Spatial versus tree representations of proximity data

In this paper we investigated two of the most common representations of proximities, two-dimensional euclidean planes and additive trees. Our purpose was to develop guidelines for comparing these representations, and to discover properties that could help diagnose which representation is more appropriate for a given set of data. In a simulation study, artificial data generated either by a plane or by a tree were scaled using procedures for fitting either a plane (KYST) or a tree (ADDTREE). As expected, the appropriate model fit the data better than the inappropriate model for all noise levels. Furthermore, the two models were roughly comparable: for all noise levels, KYST accounted for plane data about as well as ADDTREE accounted for tree data. Two properties of the data proved useful in distinguishing between the models: the skewness of the distribution of distances, and the proportion of elongated triangles, which measures departures from the ultrametric inequality, Applications of KYST and ADDTREE to some twenty sets of real data, collected by other investigators, showed that most of these data could be classified clearly as favoring either a tree or a two-dimensional representation.A portable PASCAL program implementing the Sattath and Tversky [1977] ADDTREE algorithm is available from J. Corter, Department of Psychology, Stanford University, Stanford, California 94305.     

Recall of common and distinctive features of verbal and pictorial stimuli

Subjects first rated similarity of verbal and of pictorial stimuli. The same pairs of stimuli were presented again, without one common component and one distinctive component. Subjects were asked to recall the missing components and identify them as common or distinctive. The results show that components encoded as common are recalled relatively better than components encoded as distinctive, and the difference in recall is significantly greater in verbal than in pictorial stimuli.     

Visual angle and the word superiority effect

Two experiments are reported in which a word superiority effect is obtained under conditions where a fixed set of alternatives are employed with positional certainty as to the critical letter, trial type (word or nonword) is mixed, and the subject is told to fixate the position of the critical letter. A third experiment employed the same methodology except for the fact that the stimuli subtended a larger retinal angle. No word superiority effect was observed in the third experiment. It is suggested that the visual angle of the stimulus display is a crucial factor in experiments on the word superiority effect.     

As the wheel turns: a centennial reflection on Freud's Three Essays on the Theory of Sexuality

Freud's theories of psychosexual development, while highly original, were anchored in the explosion of scientific studies of sex in the nineteenth century. Most of these studies were based on masturbation, homosexuality, and deviance, with little attention given to normal sexuality. Around the turn of the century, the narrow interest in pathological sexuality and sexual physiology gradually gave way to a broader interest in normal sexuality. It was in the context of these expanding studies of sexuality that Freud proposed the first psychological view of sexuality, a theory that defined sex as being at the interface between soma and psyche. Libido theory, which Freud developed, is a theory of drives and conflicts. For Freud, libido was the major force in personality development, and he posited sexual conflicts as the heart of neuroses, sexual fixations as the essence of perversions. This article traces the way Freud's libido theory has served as one of the mainsprings in the development of psychoanalytic theory. It also addresses the major revisions that have taken place in libido theory, with a focus primarily on object relations theory, and the impact of culture on the way sex and sexual mores are parsed.     

Does legally mandated consent to psychotherapy ensure ethical appropriateness?: the Colorado experience

We analyzed a sample of 356 forms containing information that Colorado law legally requires both licensed and unlicensed therapists to disclose to clients. The majority of forms contained the legally mandated information; fewer forms contained ethically desirable information. The average readability grade level was 15.74, corresponding to upper-level college, and 63.9% of the forms reached the highest (most difficult) readability grade of 17+. Therapists are obeying the law, but do not appear to be taking advantage of the opportunity to provide their clients useful information in an accessible way.     

