Quality of life before and after lung transplantation in patients with emphysema versus other indications

Whether lung transplantation improves Health-related Quality of Life in patients with emphysema and other end-stage lung diseases before and after lung transplantation was examined. Between 1992 and 1999, 23 patients with emphysema and 19 patients with other indications completed self-administered questionnaires before lung transplantation, and at 4, 7, 13, and 25 mo. after transplantation. The questionnaire included the Nottingham Health Profile, the State-Trait Anxiety Inventory, the Self-rating Depression Scale, the Index of Well-being, the self-report Karnofsky Index, and four respiratory-specific questions. Neither before nor after transplantation were significant differences found on most dimensions of Health-related Quality of Life between patients with emphysema and other indications. Before transplantation, both groups report major restrictions on the dimensions Energy and Mobility of the Nottingham Health Profile, low experienced well-being, depressive symptoms, and high dyspnea. About 4 mo. after transplantation, most Health-related Quality of Life measures improved significantly in both groups. These improvements were maintained in the following 21 mo.     

MULTIDIMENSIONAL SCALING WITH A PRIORI DIMENSIONS

W aern Y. Multidimensional scaling with a priori dimensions. Scand. J. Psychol., 1972, 13 , 178–189.—This paper presents a method of multidimensional scaling by direct similarity estimates. The method is presented as an alternative to other multidimensional scaling methods, when hypotheses can be made concerning the dimensions underlying the perceptual variation. The method is used with five different sets of stimuli and compared, to an as to dimensions assumption-free component analysis, based on a vector model. The two methods resulted in similar configurations in most cases. One difference was found in a colour material, where the assumed dimensions could be regarded not to be orthogonal to each other. Here the a priori scaling revealed the assumed configuration as projected on the oblique axes whereas the component analysis could not give this information.     

What's in a face: Individual differences in face perception

White and black females judged the similarity of all pairs of white and black male faces. An individual difference multidimensional scaling analysis of the similarity judgments indicated that most of the dimensions underlying the perceptions of male faces involved affective (honest, tense, attractive) characteristics rather than simple physical features (eye width, mouth height). The major physical dimension was face shape (long vs. wide). The dimensions were similar for black and white subjects. An individual difference hypothesis that we pay attention to those characteristics that we possess was partially confirmed.     

PATTERN PERCEPTION,CONCEPTUAL SPACES,AND DIMENSIONAL LIMITATIONS ON INFORMATION PROCESSING

A conceptual space was defined as the collection of all linearly inde- pendent psychological dimensions underlying the multidimensional scaling of a set of tasks. When a single subject scaled a sample of random polygons under fifteen different task conditions, a total of ten linearly independent dimensions was obtained. The number of obtained dimensions in individual tasks ranged between 1 and 3. The results suggest the existence o f a dimensional limitation upon information processing in MDS studies.     

Somatoforme Beschwerden bei Jugendlichen in Deutschland

As part of a larger survey involving a representative sample of 2.050 Germans aged 14 to 92 years, the prevalence of somatoform complaints among young people (N=189,14 to 25 years old) was analyzed separately.The instrument used was the SOMS 2 (Screening for somatoform disorders), a German questionnaire developed by Rief et al. (1997). It could be shown that somatoform complaints are less prevalent among young people, but still occur frequently.Most commonly mentioned were headaches, facial pain, backache, pains in the extremities, nausea and stomachache.Girls frequently mentioned menstrual pains.The socio-demographic variables “age” (14–19 vs. 20–25 yrs.),“gender” and “geographical region” (East vs.West Germany) proved to be unrelated to the prevalence of somatoform complaints in this age-group.By contrast to these findings on subjective complaints amongst young people, only one of the sample could be diagnosed as having a somatoform disorder in the sense defined by the DSM-IV or the ICD-10. This low rate of prevalence is the result of the extremely restrictive criteria defined for somatoform disorders by these diagnostic systems, which obscure the real frequency in the general population of somatoform syndromes requiring treatment.     

Locus of control in aging research: a case for multidimensional and domain-specific assessment

Do locus of control beliefs change in later life? Is locus of control related to aging-relevant outcomes involving intelligence and health? In past research on these topics, the use of unidimensional and generalized measures of locus of control has led to a set of inconsistent findings. Three studies were conducted to examine the usefulness of multidimensional and domain-specific measures of locus of control for examining age differences and correlates. College students and elderly adults were compared on Levenson's multidimensional and generalized (internal, chance, and powerful others) locus of control scales and two domain-specific versions related to intelligence and health. As predicted, no age differences were found with generalized measures, but the elderly were more external on intelligence- and health-specific locus of control dimensions. Age differences were found most often on the chance and powerful others control dimensions, suggesting that the elderly acknowledge the importance of external sources of control and at the same time preserve their sense of internal control. In addition, the domain-specific scales were better predictors of behavioral outcomes within their respective domains for the elderly but not for the young. The findings suggest that multidimensional and domain-specific conceptions of control are advantageous for aging research.     

