Test-retest reliability of the seated Functional Rotation Test in people with Parkinson's disease: a preliminary study

This study established the test-retest reliability of a seated Functional Rotation Test monitoring hand-pointing, together with head and trunk-rotation performance, in people with Parkinson's disease. An ancillary purpose was to establish the concurrent validity between the Functional Rotation Test and an electrogoniometer. 10 males with Parkinson's disease (M age=70.5 yr.; Hoehn and Yahr staging severity ranging from II to IV) were recruited. Subjects were fitted with laser-pointing devices, sat in the Functional Rotation room, and were instructed to turn actively and point to their right (or left) as far as they could comfortably manage. Tagged projections were scored (in degrees). Testing was repeated after a brief interval. Electrogoniometer projected locations were compared with Functional Rotation Test scores. Intraclass correlation coefficients (.91 to .97) indicated excellent test-retest reliability. There was also excellent agreement between electrogoniometric and Functional Rotation Test values (Intraclass correlation coefficients=.99). Thus the Functional Rotation Test provides a replicable measure of axial rotation of head, trunk, and hand-pointing in seated subjects with Parkinson's disease.     

Development of an evaluation scale for sitting and standing from the ground for children with Duchenne muscular dystrophy

The authors developed an evaluation scale for sit-stand from the ground for children with Duchenne muscular dystrophy (DMD) and tested its reliability. The construction occurred in stages: (a) the characterization of the movement in healthy children, (b) the characterization of the movement in children with DMD, (c) the elaboration of the 1st version of the scale and the manual, (d) the evaluation by experts and readjustments, and (e) the analysis of inter- and intraexaminer reliability and correlation with the Vignos Scale, age, and time for the execution of the activity. The scale comprehended 3 phases for sitting and 5 for the standing. A very good repeatability of the measures of sitting and standing (ICC = 0.89 and 0.84, respectively) and excellent reproducibility (ICC = 0.93 and 0.92, respectively) was demonstrated. The Kappa coefficient for the 8 phases in the interexaminer analysis varied from 0.77 to 1.00 (excellent reliability), and in the intraexaminer analysis varied from 0.80 to 1.00 (excellent reliability). Good correlation was found between the variables on the Vignos Scale (age: r = 0.58; stand: r = 0.56). The scale is a reliability instrument that allows evaluation of the activity of sitting and standing in children with DMD.     

Vertical force and wrist deviation angle when using a walker to stand up and sit down

Research investigating walkers suggests that safety and assistance for the elderly with weak lower limbs were important. However, the relationship between the use of a walker and the upper limbs has received little investigation. Standing up and sitting down are important daily activities. Therefore, the aim of this study was to explore wrist deviation and vertical force among elderly individuals using a walker for assistance to stand up and sit down. In total, 64 elderly volunteers (M age = 80.22, SD = 9.36) were enrolled. Data were obtained from four load cells and a twin-axis wrist goniometer. Wrist deviation and vertical force were examined when participants used a walker with horizontal handles to assist in standing up and sitting down. Significant wrist angle deviation occurred with the use of a walker, with dorsiflexion of the right hand greater than that of the left. Males exerted significantly greater vertical force. In the sitting position, greater ulnar deviation was seen among experienced walker users, whereas during standing, experienced users exhibited greater dorsiflexion. The horizontal handles of most marketed walkers may cause user wrist deviations, suggesting researchers should pursue improvements in walker design.     

Reliability of forward head posture evaluation while sitting,standing, walking and running

Forward head posture has been evaluated mostly by visual observation or simple non-invasive measurements without a standardized evaluation method or protocol. In this experimental study, the reliability of existing forward head-posture measurement methods was evaluated by computing the intra-class correlation coefficients of three different head-position variables (two horizontal gap variables and one head-orientation variable) in seven different posture conditions from 20 asymptomatic participants. The position variables of the head were measured three times using a three-dimensional motion capture system while sitting comfortably, sitting with the back straight, standing comfortably, standing with the back straight, walking at 4 and 6 km/h on a treadmill, and running at 8 km/h on a treadmill. Intra-class correlation coefficients between repetitive measures ranged from 0.81 to 0.96, and high correlation coefficient values (>0.9) were produced when the head-position variables were measured during straight sitting, straight standing, and walking at 6 km/h. Among the three head-position variables, a horizontal gap between the tragus and the 7th cervical vertebra was recorded more consistently than other variables. Results of this study highlight the importance of a standardized evaluation protocol for more reliable assessment of the forward head posture.     