Eastern versus Western Control Beliefs at Work: An Investigation of Secondary Control, Socioinstrumental Control, and Work Locus of Control in China and the US

La théorie et la recherche concernant les croyances (LOC) et les perceptions du contrôle suggèrent que les Asiatiques tendent à obtenir des scores plus bas et àêtre plus passifs que les Américains, mais ces travaux ont été menés à l’aide de concepts et d’échelles développés principalement aux USA qui certifient une primauté du contrôle interne (ex: en changeant l’environnement pour l’adapter à soi). Une équipe de recherche internationale a étendu la notion de croyance dans le contrôle en développant des échelles qui permettent de reconsidérer la notion en faisant état de croyances secondaires dans le contrôle (ex: en adaptant le soi à l’environnement) et de faire état d’un concept nouveau de croyances socio‐instrumentales (ex: le contrôle par les relations interpersonelles) qui permettent de rendre compte de manière plus pertinente des croyances en un contrôle dans les cultures collectivistes. Nous nous attendions à ce que, par l’utilisation d’échelles culturellement appropriées, les Américains n’obtiennent pas une croyance en un contrôle plus importante que les Asiatiques. Les hypothèses ont été partiellement confirmées en ce que les Américains se sont montrés comme obtenant un contrôle plus bas que les Chinois (de Hong Kong et de RP de Chine) sur ces échelles. Il est suggéré que voir les Asiatiques comme évitant passivement le contrôle au travail peut être incorrect et dû aux insuffisances de contrôle socio‐instrumental. Research and theory concerning beliefs (locus of control) and perceptions of control suggest that Asians tend to be lower and more passive than Americans, but this work has been conducted mainly with US‐developed constructs and scales that assess primary control (i.e. changing the environment to adapt to the self). An international research team expanded the notion of control beliefs by developing scales to assess secondary control beliefs (i.e. adapting the self to the environment) and the new construct of socioinstrumental control beliefs (i.e. control via interpersonal relationships), both of which were thought to better fit the control beliefs of collectivist cultures than Western‐developed control scales. We expected that, when culturally appropriate scales were employed, Americans would not show higher control beliefs than Asians. Hypotheses were partially confirmed that Americans would be lower than Chinese (Hong Kong and PR China) on these new scales. It is suggested that views of Asians as passive avoiders of control at work may be incorrect and due to the overlooking of socioinstrumental control.     

God and the evangelical laboratory: Recent conservative Protestant thinking about theology and science

This review essay surveys 14 recent texts on theology and science published by six different evangelical (conservative Protestant) publishing houses since 1999. The spectrum of evangelical-theological approaches to evolution, natural history, and origins-of-life issues are presented in these texts, as are evangelical-theological perspectives on the Intelligent Design phenomenon, on theological and scientific method, and on the philosophy of science. Summary observations about the status quaestiones of the theology-and-science discussion in the evangelical world at the beginning of the twenty-first century are provided, and future developments anticipated among conservative Protestants in their engagements with the sciences.     

Mental and Motor Switching in Parkinson's Disease

Switching difficulties in Parkinson's disease (PD) are expressed in both mental and motor tasks. The authors of the present study investigated whether those deficits coexist in the same patient and are positively correlated. They tested 8 nondemented PD patients and 6 age-matched control participants by using the modified Wisconsin Card Sorting Test and a motor switching paradigm that is based on the task of reaching toward visual targets, the location of which could unexpectedly be altered within the reaction time. In both mental and motor tasks, patients performed significantly worse than controls. There were no significant correlations between the two types of pathology in individual patients. Mental and motor switching deteriorate in PD patients, but the deficits are not necessarily of parallel severity.

basal ganglia     

Discrete Negative Emotions and Counterproductive Work Behavior

The current study investigates how seven discrete negative emotions are related to seven dimensions of counterproductive work behavior (CWB). We surveyed 240 employed students about the frequencies of their negative emotions and CWBs over a 1-month time frame. Correlational analyses revealed that almost all emotions correlated significantly with all forms of CWB, but there were significant differences in the magnitude of correlations between emotion–CWB pairs. Furthermore, a series of multiple regression analyses suggested that there were different patterns in the emotions that accounted for unique variance across different forms of CWB. This study suggests that the understudied emotions of boredom and shame might be particularly important to our understanding of CWB.