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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

A Study of the Relationship Between the Responses Given by Paretics and Mixed Schizophrenics on the Bender-Gestalt Visual Motor Test

Blackwell, Dale W. 08 1900 (has links)
The purpose of this study is to present quantitative findings of the Bender-Gestalt Visual Motor Test which will indicate the effectiveness of this media as an instrument of differential diagnosis when applied to General Paresis and Mixed Schizophrenia.
22

An Analysis of the Relationship between Performance on the Revised Bender Visual-motor Gestalt Test and Scores on the Wechsler Intelligence Scale for Children

Porter, John William 08 1900 (has links)
The primary problem of this study was to determine the relationship between BGT performance, as indexed by the Developmental Scoring System of Koppitz, and performance on the Wechsler Intelligence Scale for Children.
23

The Bender Gestalt Test and Prediction of Behavioral Problems in Moderately Mentally Retarded Children

Baxter, Raymond D. 05 1900 (has links)
The purpose of this study was to determine the usefulness of Koppitz's method of scoring the Bender Gestalt (BG) Test for the prediction of behavioral problems in retarded children. The problem behaviors with which this study was concerned were those most often associated with the hyperactive child.
24

Development of a seismic tomography system for use on a geotechnical centrifuge

Rammah, Khader January 1900 (has links)
[Truncated abstract] Seismic tomography has been extensively used in geophysics for different purposes such as geological mapping and prospecting for oil and gas. In geophysics, ultrasound or electromagnetic waves are normally used to provide the tomographic information. In the geotechnical area, seismic tomography is emerging as a promising technique that can be used to determine the spatial variability of shear wave velocities and hence the small strain stiffness of geomaterials. Although some studies have been undertaken to incorporate seismic measurement into centrifuge modelling, there has been to date no attempt to build a complete seismic tomography facility with high resolution for use in a geotechnical centrifuge. Such a powerful facility can help in better understanding of soil behaviour by providing a complete picture of the spatial variation of the soil property of concern. The main aim of this study was to develop a high-resolution seismic tomography (ST) system for the beam centrifuge at the University of Western Australia (UWA) by which the shear wave velocity and hence maximum shear modulus could be determined anywhere in the centrifuge model. ... This limitation was the requirement to use an a priori model. The exact solutions in the different examples presented in this chapter were known, and they were used as a priori models into the inversion process. However, in practice the exact solution is unknown, and the aim of the tomographic inversion is to obtain a solution that best describes the measured data. Carrying out inversion without using an a priori model can yield an output model that hints at the nature of the model. This output can then be used as the starting point in an iterative process, in which the output from one step is used as an a priori model for reinverting the original data in a subsequent step. In this case, this process slightly improved the output tomogram and decreased the value of root mean squares of travel time residuals (Rrms). An alternative inversion strategy was proposed based on the results obtained in this study. It involves using a searching algorithm. A searching process can be carried out based on the output from the first iteration (without using an a priori model). The search can involve varying the parameters that describe buried anomalies, such as the size of the anomaly, the velocity value in the anomaly, and the location of the anomaly. The aim is to search for the combination of anomaly parameters that minimises the resulting error parameters (mainly Rrmx, but also the average error and the standard deviation of the error). For more subtle cases, such as the velocity model under a footing, where inversion without using an a priori model did not recover the input model, a searching algorithm involving applying perturbations to the exact Boussinesq model can be performed. Not only can the searching procedure involve adding perturbation to the velocity values in the Boussinesq model, but it can also add perturbation to the shape of the velocity distribution below the footing. The searching process can continue until a model that fits the data with a minimum error is found, i.e., minimising Rrms.
25

The relationship between the Wechsler preschool and primary scale of intelligence and the Bender gestalt with preschool children

Schmidt, Mary Kathryn Schwinden January 1979 (has links)
The purpose of this study was to investigate the relationship between the Bender Gestalt (BG) and the Wechsler Preschool and Primary Scale of Intelligence (WPPSI) with a group of preschool children. A second aim of this study was to explore the value of the BG as an intellectual screening instrument to be used in place of the time consuming WPPSI. This study consisted of 48 Ss (24 males and 24 females) who were attending nursery school classes and day care centers during the winter of 1978-79 in Muncie, Indiana. Age range at the time of testing was 5 years 0 months to 6 years 6 months with a mean age of 5 years 5 months. Tests were administered individually by a white male or female clinical psychology graduate student. Each examiner was randomly assigned a group of Ss consisting of 12 males and 12 females. The order of test administration was counterbalanced. Pearson product-moment (r) correlations obtained between the WPPSI Full, Verbal, and Performance Scales were r = -.65, r = -.52, and r = -.67, respectively (p<.001). Since more of the common variance was associated with the BG and the WPPSI Full (42%) and Performance Scales (45%) than with the Verbal Scale (27%), the BG may be used with caution in place of the WPPSI Full or Performance Scales with preschool children.
26