Center-of-pressure regularity as a marker for attentional investment in postural control: A comparison between sitting and standing postures

Postural control is a highly automatized basic activity that requires limited attentional investments. These investments have been shown to increase from balancing experts to controls, and from controls to persons with impaired postural control. Such between-subject comparisons led to a proposed direct relation between the regularity of center-of-pressure (COP) fluctuations and the amount of attention invested in posture. This study aims to expand this relation to a within-subject comparison of conditions that differ in balance demands. Specifically, more regular COP fluctuations were expected for standing than sitting, as stimulus-response reaction-time studies showed that the required attentional demands are lower for sitting than standing. COP registrations were made for fifteen healthy young adults in seated and standing postures. COP regularity was quantified with sample entropy. As expected, COP fluctuations were found to be more regular for standing than sitting, as evidenced by significantly lower sample entropy values. These findings expand the relation between COP regularity and the amount of attention invested in posture to postural tasks that vary in balance demands. An assessment of COP regularity may thus not only be instrumental in the examination of attentional investment in posture in between-subject designs, but also for different postures in within-subjects designs.     

Spatial cognition and motor development: a study of children with spina bifida

The purpose of this study was to examine the relation between motor development and spatial cognition. The sample was 20 children with Spina bifida (M age: 11.4 yr., SD = 1.7) and 20 healthy children as controls (M age: 11.8, SD = 1.8 yr.). An experimental assessment of motor development in spatial cognition in a simulated virtual maze by school-age children is lacking. In this study children with Spina bifida, who were impaired in walking since birth, completed four visuospatial tasks in a small-scale space (Mental Rotation, Water-Level Task, Embedded Figures Test, Visual Short-term Memory Test), and a spatial behaviour and knowledge task in a virtual maze. These children showed poorer performance than children in the control group on most measures. The results are discussed with respect to theoretical implications and further research.     

Lateral foot-movement times in sitting and standing postures

This study examined the effects of foot-side, sex, movement amplitude, and target width on lateral and nonvisually controlled foot-movement time with a reciprocal foot-tapping task in sitting and standing postures. 9 male and 9 female right-foot dominant undergraduates (ages 20 to 25 years) with no reported physical and health problems with their lower limbs voluntarily participated. Analysis indicated foot-movement time in a standing posture was much faster than that in a sitting posture. Target width and movement amplitude had significant effects on foot-movement time, while the effects of foot-side and sex were not significant. Multiple regression models with inclusion of the significant factors were examined which should be useful in predicting foot-movement time required for different tasks in sitting and standing postures. Possible applications of the results may be made to the design of work and foot controls in terms of the related task factors for person-machine interfaces with two or more pedals.     

Reducing stereotypic behavior through discrimination training,differential reinforcement of other behavior,and self‐monitoring

The effect of a treatment package designed to reduce stereotypic body rocking was examined in a child diagnosed with autism. After baseline, the participant was taught to discriminate between inappropriate (e.g. sitting in a chair and rocking) and appropriate (e.g. sitting in a chair without rocking) behavior. During intervention, both a therapist and the participant himself monitored the occurrence of rocking behavior. A non‐resetting 5 min differential reinforcement of other behavior (DRO) schedule was also introduced. A multiple baseline across behaviors (sitting and standing) design was used to evaluate the effects of the intervention package. The results indicated that the intervention was effective in eliminating body rocking. In addition, the DRO schedule was successfully increased to 20 min for sitting and 17 min for standing and the treatment was successfully introduced at the child's school. Copyright © 2001 John Wiley & Sons, Ltd.     

Mom, Let Me Play More Computer Games: They Improve My Mental Rotation Skills

This study investigated how 3-D and 2-D computer game practice and delivery as well as individual differences affect performance on two tests of mental rotation (Vandenberg Mental Rotation Test and Card Rotation Test). Sixty-one US undergraduates from the Midwest completed 4 h of either massed or distributed practice. While computer game practice improved mental rotation scores in general, women’s gains were significantly greater than men’s, and the most significant gains were accomplished when practice was massed. High mathematical ability, gender, and type of practice significantly predicted improvement scores. The findings suggest that even very minimal computer game practice may improve performance on mental rotation tasks.     

Predictive Validity of the MMPI–2 Restructured Clinical (RC) Scales in a Batterers' Intervention Program

Summary: The test-retest reliability of the Hutt Adaptation of the Bender-Gestalt Test was explored with a population of 40 process schizophrenics over a two-week interval. The total Psychopathology Scale Score was found to have high retest reliability for both male and female patients (rho = .87 for males and .83 for females). Moreover the three major components of the Scale were found to have high reliability, and fairly high reliabilities were obtained for patients scoring high as well as low on the Scale. Interjudge reliability was also found to be very high (rho = .895), confirming previous studies in this respect. On these grounds, the Scale offers promise both for clinical and research purposes.     

