Measuring Experiential Avoidance: Reliability and Validity of the Dutch 9-item Acceptance and Action Questionnaire (AAQ)

Three studies evaluated psychometric properties of the Dutch version of the 9-item Acceptance and Action Questionnaire (AAQ)—a self-report measure designed to assess experiential avoidance as conceptualized in Acceptance and Commitment Therapy (ACT). Study 1, among bereaved adults, showed that a one-factor model, with AAQ-items constituting a single dimension of experiential avoidance, fitted the data well. The internal consistency and temporal stability of the AAQ were satisfactory. In Study 2, among undergraduate students, and Study 3, among 60 outpatients, higher AAQ scores were found to be significantly associated with psychopathology, maladaptive coping strategies, and neuroticism, attesting to the validity of the measure. In support of its incremental validity, Study 3 showed that the AAQ remained significantly associated with depression and anxiety after controlling for neuroticism and thought suppression. The current studies complement prior research supporting the psychometric properties of the AAQ and the ACT conceptualization of experiential avoidance.

Agency, properties and causation

The paper argues against the very commonly held view that whenever a substance may be said to be the cause of something, a fuller and metaphysically more accurate understanding of the situation can always be obtained by looking to the properties in virtue of which that substance was able to bring about the effect in question. Paul Humphreys’ argument that when a substance is said to have produced an effect, it always turns out to be an aspect or property of that substance which brought about the effect in question is examined and criticized; it is argued that it is based on an illegitimate application of Mill’s Methods of Difference and Agreement to the case. Mill’s methods, it is suggested, are methods of empirical, not of ontological enquiry. The paper then turns to examine an argument by Mele which appears to depend on a structurally rather similar assumption that if there is nothing about a subject which could explain why she does one thing rather than another, it cannot really be up to that subject which thing occurs. It is suggested that, too, the inference is faulty, and that once it is rejected, one common objection to libertarianism—the argument from luck—might be more readily met.     

From Semirings to Residuated Kleene Lattices

We consider various classes of algebras obtained by expanding idempotent semirings with meet, residuals and Kleene-*. An investigation of congruence properties (e-permutability, e-regularity, congruence distributivity) is followed by a section on algebraic Gentzen systems for proving inequalities in idempotent semirings, in residuated lattices, and in (residuated) Kleene lattices (with cut). Finally we define (one-sorted) residuated Kleene lattices with tests to complement two-sorted Kleene algebras with tests.     

客体特征统计属性表征机制的特异性

通过两个实验就视觉系统能否像计算平均数那样高效地计算其他统计量的问题进行了探讨。实验—保持—组圆的平均大小不变而改变众数,考察平均数估计是否受众数变化的影响;实验二采用与实验一相同的刺激,直接考察被试估计众数的绩效。结果发现：（1）对平均数的估计不受总体众数变化的影响;（2）对众数的估计往往不如对平均数的估计准确,估计值受平均数变化的影响;（3）在估计众数的任务中,被试成绩受总体极大值的影响。上述结果表明,视觉系统不存在针对众数的自动化加工机制。根据本实验的结果可以进一步推测,视觉系统并非对所有统计量都可做高效加工,而可能存在针对平均数的特异加工机制。     

Structural equation models with continuous and polytomous variables

A two-stage procedure is developed for analyzing structural equation models with continuous and polytomous variables. At the first stage, the maximum likelihood estimates of the thresholds, polychoric covariances and variances, and polyserial covariances are simultaneously obtained with the help of an appropriate transformation that significantly simplifies the computation. An asymptotic covariance matrix of the estiates is also computed. At the second stage, the parameters in the structural covariance model are obtained via the generalized least squares approach. Basic statistical properties of the estimates are derived and some illustrative examples and a small simulation study are reported.This research was supported in part by a research grant DA01070 from the U. S. Public Health Service. We are indebted to several referees and the editor for very valuable comments and suggestions for improvement of this paper. The computing assistance of King-Hong Leung and Man-Lai Tang is also gratefully acknowledged.     

