The Bradley-Terry-Luce model, which uses a weighted least square regression to place the competencies on a continuum from least preferred to most preferred and to test for significant intergroup differences, was used to analyze the data. Results indicated that preferences for 5 of the 9 attitudes/beliefs, 5 of the 11 knowledges, and 7 of the 11 skills competencies varied as a function of race/ethnicity.     

Jamaican child-rearing practices: the role of corporal punishment

The family is the most prominent social group that exists. It prepares its members for the various roles they will perform in society. Yet, the literature has unequivocally singled out the family as the most violent social group, with parental violence against children being the most prevalent type of family violence. While societies like the United States, Japan, and Sweden have taken a hard line on physical punishment and shifted to a gentler approach to discipline, harsh disciplining of children persists elsewhere. In the Caribbean, and Jamaica in particular, child-rearing and disciplinary practices that would warrant child abuse charges in other Western societies are rampant. This article examines the child-rearing techniques of Jamaican adults and their assumed effects on child outcomes. It also examines the plausibility of the assumption that the harsh physical punishment meted out to children is partially responsible for the current social problems of that island nation. We recommend approaches to tackle the broad goals of addressing familial and societal practices that compromise children's development and well-being.