Validity and Reliability of the TGMD-2 for Brazilian Children

ABSTRACT The Test of Gross Motor Development (TGMD-2) is broadly used in research and clinical settings. The author aimed to translate and investigate the content, criteria, and construct validity and reliability of the TGMD-2 for Brazilian children. The study involved translators, experts, and 3,124 Brazilian children from several states of Brazil. Results confirmed language clarity and pertinence of the TGMD-2. Appropriate indices of the confirmatory factorial validity (root mean square error of approximation = .06; comparative fit index = .88; Tucker-Lewis index = .83; normed fit index = .09; goodness-of-fit index = .98; adjusted goodness-of-fit index = .95), test-retest (values from .83 to .91) and inter- and intrarater reliability were found. Concurrent validity between TGMD-2 and Movement Assessment Battery for Children was weak. The TGMD-2 is a validity and reliability instrument for Brazilian children.     

Rorschach Aggressive Content (AgC) variable: a study of criterion validity

This study adds to the existing literature on the clinical utility of the Aggressive Content (AgC) variable proposed by Gacono and Meloy (1994). Criterion validity is evaluated by examining the relation between AgC and behavior. Rorschach and clinical chart material taken from psychological assessments were examined for 94 patients in Exner's (1993) psychiatric reference groups. An Aggression Chart Rating Scale (ACRS) was created to score the level of aggressiveness of each patient's diagnostic report. Analyses revealed good interrater reliability (intraclass correlation coefficient = .73) for ACRS scores and Aggressive Movement (AG; kappa = .73) and excellent reliability for AgC (kappa =.88) and Morbid Content (MOR: kappa = .79). Pearson's correlation revealed significant relations between AgC and both AG and MOR. All 3 Rorschach variables were significantly related to scores on the ACRS. A stepwise regression analysis utilizing these 3 variables resulted in AgC being the only nonredundant predictor of scores on the ACRS. This suggests that AgC was more strongly related to more aggressive ACRS scores than either AG or MOR. The continued support for the clinical utility of AgC as well as recommendations for the addition of the AgC variable to Exner's (1993) Comprehensive System's list of Special Scores are discussed.     

A test of the ability to identify emotion in human standing and sitting postures: the diagnostic analysis of nonverbal accuracy-2 posture test (DANVA2-POS)

The purpose of the present study was to introduce the Diagnostic Analysis of Nonverbal Accuracy for Postures (DANVA2-POS), a test that measures an individual's ability to identify emotion in human standing and sitting postures. The authors describe the construction and selection of the test items. Types of standing and sitting postures were generated from a set of dimensions gleaned from a review of relevant theoretical and empirical literature. Two men and 2 women portraying standing and sitting postures were photographed. An empirical norming procedure was used to select 32 high- and low-intensity standing and sitting postures representing happiness, sadness, anger, and fear. Three hypotheses guided the collection of construct validity evidence. Consistent with the hypotheses, data from 243 participants showed that DANVA2-POS scores increased in accuracy with age, were internally consistent and reliable over time, and were related to self-reported loneliness, fear of negative evaluation, and locus of control. The authors report construct validity evidence from 6 additional studies. Future applications of the DANVA2-POS test are described.     

The assessment of the social cognition and object relations scale on TAT and interview data

This study examines the reliability and convergent validity of 2 versions of the Social Cognition and Object Relations Scale (SCORS), one for use with Thematic Apperception Test narratives (SCORS-TAT; Westen, 1990) and one for use with clinical interview data (SCORS-CDI; Westen, Barends, Leigh, Mendel, & Silbert, 1990 ). Four SCORS dimensions were evaluated. Data were collected in a psychiatric sample (N = 74). Results show that although interrater reliability was good for all dimensions, internal consistency was low, especially for the affective dimensions. Structural equation modeling, in which a model with 2 factors (i.e., SCORS-TAT and SCORS-CDI) and 4 dimensions each was tested, indicated low convergence between corresponding dimensions of SCORS-TAT and SCORS-CDI. Correlational analyses suggested that this was due to a strong method factor. Regression analyses, however, revealed that the presence of a personality disorder operated as a moderator for convergence between corresponding cognitive-structural dimensions.     

Psychometric properties of the Hooper Visual Organization Test

The psychometric properties of the Hooper Vsual Organization Test (VOT) have not been well investigated Here the authors present internal consistency and interrater reliability coefficients, and an item analysis, using data from a sample (N = 281) of "cognitively impaired" and "cognitively intact" patients, and patients with undetermined cognitive status. Coefficient alpha for the VOT total sample was .882. An item analysis found that 26 of the 30 items were good at discriminating among patients. Also, the interrater reliabilities for three raters (.992), two raters (.988), and one rater (.977) were excellent. Therefore, the judgmental scoring of the VOT does not interfere significantly with its clinical utility. The authors conclude that the VOT is a psychometrically sound test.     

