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 Department: Department of Technology and Cognition
An Investigation of Factors Affecting Test Equating in Latent Trait Theory

An Investigation of Factors Affecting Test Equating in Latent Trait Theory

Date: August 1998
Creator: Suanthong, Surintorn
Description: The study investigated five factors which can affect the equating of scores from two tests onto a common score scale. The five factors studied were: (a) distribution type (i.e., normal versus uniform); (b) standard deviation of itemdifficulties (i.e., .68, .95, .99); (c) test length or number of test items (i.e., 50,100, 200); (d) number of common items (i.e., 10,20,30); and (e) sample size (i.e., 100, 300, 500). The significant two-way interaction effects were for common item length and test length, standard deviation of item difficulties and distribution type, and standard deviation of item difficulties and sample size.
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Measurement Disturbance Effects on Rasch Fit Statistics and the Logit Residual Index

Measurement Disturbance Effects on Rasch Fit Statistics and the Logit Residual Index

Date: August 1997
Creator: Mount, Robert E. (Robert Earl)
Description: The effects of random guessing as a measurement disturbance on Rasch fit statistics (unweighted total, weighted total, and unweighted ability between) and the Logit Residual Index (LRI) were examined through simulated data sets of varying sample sizes, test lengths, and distribution types. Three test lengths (25, 50, and 100), three sample sizes (25, 50, and 100), two item difficulty distributions (normal and uniform), and three levels of guessing (no guessing (0%), 25%, and 50%) were used in the simulations, resulting in 54 experimental conditions. The mean logit person ability for each experiment was +1. Each experimental condition was simulated once in an effort to approximate what could happen on the single administration of a four option per item multiple choice test to a group of relatively high ability persons. Previous research has shown that varying item and person parameters have no effect on Rasch fit statistics. Consequently, these parameters were used in the present study to establish realistic test conditions, but were not interpreted as effect factors in determining the results of this study.
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A Longitudinal Study of Graduation, Retention, and School Dropout for Students in Regular and Special Education

A Longitudinal Study of Graduation, Retention, and School Dropout for Students in Regular and Special Education

Date: May 1998
Creator: Smith, Karen S., 1948-
Description: This study examined differences in retention, graduation, and dropout between students in grades 9-12 in special education and regular education in the state of Texas for school years 1992-93 through 1995-96. The purpose was to gather information regarding the possible adverse effects of increased academic standards and mandatory testing on students with disabilities. The results indicate that when compared to students in regular education, students with disabilities are significantly more likely to be retained and are not experiencing the same decline in dropout rates as regular students. There is no indication that students with disabilities have been adversely affected by school reform but the size of the school district may play a significant role in whether or not students with disabilities dropout of school.
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Factors Affecting Discrete-Time Survival Analysis Parameter Estimation and Model Fit Statistics

Factors Affecting Discrete-Time Survival Analysis Parameter Estimation and Model Fit Statistics

Date: May 1998
Creator: Denson, Kathleen
Description: Discrete-time survival analysis as an educational research technique has focused on analysing and interpretating parameter estimates. The purpose of this study was to examine the effects of certain data characteristics on the hazard estimates and goodness of fit statistics. Fifty-four simulated data sets were crossed with four conditions in a 2 (time period) by 3 (distribution of Y = 1) by 3 (distribution of Y = 0) by 3 (sample size) design.
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A comparison of traditional and IRT factor analysis.

A comparison of traditional and IRT factor analysis.

Date: December 2004
Creator: Kay, Cheryl Ann
Description: This study investigated the item parameter recovery of two methods of factor analysis. The methods researched were a traditional factor analysis of tetrachoric correlation coefficients and an IRT approach to factor analysis which utilizes marginal maximum likelihood estimation using an EM algorithm (MMLE-EM). Dichotomous item response data was generated under the 2-parameter normal ogive model (2PNOM) using PARDSIM software. Examinee abilities were sampled from both the standard normal and uniform distributions. True item discrimination, a, was normal with a mean of .75 and a standard deviation of .10. True b, item difficulty, was specified as uniform [-2, 2]. The two distributions of abilities were completely crossed with three test lengths (n= 30, 60, and 100) and three sample sizes (N = 50, 500, and 1000). Each of the 18 conditions was replicated 5 times, resulting in 90 datasets. PRELIS software was used to conduct a traditional factor analysis on the tetrachoric correlations. The IRT approach to factor analysis was conducted using BILOG 3 software. Parameter recovery was evaluated in terms of root mean square error, average signed bias, and Pearson correlations between estimated and true item parameters. ANOVAs were conducted to identify systematic differences in error indices. Based on many ...
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Enhanced learning performance in the middle school classroom through increased student motivation, by the use of educational software and question-based gaming technology.

Enhanced learning performance in the middle school classroom through increased student motivation, by the use of educational software and question-based gaming technology.

