About Skinner and time: behavior-analytic contributions to research on animal timing

The article discusses two important influences of B. F. Skinner, and later workers in the behavior-analytic tradition, on the study of animal timing. The first influence is methodological, and is traced from the invention of schedules imposing temporal constraints or periodicities on animals in The Behavior of Organisms, through the rate differentiation procedures of Schedules of Reinforcement, to modern temporal psychophysics in animals. The second influence has been the development of accounts of animal timing that have tried to avoid reference to internal processes of a cognitive sort, in particular internal clock mechanisms. Skinner's early discussion of temporal control is first reviewed, and then three recent theories-Killeen & Fetterman's (1988) Behavioral Theory of Timing; Machado's (1997) Learning to Time; and Dragoi, Staddon, Palmer, & Buhusi's (2003) Adaptive Timer Model-are discussed and evaluated.     

Associations between appearance-related self-discrepancies and young women's and men's affect, body satisfaction, and emotional eating: a comparison of fixed-item and participant-generated self-discrepancies

This study examines the associations between appearance-related, actual-ideal self-discrepancies--from both own and romantic partner's standpoints--and negative affect, body satisfaction, and eating behavior. It extends previous research through studying both genders and the romantic partner standpoint, but its main novel contribution is a systematic comparison between idiographic, participant-generated, and nomothetic, fixed-item measures of appearance-related self-discrepancies. The findings show that these measures cannot be, and should not be, treated as equivalent. The idiographic measures were superior in predicting outcome variables when considering the own standpoint. Nomothetic measures did demonstrate some gender-specific associations, but only from the romantic partner standpoint, and only for women. These findings can be explained with respect to the assessment of accessible, versus available, self-discrepancies. Implications for self-discrepancy and body image theory and research are discussed.     

The effects of exposure to muscular male models among men: exploring the moderating role of gym use and exercise motivation

This study examines the effects of exposure to the muscular male body ideal on body-focused negative affect among male gym users and non-exercisers. As hypothesized, the impact of media exposure depended on men's exercise status. Non-exercisers (n = 58) reported greater body-focused negative affect after exposure to images of muscular male models than after neutral images (no model controls), whereas gym users (n = 58) showed a tendency for less body-focused negative affect after the model images than after the control images. Furthermore, the extent to which gym users were motivated to increase strength and muscularity moderated these exposure effects; men who reported stronger strength and muscularity exercise motivation reported a greater degree of self-enhancement after exposure to the muscular ideal. The findings are interpreted with respect to likely differences in motives for social comparisons.     

Common Etiological Sources of Anxiety,Depression, and Somatic Complaints in Adolescents: A Multiple Rater twin Study

Somatic complaints in children and adolescents may be considered part of a broader spectrum of internalizing disorders that include anxiety and depression. Previous research on the topic has focused mainly on the relationship between anxiety and depression without investigating how common somatic symptoms relate to an underlying factor and its etiology. Based on the classical twin design with monozygotic and dizygotic twins reared together, our study aimed to explore the extent to which the covariation between three phenotypes in adolescent girls and boys can be represented by a latent internalizing factor, with a focus on both common and specific etiological sources. A population-based sample of twins aged 12–18 years and their mothers and fathers (N?=?1394 families) responded to questionnaire items measuring the three phenotypes. Informants’ ratings were collapsed using full information maximum likelihood estimated factor scores. Multivariate genetic analyses were conducted to examine the etiological structure of concurrent symptoms. The best fitting model was an ACE common pathway model without sex limitation and with one substantially heritable (44 %) latent factor shared by the phenotypes. Concurrent symptoms also resulted from shared (25 %) and non-shared (31 %) environments. The factor loaded most on depression symptoms and least on somatic complaints. Trait-specific influences explained 44 % of depression variance, 59 % of anxiety variance, and 65 % of somatic variance. Our results suggest the presence of a general internalizing factor along which somatic complaints and mental distress can be modeled. However, specific influences make the symptom types distinguishable.     