Sex Differences in Relationships between Verbal Fluency and Personality

The Thurstone Verbal Fluency Test, Vandenberg Mental Rotation Test, and NEO-FFI personality test were administered to 182 university participants (126 female, 56 male). The men scored higher than the women on the spatial test, and the women scored higher than the men for the verbal fluency test, as reported by others. Women reported more extraversion and agreeableness than men. Extraversion was correlated with verbal fluency for both sexes. For the men, verbal fluency was also positively associated with agreeableness, and for the women, verbal fluency was associated with openness and conscientiousness. No relationships between personality and spatial ability were found. Thus, the relationships between cognitive variables and personality factors differed between the sexes. These findings are discussed in terms of the common frontal neural substrate of verbal fluency and these aspects of personality, as well as the inherently social nature of language as a communication tool.     

Assessing Concrete and Abstract Thinking With the Draw-a-Person Technique

In this study, we examined the Draw-a-Person (DAP) technique as an indicator of concrete/literal and abstract thinking, Subjects (N = 50) included schizophrenic inpatients (n = 25) and college students (n = 25). Fourteen possible indicators of concrete/literal or abstract thinking on the DAP were generated based on theoretical considerations and prior research. Five indicators were eliminated because of their low interrater reliability. The Proverbs Test (Gotham, 1956) was used to establish evidence of concrete/literal and abstract thinking. Scores from the DAP and the Proverbs Test were correlated. Composite scores on the DAP were highly correlated (r = .52, p < .01) with the corresponding Proverbs Test score. In addition, abstract scores on the DAP were correlated (r = .54, p < .01) with a similar Proverbs Test score.. Concrete/literal DAP scores did not correlate significantly (r = .20, p > .05) with concrete/literal Proverb Test scores. Results indicate the potential for using the DAP technique to assess concrete/literal and abstract thinking when a nonverbal test is needed.     

Assessing concrete and abstract thinking with the Draw-a-Person technique

In this study, we examined the Draw-a-Person (DAP) technique as an indicator of concrete/literal and abstract thinking, Subjects (N = 50) included schizophrenic inpatients (n = 25) and college students (n = 25). Fourteen possible indicators of concrete/literal or abstract thinking on the DAP were generated based on theoretical considerations and prior research. Five indicators were eliminated because of their low interrater reliability. The Proverbs Test (Gotham, 1956) was used to establish evidence of concrete/literal and abstract thinking. Scores from the DAP and the Proverbs Test were correlated. Composite scores on the DAP were highly correlated (r = .52, p < .01) with the corresponding Proverbs Test score. In addition, abstract scores on the DAP were correlated (r = .54, p < .01) with a similar Proverbs Test score.. Concrete/literal DAP scores did not correlate significantly (r = .20, p > .05) with concrete/literal Proverb Test scores. Results indicate the potential for using the DAP technique to assess concrete/literal and abstract thinking when a nonverbal test is needed.     

Electromyographic and vasomotor activity in tension, migraine, and combined headache patients: The influence of postural variation

Electromyographic (EMG) and temporal artery vasomotor activity was evaluated in three groups of headache patients (tension, migraine and combined) and nonheadache control subjects while in reclining, sitting and standing positions. Analysis of the EMG data revealed that at all measurement sites (bilateral frontalis, bilateral trapezius) the three headache groups demonstrated significantly higher levels than the nonheadache group but did not differ from each other. A secondary analysis of the trapezius EMG data revealed that a large percentage of headache patients had “normal” EMG levels in the reclining position but showed abnormalities in the sitting and standing positions. Analysis of the left temporal artery vasomotor activity revealed that all three headache groups vasoconstricted to a significantly greater extent than the nonheadache group in the sitting and standing positions. However, a diagnosis by position interaction was found for the right temporal artery with the migraine group demonstrating a unique pattern of activity.     

Postural stability and hand preference as constraints on one-handed catching performance in children

Effects of postural state and hand preference as constraints on 1-handed catching performance were investigated in different ability groups of children aged 9-10 years. On the basis of pretest data, the authors classified 48 participants into groups of good, intermediate, and poor catchers (n = 16 in each) and asked them to perform 1-handed catches with their preferred and nonpreferred hands while standing and sitting. The good catchers' performance was not affected by the imposed postural constraints but did improve when they used the preferred hand. A similar effect of hand preference was evident in the intermediate and poor catchers, but there was also an effect of postural constraint. Independent of hand preference, intermediate catchers' performance while seated improved significantly compared with that during standing. For poor catchers, there was an interaction between hand preference and posture; significant improvement was evident only when they used the preferred hand in the sitting condition. The finding that manipulation of posture and hand preference affected performance outcomes indicates that perceptual skill is not the only influence on catching performance in children. Manipulation of those key constraints may facilitate the acquisition of catching skill, but more research is needed to determine the permanence of those effects.