A correlational study of the Trail-making test and the Bender-gestalt test

Fazlian, Farideh January 1979 (has links)
A study was conducted, comparing the relationship between the Bender-Gestalt Test and the Trail-Making Test in brain-damaged patients. The study revealed a moderate negative correlation between the scaled score of the Trail-Making Test and the psychopathology scale of the Hutt Adaptation of the Bender-Gestalt Test. This relationship indicates that a number of skills might be tapped by both of these tests in brain-damaged patients. A further analysis showed that the correlation between the Trail-Making Test A and three factors of the Bender-Gestalt Test, Use of Space I, Collision, and Elaboration, were found to be significant (.05). In addition, the Trail-Making Test B is significantly correlated with the following factors of the Bender-Gestalt Tests Sequence, Use of Space I, Collision, Perceptual Rotation, and Retrogression (.05).This investigation discussed a number of skills and abilities which might be important on the performance of these tests in brain damaged patients, namely: anticipatory planning, visual organization, and shifting. Furthermore, overt anxiety has been considered one of the factors which might affect the performance of the brain-damaged patients on both tests.
27

Utility of the Bender Gestalt-second edition in the assessment of attention-deficit/hyperactivity disorder

Allen, Ryan A. January 2004 (has links)
The purpose of the study was to examine the use of the Bender Gestalt Test Second Edition (BGT-II) with children diagnosed with Attention-Deficit/Hyperactivity Disorder (ADHD). Previous research has examined the relationship of ADHD and visual-motor functioning based on overall developmental scores or specific "emotional indicators." Although several of these studies have examined the relationship of the previous edition of the BGT and ADHD symptoms, methodological problems, a lack of a clear theoretical rationale, and psychometric problems associated with the original edition, limit the validity and generalizability of these results.This study sought to examine the utility of the revised edition of the BGT, the BGT-II, in the assessment of behaviors associated with ADHD. Based upon a broad theory of ADHD (Barkley, 1997b), several hypotheses were made regarding how areas of deficit (e.g., self-regulation, planning, working memory, motor control) were expected to he manifested in BGT-I1 performance. An ADHD group (N = 67) was compared to a control group of normal subjects (N = 100) and a group of subjects diagnosed with mental retardation (N = 59). Additionally, the performances of children diagnosed with subtypes of ADHD were compared in an attempt to clarify the nature of the disorder.The results of the study do not support the use of the BGT-11 in the assessment of ADHD. Although those with ADHD tended to perform more poorly than controls on the BGT-II, these differences disappeared when intellectual level was controlled. Traditional emotional indicators purporting to reflect impulsivity and attention problems also failed to demonstrate their efficacy. With the exception of the indicator Confused Order, they were no more indicative of individuals diagnosed with ADHD than those with no knowndisabilities. The proposed ADHD-related indicators also failed to demonstrate the ability to differentiate between the ADHD group and controls. / Department of Educational Psychology
28

Normative indicators for grade 3 and grade 7 isiXhosa-speaking children on the Bender Visual-Motor Gestalt Test (Second Edition)

Palmer, Hanli January 2016 (has links)
Selecting appropriate normative data for the purpose of evaluating psychometric test scores forms an integral part of the interpretative psychological assessment process. This highlights the well-known problem of utilising measures developed in the United Kingdom (UK), or the United States (US) and accepting their norms unreservedly for the practice on local populations, which questions the tests’ validity and reliability. The current study, which aimed to collect normative indicators on the Bender Gestalt Test (Second Edition), forms part of the continuing effort to develop norms for psychological tests in South Africa, and to focus on the valid and reliable use of measures within the context of South Africa’s multicultural and multilingual population groups. The participants of the research were Black isiXhosa-speaking Grade 3 and Grade 7 learners aged 8 to 9 years (N = 38 ), and 12 to 13 years (N = 23), obtaining their school education in the disadvantaged educational setting of the former Department of Education and Training (ex-DET) schools. The tests were scored according to the Bender Gestalt Test (Second Edition) manual, using the Global Scoring System. Thereafter, the raw scores were converted to Standard Scores, T-scores and Percentile Ranks using the US normative tables, according to chronological age categories. When the two groups were compared to the US norms, the results equated favourably for the present study sample. There were no significant findings in relation to the classroom size or any difference in performance between the schools who participated. The only significant difference revealed between male and female participants was with the Grade 7 sample group, where the males scored significantly lower than females on the Recall phase. These results support the prospect of the continuous revision of norms, and it is suggesting that the cognitive processes measured by this test are likely to derive from robust neurological substrates that are relatively stable across cultural groups.
29