Quality of life in patients before and after kidney transplantation

Abstract

The aim of the present study was to differentially determine quality of life (QOL) in patients with end-stage renal disease (ESRD) after successful kidney transplantation (RT, Group A) compared with ESRD patients on a waiting list for RT (Group B). and with healthy controls (Group C) because opinions vary as to which treatment modality can best assure ESRD patients a high QOL.

Groups A, B and C each consisted of 149 persons, matched for age and gender. The Munich Quality of Life Dimensions List (MLDL) was used to measure global aspects of QOL. Distinct aspects of QOL were investigated by the Brief Symptom Inventory (BSI) and the Questionnaire for Social Support (K-22).

Groups A and C reported similar QOL. Which was significantly higher than in group B (p < .0001). This was particularly true for the physical and psychological status and daily activities, but not for the social situation. Groups A and B reported similar social support, which was significantly, lower than in group C (p < 006). Both ESRD groups reported higher satisfaction with social support than healthy controls (p < .0001).

Successful RT nor only improved distinct aspects of QOL in patients with ESRD, but even put them on par with healthy controls regarding physical and psychological QOL.

Lower social support and higher satisfaction with social support in both groups of ESRD patients should be evaluated further. From a clinical viewpoint. the improvement of physical and psychological aspects of QOL in RT patients is impressive; but more attention should be paid to constantly low social support in this group of patients. International multi center longitudinal studies to investigate QOL in ESRD patients under different treatments am necessary.     

Mentalisierungsbasierte Psychotherapie bei schizophrenen Psychosen

Recently, there has been growing interest in new methods of psychotherapeutic interventions for schizophrenic patients. Social cognition, social functioning and quality of life are central objectives. Mentalization-based therapy (MBT) is a specific psychodynamic method developed from the fundament of attachment theory and empirical psychotherapy research for the treatment of borderline personality disorder, particularly focusing on attachment relationships, mentalizing capacity and affect regulation. Studies have shown that MBT is able to ameliorate interpersonal experience and social life. The latest neuroscientific findings support this view and encourage the application of a modified form of MBT in the treatment of schizophrenic patients. The authors present a concept for disorder-specific interventions in schizophrenia, including psychoeducational aspects and mentalizing exercises which step-by-step lead to a more reflective work in mentalization-based group psychotherapy.     

The Costs of Consumer Culture and the “Cage Within”: The Impact of the Material “Good Life” and “Body Perfect” Ideals on Individuals” Identity and Well-Being

In this article I explore the motivated construal processes that allow individuals to dispel doubt and sustain conviction in the face of less-than-perfect partners and relationships. The surface features of conviction are discussed first with a focus on the positive illusions that predict relationship well-being and stability. The structural underpinnings of conviction are then discussed with a focus on the cognitive mechanisms that contain the implications of negativity within positive relationship representations. I conclude by discussing possible self-evaluation motives that may interfere with intimates dispelling doubt and finding the sense of conviction needed to sustain satisfying, stable romantic relationships.     

The impact of advertisements featuring ultra‐thin or average‐size models on women with a history of eating disorders

Previous research demonstrates that exposure to ultra‐thin media models leads to increased body image concerns amongst women (Groesz, Levine, & Murnen, 2002 ). There is emerging evidence that attractive, average‐size models do not have this negative effect and can be effective in advertising (e.g. Halliwell & Dittmar, 2004 ). The present study investigates these factors amongst women with a history of eating disorders. Participants either viewed advertisements featuring ultra‐thin, average‐size or control images. Immediately after exposure, they reported their body‐focused anxiety and rated the effectiveness of the advertisements. Whereas exposure to ultra‐thin models did not lead to increased body‐focused anxiety, exposure to average‐size models produced a relief effect, whereby women reported lower levels of body‐focused anxiety. Advertisements featuring ultra‐thin and average‐size models were equally effective. The results suggest that average‐size, attractive models could be used effectively in advertising, which may help to relieve body image concerns amongst these women. Copyright © 2005 John Wiley & Sons, Ltd.