A Psychometric Normative Database for Pre-Lung Transplantation Evaluations

This study describes the quality of life and psychological characteristics of a large sample (N = 201) of adult patients evaluated for lung transplantation. In light of the interdisciplinary nature of pre-lung transplant evaluations, establishing norms for measures commonly used in the assessment of transplant candidates has been a priority for the University of Florida transplant programs. Forty-eight percent of the patients reported symptoms of mild to moderate depression. Although quality of life indices were associated with disease severity and exercise tolerance, psychosocial measures generally were not. These data contribute uniquely to the transplant literature and provide valuable normative information on the largest lung transplant cohort reported to date.     

Probabilities For Two Properties

Let R(X, B) denote the class of probability functions that are defined on algebra X and that represent rationally permissible degrees of certainty for a person whose total relevant background evidence is B. This paper is concerned with characterizing R(X, B) for the case in whichX is an algebra of propositions involving two properties and B is empty. It proposes necessary conditions for a probability function to be in R(X, B), some of which involve the notion of statistical dependence. The class of probability functions that satisfy these conditions, here denoted P_I, includes a class that Carnap once proposed for the same situation. Probability functions in P_I violate Carnap's axiom of analogy but, it is argued, that axiom should be rejected. A derivation of Carnap's model by Hesse has limitations that are not present in the derivation of P_I given here. Various alternative probability models are considered and rejected.     

Bayesian probability

Bayesian decision theory is here construed as explicating a particular concept of rational choice and Bayesian probability is taken to be the concept of probability used in that theory. Bayesian probability is usually identified with the agent’s degrees of belief but that interpretation makes Bayesian decision theory a poor explication of the relevant concept of rational choice. A satisfactory conception of Bayesian decision theory is obtained by taking Bayesian probability to be an explicatum for inductive probability given the agent’s evidence.     

Development of a Patient Adherence Scale for Exposure and Response Prevention Therapy

Exposure and response prevention (EX/RP) is an evidence-based treatment for obsessive-compulsive disorder (OCD). For EX/RP to be maximally effective, it is believed that patients must adhere outside of sessions to the procedures they learn in therapy. To date, there is no standard measure of patient EX/RP adherence, despite the importance of accurately assessing EX/RP adherence in both clinical research and practice. This paper describes the development of the Patient EX/RP Adherence Scale (PEAS), which assesses the patient's between-session adherence to the therapist's EX/RP instructions, and presents initial data on the scale's reliability and validity. The scale was designed to focus on the key procedures of EX/RP and to be brief enough to be used at each treatment session. The scale demonstrates excellent interrater reliability and good face and content validity. The usefulness of the scale is considered in the context of being an important tool to researchers trying to understand and improve outcomes of EX/RP for OCD as well as to EX/RP therapists in clinical practice. Future research will need to test the scale's reliability and validity in a larger sample of patients over the course of treatment.     

The Concept of Inductive Probability

The word ‘probability’ in ordinary language has two different senses, here called inductive and physical probability. This paper examines the concept of inductive probability. Attempts to express this concept in other words are shown to be either incorrect or else trivial. In particular, inductive probability is not the same as degree of belief. It is argued that inductive probabilities exist; subjectivist arguments to the contrary are rebutted. Finally, it is argued that inductive probability is an important concept and that it is a mistake to try to replace it with the concept of degree of belief, as is usual today.     

Depression as a predictor of perceived social support and demand: a componential approach using a prospective sample of older adults

This study examined the relationship of the cognitive, mood, and somatic components of depression on perceptions of social support and social demand among older adults (n = 851) over two years. Factor-analyses confirmed the factor structure of our multicomponential model of depression. Results supported our proposal that interpersonal specificity, as measured by depressive cognition about self and others, is important to predicting changes in perceived support and demand over time. Each component of depression was related to social support and social demand cross-sectionally, whereas only the cognitive component of depression predicted changes in support and demand prospectively. Future research should consider the pathways linking depressive cognition to perceived support and demand.     

Psychometric schizotypy and motor performance

Motor abnormalities have long been a focus in discussions of schizophrenia. The present study used a newly developed line drawing task to examine fine motor performance and psychometrically assessed schizotypy in a large, randomly ascertained sample of young adults (N = 120) with no history of psychosis. Poor motor performance on the line drawing task, indexed by root-mean-square error (RMS), was significantly related to 4 separate psychometric measures of schizotypy in the overall sample. The psychometric schizotypy-RMS association remained significant for 2 of the schizotypy measures even when the effects of intellectual functioning, mental state factors, and sustained attention were statistically controlled in a regression analysis. The status of the line drawing index as a schizophrenia liability measure is discussed.     

Probabilities for new theories

Conclusion Contrary to what has been widely supposed, Bayesian theory deals successfully with the introduction of new theories that have never previously been entertained. The theory enables us to say what sorts of method should be used to assign probabilities to these new theories, and it allows that the probabilities of existing theories may be modified as a result.     

Gender-Related Stereotypes of Transformational and Transactional Leadership

This study investigated gender differences in transformational and transactional leadership, and gender-related stereotypes for these forms of leadership. Results indicated that there were no differences in the way the primarily Caucasian subordinates evaluated their actual male and female managers. There were, however, differences in ratings of stereotypic male versus stereotypic female leaders on transformational and transactional leadership, but only by female respondents. Finally, congruence between ratings of actual managers and ratings of stereotypic managers was found primarily for male respondents. Results suggest that stereotypes may be one explanation for gender differences found in prior research on transformational and transactional leadership.