The Beck Anxiety Inventory: Psychometric Properties with Older Adults

The assessment of anxiety disorders in late life is often hindered by the lack of measures specifically validated with older adults. Because anxiety manifestations may vary across age groups, it is important to design new instruments or validate existing measures with older adults. This study examined the psychometric properties of the Beck Anxiety Inventory (BAI) in a sample of 281 older adults who were community-dwelling (82.6%) or living in residential care facilities (17.4%). The mean total BAI score was 6.5 (SD = 7.2), indicating minimal anxiety symptomatology in this older sample. There was a trend for older subjects to score higher. Females scored higher than males, and subjects living in a residential facility scored higher than did community dwellers. Item-total correlations were in the moderate range and the internal consistency of the BAI was adequate (alpha = 0.89). A factor analysis yielded a six-factor structure accounting for 64.6% of the variance, with a somatic factor accounting for the largest portion of the variance (32.2%). Because somatic symptoms are more prevalent with aging, such symptoms should not be weighed as heavily in the total BAI score as cognitive or behavioral symptoms. The findings indicate that the BAI is a useful self-report scale for assessing anxiety symptomatology among older adults.     

Psychometrics properties of the Swansea Muscularity Attitudes Questionnaire (SMAQ)

The psychometric soundness of the Swansea Muscularity Attitudes Questionnaire (SMAQ) was examined using two independent samples of Canadian male post-secondary students (Ns = 250 and 310, respectively). Exploratory and confirmatory factor analyses suggested that the final 19-item version of the SMAQ is represented by three latent constructs, which we have labeled: intention to become more muscular (eight-items), positive attributes of muscularity (nine-items), and engagement in muscle-building activities (two-items). Alpha coefficients for the intention and positive subscales were very good (i.e., range = .86–.92). Correlation coefficients between the two-items comprising the engagement subscale also suggest that they can be combined into a composite measure (rs = .70 [study 1] and .58 [study 2]). Various tests of criterion-related and construct validity were conducted, with results indicating that the SMAQ subscales are valid indicants of the drive for muscularity.     

Psychometric Properties of the Dutch BIS/BAS Scales

This study examined the reliability, factor structure, and convergent validity of the Dutch version of C. S. Carver and T. L. Whites (1994) Behavioral Approach System and Behavioral Inhibition System Scales (BIS/BAS Scales). For this purpose, the BIS/BAS Scales, a shortened version of the Eysenck Personality Questionnaire (EPQ), and the Dickman Impulsivity Inventory (DII) were administered to 246 undergraduate students in The Netherlands. The internal consistency of the BIS/BAS Scales was sufficient. Further, exploratory and confirmatory factor analysis showed that the Dutch BIS/BAS Scales have a factor structure similar to the English version. Finally, BIS/BAS Scales were found to correlate in a theoretically meaningful way with extraversion, neuroticism, psychoticism, and impulsivity.     

Semantic Analysis of some Variants of Anderson-like Ontological Proofs

The aim of this paper is to prove strong completeness theorems for several Anderson-like variants of Gödels theory wrt. classes of modal structures, in which: (i). 1st order terms order receive only rigid extensions in the constant objectual 1st order domain; (ii). 2nd order terms receive non-rigid extensions in preselected world-relative objectual domains of 2nd order and rigid intensions in the constant conceptual 2nd order domain.     

The Atomistic Self versus the Holistic Self in Structural Relation to the Other

I argue that meaning or significanceper se, along with the capacity to be conscious thereof, and the values, motives and aspirations, etc. central to the constitution of our intrinsic personal identities, arise, as indeed do our extrinsic social identities, and our very self-consciousness as such, from socio-cultural structures and relations to others. However, so far from our identities and behavior therefore being determined, I argue that the capacity for critical reflection and evaluation emerge from these same structural relations, the more complex and quintessentially human aspects of our behavior being explained not in terms of responses to stimuli but as choices reflecting our evaluation of meaningful or significant alternatives. Finally I provide theoretical grounds for accepting the existence of other subjects and give a holistic, as opposed to a dialectical, account of the way individuals may challenge and change the very socio-cultural ways of relating to and interacting with others so central to constituting their capacities and identities.