Medición de parámetros dinámicos de arena con finos mediante columna resonante

Araya Contreras, Sofía Esperanza January 2017 (has links)
Ingeniera Civil / Chile es uno de los países más sísmicos del mundo; escenario de grandes terremotos en el pasado y con toda seguridad, en el futuro. En particular, los suelos son afectados por movimientos sísmicos. Por lo que es importante conocer las propiedades dinámicas del suelo (rigidez máxima Gmax , curvas de degradación G/Gmax y el amortiguamiento D ) para el correcto diseño de proyectos de ingeniería. Existen distintos ensayos para medir parámetros dinámicos del suelo, sometiéndolos a pequeñas y grandes deformaciones. El módulo de corte G y el amortiguamiento D se obtienen con ensayos de laboratorio y terreno. En particular, en laboratorio, uno de los ensayos que cubre un mayor rango de deformación es el de columna resonante (D4015-15, 2016). Este trabajo de título consistió en realizar ensayos de columna resonante en arenas de relave del muro del tranque El Torito (Mina de cobre El Soldado). Los ensayos fueron hechos con probetas de arena preparadas entre 35% y 85% de densidad relativa, y confinamientos que variaron entre 1 [kg/cm2] y 4 [kg/cm2]. Los resultados obtenidos se compararon con los obtenidos en el equipo Bender Element. Los Gmax dieron entre 40 y 180 [MPa]. Los ensayos de columna resonante entregaron rigideces máximas moderadamente mayores (5%) a los de Bender Element. Esto debido posiblemente a que las probetas del primer ensayo se vieron menos alteradas en su confección. Todas las curvas de degradación del módulo de corte G/Gmax y amortiguamiento D varían respecto a su deformación al corte con una tendencia que concuerda con lo observado en la literatura. A mayor confinamiento, las muestras tienen mayor rigidez inicial, mayor G/Gmax y menor amortiguamiento. A mayor índice de vacíos, las probetas tienen menor rigidez inicial y mayor G/Gmax , el amortiguamiento no tiene mayor variación respecto este parámetro. El comportamiento de las muestras al 5% de saturación es similar al de las muestras saturadas.
30

The Bender Gestalt Test: an investigation into problems concerning administration and scoring and its application to low-educated adults

Dyall, Kate January 1996 (has links)
The study investigates .the use of the Bender Gestalt Test (BGT) amongst low-educated adults. Three versions of the BGT are used in this study; the original 'copy' version as well as the 'immediate' and 'delayed'recall versions. This is done so as to expand the ability of the BGT to identify neurological impairment and to differentiate between this and functional impairment. A literature review explores the problems of standardization in the administration, scoring and application of all three versions of the test Suggestions are made to correct the problems identified and a novel system of scoring the recall versions are proposed, which allows for the comparison of results of the three versions of the test and which is based on Lacks's (1984) and Weiss's (1970) systems. Administration procedures were also developed to suit the context of the study. The copy, immediate and delayed versions of the BGT were administered to a group of 184 low-educated adults. Statistical analyses revealed significant education effects for the sample tested with regards to both test scores and performance time. The finding of an education effect for performance time is discussed at length, as some literature regards excessive time as a neurological indicator. An anomaly for the group with no education was found to exist, with the scores of these subjects not Significantly different from those with 4-6 years of education. Possible reasons for this were explored. In addition, the findings of this research revealed a plateau effect with those having less than 6 years of education scoring substantially lower than those with 7 years and more. The scores of adults with 7 and more years of education level out with no significant differences between educational levels. This appears to suggest that education effects rather than the developmental maturity level proposed by Koppitz, are involved. In addition, the scores of low-educated adults on the expanded Bender Gestalt Test were significantly lower than those of children with similar educational levels, in other studies. These findings and possible explanations are discussed. The study concludes by suggesting new research areas and emphasizing the urgent need for separate normative data on the expanded BGT for low-educated adults, and the establishment of appropriate 'cut-off' points.

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