Psychometric Validation of the Temptation and Restraint Inventory in Two Samples of College Drinkers1

Drinking restraint, commonly measured by the Temptation and Restraint Inventory (TRI; Collins & Lapp, 1992), refers to a cycle of temptation to drink alcohol and attempts to control alcohol use that results in excessive consumption. Recent research has examined college drinkers using the TRI, however, it has been validated only in adult samples. This study validated the TRI in two samples of college drinkers, designated as “hazardous” (n = 480) and “harmful” (n = 231) drinkers. Using confirmatory factor analysis, the previously reported higher order two-factor structure was identified in both samples. In addition, multiple regression analyses using derived component scores demonstrated that TRI performance was associated with degree of alcohol dependence in both samples. These data support the use of the TRI in college samples.These data were previously presented in November 2002 at the 36th annual meeting of the Association for the Advancement of Behavior Therapy, Reno, NV     

Exercise Dependence: Diagnostic and Therapeutic Issues for Patients in Psychotherapy

Health promotion and exercise is recognized as an important ingredient in health maintenance. Within the diagnostic category of obsessive-compulsive disorders has been the increased recognition by clinicians of a phenomena best described as exercise dependence. Reviewed herein is its definition, theoretical framework and a spectrum of factors often associated with exercise. Realizing that exercise dependence as a clinical entity is not yet recognized in either the International Classification of Disorders (ICD-9) or the Diagnostic and Statistical Manual (DSM-IV-R), proposed criteria for its inclusion are offered. Where a pattern of behavior shows the presence of symptoms consistent with exercise dependence, clinical diagnosis should be made to assure that appropriate treatment might be offered to manage the condition and continue to make exercise an important part of a healthy lifestyle. Diagnostic and therapeutic considerations are offered for the contemporary psychotherapist.     

中国传统经济伦理及其现代变革论纲

要建设社会主义市场经济体系,必须对传统经济伦理进行根本的变革：(1)变革“重公轻私”的产权伦理;(2)变革“不患贫而患不均”的分配伦理;(3)变革通行于熟人社会的“诚信”道德;(4)变革“家庭主义”。但由于存在着制度变迁的路径依赖,因而“传统经济伦理”的现代变革将是一个相当困难的过程。     

Factor copula models for mixed data

We develop factor copula models to analyse the dependence among mixed continuous and discrete responses. Factor copula models are canonical vine copulas that involve both observed and latent variables, hence they allow tail, asymmetric and nonlinear dependence. They can be explained as conditional independence models with latent variables that do not necessarily have an additive latent structure. We focus on important issues of interest to the social data analyst, such as model selection and goodness of fit. Our general methodology is demonstrated with an extensive simulation study and illustrated by reanalysing three mixed response data sets. Our studies suggest that there can be a substantial improvement over the standard factor model for mixed data and make the argument for moving to factor copula models.     

长期戒断海洛因成瘾者冲动性相关脑区的结构及功能特征

冲动性是药物成瘾者的典型特征, 它既包含了抑制控制成瘾者药物使用的力量, 也包含驱动成瘾者使用药物的成分, 两者不平衡导致冲动性用药行为。海洛因成瘾者本身具有冲动性人格特质, 长时间的海洛因使用又会造成成瘾者冲动性相关的大脑结构与功能的异常。目前难以确定戒断后, 冲动性及相关的大脑结构与功能是否还呈异常状态。本研究采用基于体素的形态学分析、低频振幅、局部一致性和功能连接方法, 以35例海洛因成瘾戒断者和无任何成瘾史的健康个体26人为研究对象, 探索在长期戒断后, 海洛因成瘾者与其冲动性相关的驱动、控制系统脑网络的结构和功能情况。结果显示, 相比对照组, 戒断组灰质总体积及右内侧额上回的灰质体积显著减小, 右侧颞中回和左内侧旁扣带回的灰质体积随用药总量的增加而降低; 右侧眶部额下回与尾状核功能连接显著增强, 右侧颞中回和左侧中央前回功能连接显著降低; 右眶额中回的ReHo值、右眶额下回和左海马体的ALFF值比对照组显著更低, 而右中央后回的ReHo值显著更高。这些脑区的状况与冲动性的神经基础相吻合, 说明海洛因成瘾戒断者在戒断44个月, 奖赏、凸显、习惯性行为等网络系统仍然呈现异常状态, 且与成瘾药物使用总量有关。这些异常可能是成瘾冲动性的驱动力的神经基础, 可以作为解释成瘾者戒断后容易复吸的因素之一。     

From ultrafast to slow: Heating rate dependence of the glass transition temperature in metallic systems

When a solid crosses the glass transition, viscous flow sets in and the glass transforms into a supercooled liquid. The glass transition temperature exhibits a heating rate dependence which was previously observed to follow a Vogel–Fulcher–Tammann (VFT) equation. Here we report on a change in the heating rate dependence of the glass transition, determined by the distinct increase in the specific heat capacity, of a metallic glass. We combine standard techniques such as differential scanning calorimetry with recently developed ohmic heating techniques in order to cover seven orders of magnitude in heating rate. Contrary to previous reports, our results show that the change of the glass transition temperature cannot be described by a single VFT equation. Instead we find two distinct regimes which independently follow a VFT expression.     