Confirmatory Factor Analysis and Profile Analysis via Multidimensional Scaling

This paper describes the Confirmatory Factor Analysis (CFA) parameterization of the Profile Analysis via Multidimensional Scaling (PAMS) model to demonstrate validation of profile pattern hypotheses derived from multidimensional scaling (MDS). Profile Analysis via Multidimensional Scaling (PAMS) is an exploratory method for identifying major profiles in a multi-subtest test battery. Major profile patterns are represented as dimensions extracted from a MDS analysis. PAMS represents an individual observed score as a linear combination of dimensions where the dimensions are the most typical profile patterns present in a population. While the PAMS approach was initially developed for exploratory purposes, its results can later be confirmed in a different sample by CFA. Since CFA is often used to verify results from an exploratory factor analysis, the present paper makes the connection between a factor model and the PAMS model, and then illustrates CFA with a simulated example (that was generated by the PAMS model) and at the same time with a real example. The real example demonstrates confirmation of PAMS exploratory results by using a different sample. Fit indexes can be used to indicate whether the CFA reparameterization as a confirmatory approach works for the PAMS exploratory results.     

老年人特殊生活事件的应对意向与情境性应对

该研究旨在对老年人合法权益受侵此类特殊生活事件的应对意向（ＣＩ）和情境性应对（ＳＣ）进行比较分析,多元因素分析结果鉴别出应对意向的五种方式及其三种基本类型,以及六种情境性应对方式和四种应对类型。研究也发现今老年人采用不同方式的ＣＩ和ＳＣ的旨弱程度存在的异同点。同时,多元回归分析结果表明,年龄、文化程度、经济状况和法规了解程度是影响ＣＩ和ＳＣ的显著因素,此外健康状况和性别也分别对ＣＩ和ＳＣ产生影响。     

Theory of mind in non-suicidal self-injury (NSSI) adolescents

The aim of the present study is to investigate different facets of the theory of mind (ToM), i.e. first vs. third-person, first vs. second-order ToM, egocentric vs. allocentric perspective, in a clinical sample of 20 non-suicidal self-injury (NSSI) adolescent inpatients and 20 healthy controls.Methods: We investigated whether performance in ToM tasks was related to both the type and frequency of self-injuring behavior and attitude toward life and death, using a semi-structured interview and different self-report questionnaires.Results: NSSI participants performed less well than the control group in all the ToM dimensions investigated. Furthermore, ToM performance was negatively related to Attraction to Death, in terms of both the type and frequency of self-injuring behavior, and it was positively related to Attraction to Life.Conclusions: These preliminary findings have interesting implications for future clinical investigations, in that they provide previously unavailable information regarding the association between ToM and NSSI behavior.     

The assessment of school engagement: examining dimensionality and measurement invariance by gender and race/ethnicity

The construct of school engagement has attracted growing interest as a way to ameliorate the decline in academic achievement and increase in dropout rates. The current study tested the fit of a second-order multidimensional factor model of school engagement, using large-scale representative data on 1103 students in middle school. In order to make valid model comparisons by group, we evaluated the extent to which the measurement structure of this model was invariant by gender and by race/ethnicity (European-American vs. African-American students). Finally, we examined differences in latent factor means by these same groups. From our confirmatory factor analyses, we concluded that school engagement was a multidimensional construct, with evidence to support the hypothesized second-order engagement factor structure with behavioral, emotional, and cognitive dimensions. In this sample, boys and girls did not substantially differ, nor did European-American and African-American students, in terms of the underlying constructs of engagement and the composition of these constructs. Finally, there were substantial differences in behavioral and emotional engagement by gender and by racial/ethnic groups in terms of second-order factor mean differences.     

The Negative Physical Self Scale: Initial development and validation in samples of Chinese adolescents and young adults

This research presents four studies on the initial development and validation of the 48-item Negative Physical Self Scale (NPS), a multidimensional measure of body image concerns for use with Chinese samples. In Study 1 (N = 1095), exploratory factor analyses identified five dimensions underlying the NPS (General Appearance, Facial Appearance, Shortness, Fatness, Thinness). In Study 2 (N = 1057), confirmatory factor analyses replicated this factor structure. In Studies 3 and 4, the validity of all NPS dimensions except Thinness Concern was supported via their patterns of relation with both objective physical characteristics/behaviors and other self-report measures of body image and general self worth. Because Chinese adolescents and young adults expressed relatively more concerns about General Appearance, Shortness, and Facial Appearance than about Fatness, the NPS may have greater utility for assessing body image disturbances in China than existing measures that focus exclusively on general body satisfaction and body size/weight.     

A monte carlo evaluation of three nonmetric multidimensional scaling algorithms

As a consequence of the complexity of the iterative optimum seeking procedures used by practical nonmetric multidimensional scaling algorithms, many of their computational properties have not been well understood. In particular, the following questions are of interest: (a) from the user's point of view, are there significant differences between alternative available programs, (b) are suboptimal solutions frequently encountered, and how does this depend on the characteristics of the algorithm? Using Monte Carlo techniques to generate dissimilarity matrices with known underlying configurations, Kruskal's M-D-SCAL, Guttman-Lingoes' SSA-I, and Young-Torgerson's TORSCA-9 programs were compared. It was found: (a) that differences between the solutions obtained by the algorithms were typically so small as to be of little practical importance, (b) deviant solutions were occasionally produced by each of the algorithms, but most often by M-D-SCAL, and furthermore, most frequently in one dimension. The likelihood of being trapped in a nonoptimal position is reduced by a good choice of initial configuration, and also possibly by constructing the iterative process to favor the possibility of stepping over small local depressions when far from the location of the optimum. The conclusions of this study are based on a total of 2160 scaling solutions.     

