The Role of Rights in Practical Reasoning: ``Rights' versus ``Needs'

This paper considers the proposal, associated with the CriticalLegal Studies movement (CLS) that the language of rights shouldbe replaced with the language of needs. It argues that thelanguage of needs is no less contestable, and has an even lesssecure relation to the idea of social duty than the idea ofrights. The paper rejects the notion that rights are usuallynegative claims on others – claims to their forbearance –and argues that rights can be understood perfectly well as adiscourse in which affirmative claims are articulated. Moreover,rights are naturally associated with the idea of a moral system– a well-thought-through set of demands, in which potentialconflicts have been addressed and resolved. The concept ofneed does not have such systemic implications.     

Negative-Feedback Seeking Leads to Depressive Symptom Increases Under Conditions of Stress

An earlier empirical investigation found the interaction of negative-feedback seeking and roommate rejection to be predictive of increases in depressive symptoms. This study replicated and elaborated this finding. Participants who sought negative feedback and performed below their personal standard of success were more likely to experience a subsequent increase in depressive symptoms compared with all other students. Furthermore, the interaction of negative-feedback seeking and midterm failure was specific to predicting increases indepressive symptoms, and did not predict anxious symptoms, thus supporting the specificity of the model to depression. These findings suggest that negative-feedback seeking, combined with a negative life event, may place an individual at increased risk for depressive symptoms. Potential methods and consequences of disrupting the pattern of negative-feedback seeking are discussed.     

Specificity of Information Processing Styles to Depressive Symptoms in Youth Psychiatric Inpatients

Although information processing has been widely studied with depressed adults, little emphasis has been placed on the specificity of resultant findings to depression, as opposed to other psychological disorders. Analogously, even less effort has been directed toward examining the information processing styles of depressed children and adolescents. The present study investigated the specificity of information processing styles to depression and anxiety among 58 youth psychiatric inpatients. To assess information processing, we used a self-referent encoding task, in which participants were presented with positive and negative adjectives; participants were asked whether these adjectives described them or not, and were then tested on recall of the adjectives. After controlling for age and gender, lower rates of positive adjective endorsement and lower rates of positive adjective recall were found to be associated with depression, but not anxiety. Additionally, negative adjective endorsement was associated with anxiety symptoms. These results suggest specific cognitive features of depressive symptoms.     

The psychometric function: II. Bootstrap-based confidence intervals and sampling

The psychometric function relates an observer’s performance to an independent variable, usually a physical quantity of an experimental stimulus. Even if a model is successfully fit to the data and its goodness of fit is acceptable, experimenters require an estimate of the variability of the parameters to assess whether differences across conditions are significant. Accurate estimates of variability are difficult to obtain, however, given the typically small size of psychophysical data sets: Traditional statistical techniques are only asymptotically correct and can be shown to be unreliable in some common situations. Here and in our companion paper (Wichmann & Hill, 2001), we suggest alternative statistical techniques based on Monte Carlo resampling methods. The present paper’s principal topic is the estimation of the variability of fitted parameters and derived quantities, such as thresholds and slopes. First, we outline the basic bootstrap procedure and argue in favor of the parametric, as opposed to the nonparametric, bootstrap. Second, we describe how the bootstrap bridging assumption, on which the validity of the procedure depends, can be tested. Third, we show how one’s choice of sampling scheme (the placement of sample points on the stimulus axis) strongly affects the reliability of bootstrap confidence intervals, and we make recommendations on how to sample the psychometric function efficiently. Fourth, we show that, under certain circumstances, the (arbitrary) choice of the distribution function can exert an unwanted influence on the size of the bootstrap confidence intervals obtained, and we make recommendations on how to avoid this influence. Finally, we introduce improved confidence intervals (bias corrected and accelerated) that improve on the parametric and percentile-based bootstrap confidence intervals previously used. Software implementing our methods is available.     

Measuring the time course of selection during visual search

In visual search tasks, observers can guide their attention towards items in the visual field that share features with the target item. In this series of studies, we examined the time course of guidance toward a subset of items that have the same color as the target item. Landolt Cs were placed on 16 colored disks. Fifteen distractor Cs had gaps facing up or down while one target C had a gap facing left or right. Observers searched for the target C and reported which side contained the gap as quickly as possible. In the absence of other information, observers must search at random through the Cs. However, during the trial, the disks changed colors. Twelve disks were now of one color and four disks were of another color. Observers knew that the target C would always be in the smaller color set. The experimental question was how quickly observers could guide their attention to the smaller color set. Results indicate that observers could not make instantaneous use of color information to guide the search, even when they knew which two colors would be appearing on every trial. In each study, it took participants 200–300 ms to fully utilize the color information once presented. Control studies replicated the finding with more saturated colors and with colored C stimuli (rather than Cs on colored disks). We conclude that segregation of a display by color for the purposes of guidance takes 200–300 ms to fully develop.     

Effects of Message Framing on Breast-Cancer-Related Beliefs and Behaviors: The Role of Mediating Factors

The effects of gain-loss message framing on breast-cancer-related cognitions and behaviors were assessed among 539 women aged 30 to 70 years. The design involved a prebrochure telephone interview, followed by a brochure mailout, and a postbrochure telephone interview. The brochures contained information about breast cancer and the risk of family history. Recommended behaviors were framed to emphasize gains, losses, or were neutral; and statistical risk information was presented either positively or negatively. Measures included demographics, family history, breast self-examination (BSE) performance, BSE intention, self-efficacy in performing BSE, perceived early detection risk of breast cancer, perceived susceptibility to breast cancer, and anxiety about breast cancer. A loss-framed message led to greater positive change in BSE behavior. Interactions between framing effects and variables of issue involvement, perceived early detection risk, and self-efficacy indicated effects on behavior, but not beliefs.     

Physiological changes after biofeedback and relaxation training for multiple-pain tension-headache patients

This paper is concerned with the psychophysiology of "muscle-contraction" headaches in a group of Compensation patients suffering from multiple pain problems in addition to headaches. A total of 55 of these patients were divided into 4 groups which received frontalis EMG biofeedback, relaxation training, combined biofeedback-relaxation training, or no treatment. Differences were observed among the 3 experimental treatments and the control group with respect to headache changes, but there were no differences among groups with respect to the changes observed in four underlying physiological responses as a function of time or practice. While the subjects who showed the largest changes in headache characteristics were those who exhibited the largest decreases in frontalis EMG, these were also the subjects whose initial frontalis EMG levels were the highest. It is concluded that, in keeping with a growing literature, the link between frontalis EMG and "muscle-contraction" headaches is a tenuous one and that the changes brought about in headache symptomatology through biofeedback or relaxation training are most likely attributable to a generalization of feelings of mastery over the environment or of self-efficacy brought about in the subjects through apparent success at the task.