Local-global processing in obsessive-compulsive disorder and comorbid Tourette's syndrome

Neuropsychological and neuroimaging studies implicate attentional difficulties in obsessive-compulsive disorder (OCD), but results are inconsistent due possibly to sample heterogeneity and lack of control of comorbid disorders, such as Tourette's syndrome (TS). Nevertheless, it has been suggested that OCD symptomatology may be a result of over-focused attention at a local level. Therefore, this study aimed to examine the ability of OCD patients (pure and comorbid OCD + TS) to process local and global stimuli. Using a local-global paradigm, participants were required to respond to the directed level (local or global) of various stimuli. Results indicate that pure OCD participants were impaired on the global task, whereas comorbid OCD + TS participants had difficulty processing local information. Results are consistent with previously reported lateralisation anomalies and suggest that OCD negatively affects the ability to process hierarchically presented stimuli.     

The emotional adjustment of children with Tourette's syndrome

We investigated the predictive value of family reaction and illness severity with respect to the emotional adjustment of Tourette's syndrome patients. The subjects included 30 children with Tourette's syndrome and 30 control subjects matched on age, sex, race, and socioeconomic status. The predictor variables included the child's perception of parental behavior, family adaptability as perceived by the mother, mother's self-concept, and illness severity. The results indicated that the children's perceptions of their parents' behavior explained the most variance in children's self-concepts and anxiety for both groups. These findings highlight the importance of the parent-child interaction in predicting the child's emotional adjustment to Tourette's syndrome.     

Assumptions underlying psychological testing

Tests purporting to reflect the learning aptitudes of school children differ much more than generally is recognized. However, error in assesing such learning aptitude inheres much more in the users of the tests than in the tests themselves. Assumptions fundamental to such assessment, or even testing, are considered. It is particularly important that the assessor, or tester, constantly be sensitive to the nature of the relationship between the psychological demands of test items or tests and the learning demands confronting the child. Even tests that generally are grossly or crudely used often can yield psychoeducationally meaninful information if their results are differentially perceived in terms of the light they throw on the psychological operations fundamental to learning, “process,” as contrasted with that thrown on the results of the functioning of such operations, “product.”     

Assumptions underlying psychological testing

Tests purporting to reflect the learning aptitudes of school children differ much more than generally is recognized. However, error in assesing such learning aptitude inheres much more in the users of the tests than in the tests themselves. Assumptions fundamental to such assessment, or even testing, are considered. It is particularly important that the assessor, or tester, constantly be sensitive to the nature of the relationship between the psychological demands of test items or tests and the learning demands confronting the child. Even tests that generally are grossly or crudely used often can yield psychoeducationally meaninful information if their results are differentially perceived in terms of the light they throw on the psychological operations fundamental to learning, “process,” as contrasted with that thrown on the results of the functioning of such operations, “product.”     

The semantic Simon effect in Tourette's syndrome and obsessive-compulsive disorder

Core symptoms of Tourette's syndrome (TS) and obsessive-compulsive disorder (OCD) may be attributed to an impairment in inhibitory control. Neuropsychological studies have addressed inhibition in both disorders, but findings have been inconsistent. The aim of this study was to examine cognitive inhibition, using a semantic Simon effect paradigm, in patients with TS and OCD. Furthermore, to address comorbidity a group of TS+OCD patients was also examined. Results indicated that patients with TS and OCD were affected by the inhibitory components of the task. TS groups performed similarly to controls on simple and choice RT tasks, but were particularly compromised as increasingly complex inhibitory demands were imposed. OCD patients were slower and committed more errors than controls, especially in the more cognitively demanding conditions, and were particularly disadvantaged by incongruent stimulus-response compatibilities. Findings implicate possible fronto-striatal dysfunction, are consistent with previously reported inhibitory deficits in TS and OCD, and support the theory that comorbid TS+OCD is more closely linked to pure TS than OCD.     

Hand-scoring error rates in psychological testing

Despite the comprehensive treatment of test validity in most technical manuals, test authors appear to routinely assume that clients and professionals will score their instruments without error. Recently Allard and Faust challenged this assumption by suggesting that error rates "may not be rare or benign" and demonstrated that tests with more complex scoring procedures were associated with a greater number of scoring errors. This study investigated error rates that resulted from hand scoring seven psychometric tests commonly employed in psychological practice. Significant and serious error rates were identified for both psychologist and client scorers across all tests investigated. Scoring complexity was found to predict the base rate of scorer errors. The findings suggest that greater development in and attention to test-scoring procedures is required to restrict the likelihood of scorer error.     