Factor Structure of the Burden Interview

Zarit's Burden Interview is the most commonly used measure of burden among family caregivers for demented older adults, but has been criticized for its diverse item content and lack of correspondence to theoretically based multidimensional burden scales. The factor structure of this measure of burden was examined in a sample of 220 family caregivers of demented elderly. The implied 1-factor model and a 2-factor model proposed in the literature were not good fits to the data. Fourteen of the 21 nonglobal items were found to tap three underlying factors of Embarrassment/Anger, Patient's Dependency, and Self-criticism. This factor structure was replicated in a second sample of 108 caregivers. The relationship of these factors to latent factors identified in other multifactorial burden scales suggests a greater degree of convergence across measures than has been assumed.     

Meaning in life of young and elderly adults: An examination of the factorial validity and invariance of the Life Regard Index

The main question of the present investigation was whether the Life Regard Index (LRI) is an adequate instrument to study possible differences between young and elderly adults with regard to experienced meaning in life. Participants in this study were a group of 206 young adults (M= 17.8 years, 49.0% female) and a group of 373 elderly adults (M = 65.90 years, 58.8% female). Respondents completed a Dutch paper-and-pencil version of the LRI. The LISREL confirmatory factor analytic model was used to test for the equivalence of measurement and of structure of the instrument. Results show that in both age groups the items of the LRI were found to be distributed to the two a priori dimensions of meaning in life, Framework and Fulfillment. Only the factor loadings of the Framework items were invariant across both groups. Neither the error of measurement, nor the structure of the underlying concept were equivalent for young and elderly adults. Young adults were found to experience less meaning in life than the elderly.     

Religion and aging

Life history data and cultural values are used to suggest ways in which personal and social beliefs influence the quality of experiences of aging. Central questions are the extent to which an individual can select beliefs that lead to a longer, more meaningful life and the special influence that religion may have in enhancing aging. Responsiveness to needs of the elderly is a necessary component of enlightened planning for the future. Secularization and industrialization have diminished roles and expectations for the elderly. Religion may be an effective means to identify these concerns and improve the quality of life of older people.     

A conditional process model of perfectionism,goal-realization,and post-competition mood

Research has recently begun to examine the relationship between multidimensional perfectionism and athletes’ post-competition mood. However, to date, there have been few attempts to examine the interaction between dimensions of perfectionism or model possible explanatory processes. To address these limitations, in the current study we tested a novel conditional process model whereby the relationship between perfectionistic strivings and post-competition affect was mediated by the degree to which goals were considered to have been met (goal-realization) and that this indirect effect was, in turn, moderated by levels of perfectionistic concerns. We tested this model in a sample of 251 athletes who took part in a “Runmageddon” event - a cross-country obstacle race. Athletes completed measures of perfectionism (perfectionistic strivings and perfectionistic concerns) before the race and measures of goal-realization and mood (tense arousal, energetic arousal, and hedonic tone) between 24 and 48 h after the race. Analyses revealed that perfectionistic strivings were indirectly linked to a more unpleasant post-competition mood (higher tense arousal and lower hedonic tone) via perceptions of lower goal-realization. In addition, these two indirect effects were statistically significant only when perfectionistic concerns were medium and high. The results support the proposed conditional model and suggest the interplay between dimensions of perfectionism is important for athletes’ post-competition mood, and the level of perfectionistic concerns, especially.     

Completely nonmetric multidimensional scaling

Most of the distance models underlying multidimensional scaling assume that if a stimulus y is between the stimuli x and z on each dimension, then x and z should be the farthest apart of the three stimuli. An iterative algorithm is described that uses only this betweenness prediction to infer the ordering of a set of stimuli on each of one or two dimensions. Applied to previously published semantic similarity data, this algorithm produced two-dimensional configurations that were similar in appearance to Euclidean configurations but generally involved fewer violations of the betweenness prediction.     

A study of satisfactions and stresses of single women in midlife

Sixty single women 35 to 65 years old, previously married or never married, were interviewed about the satisfactions and stresses of the single status. Respondents were categorized as having high, medium, or low life satisfaction. Life satisfaction was found to be significantly correlated to such factors as good health, not being lonely, living with a female housemate, having many casual friends, and being invested in work. Half the women mentioned having sexual needs, which were or were not fulfilled. The other half stated that they did not have sexual needs. These two groups did not differ in life satisfaction. Regrets about not having had children occurred in one-quarter of the childless women, without necessarily implying low life satisfaction. Only 15% of the entire sample had low life satisfaction, a percentage similar to that found in the general population.The authors wish to express sincere appreciation to George Loewenstein for his aid with the computer analysis of the data.