Date: December 2006
Creator: Dorr, David L.
Description: The purpose of this research was to determine if the introduction of a competitive and collaborative computer-based gaming software system into middle school classrooms would result in improved attendance and grades, and motivate students to have a greater interest in their studies. This study was conducted over a 6 week period, with attendance and performance data being collected from 284 students. Two quantitative surveys were used to measure course interest and motivation: (a) the Course Interest Survey (CIS), and (b) the Instructional Materials Motivation Survey (IMMS). Participation in these surveys consisted of 84 students taking the CIS and 40 students taking the IMMS. The results indicated that the experimental group showed statistically better scores than the comparison group in attendance and performance. Students participating in the experimental group had significantly lower mean ranks of absenteeism compared to students in the comparison group. Results also revealed significant differences on grades. Students that were in the experimental group had significantly higher grades compared to students that were in the comparison group. Results of the CIS suggest that a statistically significant difference does not exist on Attention, Relevance, Confidence, and Satisfaction between the experimental and comparison groups. Results of the means and standard ...
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A qualitative analysis of the negative symptoms of schizophrenia interfering with academic and social success, and the exacerbators and diminishers of those symptoms.

A qualitative analysis of the negative symptoms of schizophrenia interfering with academic and social success, and the exacerbators and diminishers of those symptoms.

Date: December 2003
Creator: Flint, Paula J.
Description: The Individuals with Disabilities Education Act (IDEA) mandates that public schools provide appropriate school programs and transition services for students with emotional and behavioral disorders (E/BD), and the law specifically names schizophrenia as a disability for which services are to be provided. To date, little, if any, research has been conducted on schizophrenia in the field of special education. New antipsychotic medications for schizophrenia are controlling the positive symptoms of hallucinations, illusions, and the severest of delusions, thus enabling these students to remain in school. However, many interfering negative symptoms remain (e.g., loss of goals, loss of former interests, cognitive regression). The purpose of this qualitative research study was to identify the negative symptoms of schizophrenia that interfere with a student's academic and social success, primarily within a school setting, but also as they affect functioning within the family and the student's transition into the community. In addition, specific factors that act as exacerbators or diminishers of these symptoms were identified through this study. Research participants included 5 students who developed schizophrenia from the ages of 12 to 22, their parents, and their teachers. They were interviewed using a semi-structured approach resulting in over 30 hours of taped interview data. ...
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The impact of technical barriers on the effectiveness of professional development as related to a distance education system-based course: A case study in the Web World Wonders environmental science learning community.

The impact of technical barriers on the effectiveness of professional development as related to a distance education system-based course: A case study in the Web World Wonders environmental science learning community.

Date: December 2003
Creator: Dawson, John L.
Description: This study reports and discusses the impact of technical barriers on the effectiveness of professional development as related to a distance education system based course: a case study of the web world wonders environmental science learning community in Florida. The project involved 4th through 12th grade public school teachers learning how to use GPS readers, digital cameras, and Arc View software for the purpose of utilizing a Website that enabled remote Internet camera access in Florida State Parks. Under the supervision of Florida State University and the Florida Department of Education those teachers received professional development in techniques for developing lesson plans utilizing the equipment and software as stated above. Using the Concept Based Adoption Model, a description of the teacher's demographics, Levels of Use and Stages of Concern with relation to gender, age, teaching experience, and technological experience was examined. Technical barriers were identified and an explanation of how they were overcome in the process of receiving the professional development is reported.
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An analysis of the characteristics of female juvenile offenders as predictors of resocialization or recidivism.

An analysis of the characteristics of female juvenile offenders as predictors of resocialization or recidivism.

Date: May 2007
Creator: Aiello, Jan Elizabeth
Description: Because there has been a paucity of research on the educational needs of females with academic, behavioral, and emotional problems involved with the juvenile justice system, this study has been an attempt to classify and compare specific characteristics of this population. In particular, it examined their demographics, disability prevalence rates, along with academic, behavioral, and emotional functioning levels, in order to further understand their relationship to the resocialization or recidivism of the different groups of female juveniles incarcerated in the state of Texas, and contribute to the research for further developing successful prevention and intervention programs. Various demographic factors of the female juveniles in this study were examined: (a) offender type, (b) county of commitment, (c) race/ethnicity, (d) age at first referral, and (e) English language proficiency. Prevalence rates of special education disabilities were determined. Academic functioning was measured by (a) IQ; (b) last school grade completed; (c) Test of Adult Basic Education (TABE) reading gain score; and (d) TABE math gain score. Behavioral functioning was indicated through (a) offense history, (b) documented behavior incidents, and (c) total risk score. Emotional functioning included DSM-IV diagnoses and treatment needs. Due to the design of the research being a descriptive exploration, the ...
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An inquiry into the factors influencing the development of the field of Behavior Disorders: A qualitative approach

An inquiry into the factors influencing the development of the field of Behavior Disorders: A qualitative approach

Access: Use of this item is restricted to the UNT Community.
Date: August 2000
Creator: Menendez, Anthony L.
Description: This dissertation has explored the origins of the field of Behavioral Disorders via a qualitative approach. In order to collect data, interviews were conducted with respondents who were selected via purposeful sampling. All respondents have had a significant impact on the field of special education as evidenced by scholarship and leadership throughout their careers. Data analysis of the interview transcriptions was accomplished through the utilization of computer software. The data indicated six areas/topics that were seen among respondents as being significant to the development of the field of Behavioral Disorders.
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