The development of psychological testing in China

The Chinese have been interested in assessing individual differences for thousands of years. This article traces the development of early psychological measurements in China through to the arrival of modern psychometric techniques in the early 20th century. Following the social disruption caused by the Sino‐Japanese War and the Chinese Civil War, the doctrines of the Communist Revolution and finally the Cultural Revolution forced the total abandonment of the idea of measuring individual differences. Since the end of the Cultural Revolution in the 1970s, however, the need for psychological measurement has been increasingly recognised, particularly because of needs in the fields of clinical and educational practice. As a result, there are now many university courses for training testing professionals. It is also important to have tests that are suitable to use in China. Simply to translate English‐language tests into Chinese may bias their results because of cultural differences, so tests should be revised in order to make their results equivalent, or new tests appropriate to their culture should be devised by Chinese psychologists. Psychological testing is now used in China in education, mental health, and, increasingly, in personnel selection. The expanding market economy means that effective processes for the selection of managers in business and industry are essential in China. As in many other scientific fields, the Chinese are making progress in psychometric testing and it is likely that psychological measurement of individual differences will make an important contribution to China's continued rapid economic progress in the 21st century.     

A self-contained microcomputer system for psychological testing

This paper describes a newly available microcomputer system for the on-line administration, scoring, and interpretation of psychological tests. User response to the system is reported. Results of a validity study of the system’s Minnesota Multiphasic Personality Inventory interpretative program are presented.     

Behavioral conceptualizations and treatments of Tourette's syndrome: A review and overview

This article reviews behavioral conceptualizations and approaches to the treatment of Tourette's Syndrome. The main purpose of the review is to point out the importance of associated aberrant behaviors that frequently coincide with Tourette's and discuss the efficacy of behaviour therapy as a viable option in the treatment of the disorder. There is discussion of past and present treatments, as well as comments on possible future directions in the behavioral treatment of the disorder.     

Dimensions in data: testing psychological models using state-trace analysis

Cognitive science is replete with fertile and forceful debates about the need for one or more underlying mental processes or systems to explain empirical observations. Such debates can be found in many areas, including learning, memory, categorization, reasoning and decision-making. Multiple-process models are often advanced on the basis of dissociations in data. We argue and illustrate that using dissociation logic to draw conclusions about the dimensionality of data is flawed. We propose that a more widespread adoption of 'state-trace analysis'--an approach that overcomes these flaws--could lead to a re-evaluation of the need for multiple-process models and to a re-appraisal of how these models should be formulated and tested.     

Ageism and psychological testing with elderly immigrant women

The focus on aging and ageism are fairly recent in psychology. Nevertheless, it is clear that these processes are of particular interest to many psychologists involved in psychological assessment, since both of these affect the content and the process of the assessment. In the present paper some key issues are raised regarding ageism and stereotypes of the aging held by mental health professionals and psychologists in particular. On the assumption that psychological testing with the aging is required to achieve accurate diagnoses and therapeutic interventions, some concerns about how psychological testing with the aging should proceed is presented.     

Decreased volume of the cerebral ventricles on CT images in Gilles de la Tourette's syndrome

The aim of the present study was to estimate the volume of the ventricular system comprising lateral plus third ventricles in patients with Gilles de la Tourette's syndrome on computed tomographic (CT) scannings using unbiased stereological principles and to compare that volume with a control group. We found a significantly reduced ventricular volume in 24 patients with Gilles de la Tourette's syndrome (GTS) compared with 28 controls.     

Cognitive behavioral management of Tourette's syndrome and chronic tic disorder in medicated and unmedicated samples

Objective

Cognitive behavior therapy (CBT) and medication can be administered in combination in treating tic disorders but there are no studies evaluating the effectiveness of CBT with and without medication. The current study compares the efficacy of CBT in combination with medication and without medication.

Method

CBT was administered in a consecutively referred sample of 76 people diagnosed either with Gilles de la Tourette Syndrome or chronic tic disorder. The sample was divided into a medicated and a non-medicated group. Twenty three were stabilized on medication and 53 were not receiving medication. Measures administered pre- and post-CBT in both groups included: main outcome measure of Tourette Syndrome Global Scale and measures of mood.

Results

Repeated measures analysis of variance on the initial sample revealed no difference between medicated and non-medicated groups in outcome. A further analysis comparing the 23 receiving medication with 23 not receiving medication matched on baseline clinical variables also yielded no significant group differences, either in treatment outcome on main tic outcome measures or on other clinically relevant questionnaires.

Discussion

CBT for tic disorders is an effective treatment administered either in combination with medication or alone.