What is the Revised Fear Survey Schedule for Children measuring?

The Fear Survey Schedule for Children-Revised (FSSC-R) is a widely used self-report questionnaire that purports to measure the number of fears and the overall level of fearfulness in children. A number of studies have shown that the ten most common childhood fears can be found on the Danger and Death subscale of the FSSC-R, with upwards of 50% of children endorsing such fears. However, some researchers (e.g., H. McCathie & S.H. Spence, 1991; Behaviour Research and Therapy, 29, 495-502) have questioned the validity of these findings, suggesting that these items do not reflect actual childhood fears that children have or experience on a daily or regular basis. Rather, they suggest that children are responding to these fear items as if they were actually occurring to them in the here and now. The current study examined the occurrence of five Danger and Death fears from the FSSC-R (i.e., "Not being able to breathe", "Being hit by a car or truck", "Falling from high places", "Bombing attacks or being invaded", and "Fire or getting burned") in a sample of normal school children aged eight to 12 years (N=102). More specifically, we used three different methods to asses these fears: (1). prevalence as determined by the standard FSSC-R procedure, (2). prevalence as determined by a fear list procedure, and (3). actual occurrence or prevalence of these fears in the past week, as determined by a diary method. Results indicated that while these fears ranked high when using the standard FSSC-R procedure, they were considerably less common when using the fear list procedure, and had a low probability of actual occurrence on a daily basis, as well as possessing a short duration and low intensity. Implications for the assessment of fears and the use of self-report measures like the FSSC-R are briefly discussed.     

Multisensory spatial representations in eye-centered coordinates for reaching

Humans can reach for objects with their hands whether the objects are seen, heard or touched. Thus, the position of objects is recoded in a joint-centered frame of reference regardless of the sensory modality involved. Our study indicates that this frame of reference is not the only one shared across sensory modalities. The location of reaching targets is also encoded in eye-centered coordinates, whether the targets are visual, auditory, proprioceptive or imaginary. Furthermore, the remembered eye-centered location is updated after each eye and head movement. This is quite surprising since, in principle, a reaching motor command can be computed from any non-visual modality without ever recovering the eye-centered location of the stimulus. This finding may reflect the predominant role of vision in human spatial perception.     

Exposure to suicide: incidence and association with suicidal ideation and behavior: United States, 1994

Exposure to the suicide of another is common, but the magnitude and effects of such exposure are not well quantified. From a national random telephone survey of U.S. adults, we estimated the 12-month incidence of exposure to suicide and its association with suicidal ideation, planning, and behavior. Of 5,238 respondents, 342 (a weighted 7.0% representing 13.2 million persons) reported knowing a suicide decedent from the previous year. Univariate analysis showed persons reporting such exposure were significantly more likely to describe suicidal ideation and behavior than those unexposed; multivariate analysis showed no association. Though the risk related to suicide exposure may be small, given the magnitude of exposure, it may warrant intervention efforts because of its potential societal impact.     

The hippocampus and memory of verbal and pictorial material

Recognition of words and kaleidoscope pictures showed a double dissociation of left and right hippocampal activity using magnetic source imaging (MSI). MSI has advantages over alternative imaging techniques that measure hemodynamic changes for identifying regional changes in brain activity in real time and on an individual subject basis without the need for image subtraction. In this study, lists of words or kaleidoscope pictures were presented for memorization followed by tests of list items and foils during which brain activity was recorded. There was greater activation in the left than the right hippocampus with abstract nouns (e.g., relief) and greater activation in the right than the left hippocampus with kaleidoscope pictures. This dissociation was evident on a case by case basis. This study demonstrates the specialization of the two medial temporal lobe (MTL) regions, including the hippocampi, for mnemonic processing of verbal and pictorial items that are difficult to encode verbally.     

Self-reported anxiety in children and adolescents: a three-year follow-up study

Anxiety may be more transient in children and adolescents than in adults. The present study involves a longitudinal design enabling the investigation of the continuity/discontinuity of self-reported anxiety in children and adolescents. A sample of 68 children was followed over 3 years. Results indicate that, on the whole, self-reported anxiety decreased over time. This was true for overall anxiety and its sub-types, with the exception of social concerns/concentration, which did not decrease over time. Consistent with past research involving normal fear, girls and younger children were found to score higher on anxiety than boys and older children did. However, those groups scoring higher at inception also demonstrated the most marked decreases over the 3-year period. In addition to the changes found over time, the data indicated continuity in anxiety such that levels of anxiety at inception were significant predictors of follow-up anxiety, although only a small amount of variance was shared. The authors concluded that adult models of anxiety cannot be applied to youth and that future research should investigate the contribution of contextual factors to the development of anxiety in children.     

Do logistic regression and signal detection identify different subgroups at risk? Implications for the design of tailored interventions

Identifying subgroups of high-risk individuals can lead to the development of tailored interventions for those subgroups. This study compared two multivariate statistical methods (logistic regression and signal detection) and evaluated their ability to identify subgroups at risk. The methods identified similar risk predictors and had similar predictive accuracy in exploratory and validation samples. However, the 2 methods did not classify individuals into the same subgroups. Within subgroups, logistic regression identified individuals that were homogeneous in outcome but heterogeneous in risk predictors. In contrast, signal detection identified individuals that were homogeneous in both outcome and risk predictors. Because of the ability to identify homogeneous subgroups, signal detection may be more useful than logistic regression for designing distinct tailored interventions for subgroups of high-risk individuals.     

Cultural Diversity and Patients with Reduced Capacity: The Use of Ethics Consultation to Advocate for Mentally Handicapped Persons in Living Organ Donation

Theoretical Medicine and Bioethics - Living organ donation will soon become the source of the majority of organs donations for transplant. Should mentally handicapped people be allowed to donate,...     

A New View of Meditation

After years of meditating, are you still saddled with many of the same personal conflicts and interpersonal inhibitions that plagued you before you began? Rubin explores the hidden flaws in the meditative method itself. He explores Buddhism's ambivalent relationship to emotional life, and the negative consequences of letting go of experience. Detaching from experience may result in renouncing vital aspects of ourselves, such as constructive passion. The author argues that real meditation is transformative not tranquilizing, fostering a dynamic way of living.     

Asymptotic identifiability of nonparametric item response models

The identifiability of item response models with nonparametrically specified item characteristic curves is considered. Strict identifiability is achieved, with a fixed latent trait distribution, when only a single set of item characteristic curves can possibly generate the manifest distribution of the item responses. When item characteristic curves belong to a very general class, this property cannot be achieved. However, for assessments with many items, it is shown that all models for the manifest distribution have item characteristic curves that are very near one another and pointwise differences between them converge to zero at all values of the latent trait as the number of items increases. An upper bound for the rate at which this convergence takes place is given. The main result provides theoretical support to the practice of nonparametric item response modeling, by showing that models for long assessments have the property of asymptotic identifiability. The research was partially supported by the National Institute of Health grant R01 CA81068-01.