Serial dependence in face attractiveness judgements tolerates rotations around the yaw axis but not the roll axis

Once a face is detected, its retinal image will be continually distorted by changes in eye position, noise, lighting and many other factors. Yet from one moment to the next our perception of a face is stable. Recent advances have indicated there is a mechanism for achieving the continuous perception of a person’s identity that pools across prior and present visual inputs. There is still debate as to whether the perception of face attractiveness is also serially dependent. Here we investigate continuity in the perception of attractiveness using a one back [t?1] effect as a marker of serial dependence. Our results show that face attractiveness is biased towards the attractiveness of the previous face, and that this effect is robust despite changes in viewpoint involving rotations around the yaw axis. However, face attractiveness perception is released from this form of rapid adaption when the previously seen face differed in orientation due to a rotation around the roll axis.     

Profiles of exercise dependence symptoms in Ironman participants

ObjectiveTo identify distinct profiles of Ironman participants based on levels of exercise dependence, and examine whether these profiles differed in relation to eating patterns and psychological distress.DesignCross-sectional survey study of 345 Ironman participants in Australia.Main outcome measuresExercise dependence symptoms were assessed via the Exercise Dependence Scale. Eating patterns were assessed via the three-factor eating questionnaire, and psychological distress measured using the Kessler 6 scale.ResultsLatent profile analysis identified five distinct profiles based on responses to the Exercise Dependence Scale, which were labelled: Asymptomatic; Time Committed; Low psychological dependence; Symptomatic; and At-risk. The At-risk and Symptomatic profiles had less healthy eating patterns and higher psychological distress compared with the other profiles.ConclusionsThese findings suggest important individual differences in the nature and severity of exercise dependence symptoms in Ironman participants. The majority of Ironman participants appeared to have a healthy involvement with Ironman. However, approximately 30% of Ironman participants belonged to the At-risk and Symptomatic profiles, which could reflect maladaptive patterns of exercise.     

Using implicit attitudes of exercise importance to predict explicit exercise dependence symptoms and exercise behaviors

Objectives“Fast” (i.e., implicit) processing is relatively automatic; “slow” (i.e., explicit) processing is relatively controlled and can override automatic processing. These different processing types often produce different responses that uniquely predict behaviors. In the present study, we tested if explicit, self-reported symptoms of exercise dependence and an implicit association of exercise as important predicted exercise behaviors and change in problematic exercise attitudes.DesignWe assessed implicit attitudes of exercise importance and self-reported symptoms of exercise dependence at Time 1. Participants reported daily exercise behaviors for approximately one month, and then completed a Time 2 assessment of self-reported exercise dependence symptoms.MethodUndergraduate males and females (Time 1, N = 93; Time 2, N = 74) tracked daily exercise behaviors for one month and completed an Implicit Association Test assessing implicit exercise importance and subscales of the Exercise Dependence Questionnaire (EDQ) assessing exercise dependence symptoms.ResultsImplicit attitudes of exercise importance and Time 1 EDQ scores predicted Time 2 EDQ scores. Further, implicit exercise importance and Time 1 EDQ scores predicted daily exercise intensity while Time 1 EDQ scores predicted the amount of days exercised.ConclusionImplicit and explicit processing appear to uniquely predict exercise behaviors and attitudes. Given that different implicit and explicit processes may drive certain exercise factors (e.g., intensity and frequency, respectively), these behaviors may contribute to different aspects of exercise dependence.     

Influence of strain rate on the orientation dependence of microstructure in nickel single crystals

The deformation microstructures of nickel single crystals (99.945 wt.%) during dynamic plastic deformation and quasi-static compression to a true strain of 0.20 were comparatively investigated. The deformation microstructures are orientation dependent, forming cell structure, slip plane aligned or not slip plane aligned extended boundaries. It is found that the orientation spread decreases, remains unchanged and becomes enhanced when loading along 〈0?0?1〉, 〈0?1?1〉 and 〈1?1?1〉, respectively, as strain rate increases.