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Development of a Real-time Pcr Assay for the Detection of Campylobacter Jejuni and Campylobacter Coli.

Description: Campylobacter organisms are the most commonly reported bacterial causes of foodborne infection in the world, with Campylobacter jejuni and Campylobacter coli responsible for over 99% of reported infections. Traditionally, Campylobacter species detection is an arduous process, requiring a special incubation environment as well as specific growth media for an extended growth period. The development of a rapid and reliable diagnostic tool for the detection of Campylobacter species would be a valuable aid to the medical diagnostic decision process, especially to rule out Campylobacter infection during the enteric pre-surgical time period. Improved patient outcomes would result if this rapid assay could reduce the number of enteric surgeries. Assays performed during this dissertation project have demonstrated that both SYBR® green and hydrolysis probe assays targeting an 84 nucleotide portion of cadF, a fibronectin-binding gene of Campylobacter jejuni and Campylobacter coli, were able to detect from 101 to 108 copies of organism from stool specimens, did not detect nonspecific targets, and exhibited a coefficient of variation (CV) of 1.1% or less. Analytical validation of sensitivity, specificity and precision, successfully performed in these studies, warrants additional clinical validation of these assays.
Date: May 2009
Creator: Lewis, Sally
Partner: UNT Libraries

The Relationship Between TeacherInsight ™ Scores and Professional Development and Appraisal System Domain Scores

Description: Many school districts and alternative certification programs use standardized interviews such as the TeacherInsight developed by the Gallup Organization. The TeacherInsight is a Web-based interview consisting of multiple choice and Likert-style items that produces a score between 0 and 100. The Gallup Organization claims that it helps hire the best teachers. The study analyzed the relationships between the TeacherInsight scores and the eight Professional Development Appraisal System (PDAS) domain scores for 527 teachers. The TeacherInsight scores produced a statistically significant correlation with only one of the eight PDAS domain scores. However, even that correlation (r = 0.14) was weak. All eight PDAS domain scores were only able to account for an additional 1.9% of the variance of TeacherInsight scores, above and beyond what was explained by the teachers' age, gender, years of experience, and highest degree earned. Another finding was that 47.4% of the teachers hired had TeacherInsight scores below the district recommended cutoff score of 67. The findings do not support the ability of the TeacherInsight to identify more effective teachers, based on Professional Development Appraisal System scores. The findings also cast doubt on the extent of consideration that principals in this district give the TeacherInsight scores during the selection process. Recommendations for future studies are provided.
Date: May 2009
Creator: Novotny, Michael T.
Partner: UNT Libraries

In good communication and in bad: A study of premarital counseling and communication skills in newlywed couples.

Description: This study examined the effects of premarital counseling on newlywed communication. It was predicted that individuals who had participated in premarital counseling would have lower levels of demand/withdrawal communication and higher levels of spousal support. The effects of the format of the counseling were also examined. Individuals who had been married less than two years completed a survey measuring their marital satisfaction, levels of demand/withdraw, and perceived spousal support. Social learning theory was used as a theoretical lens. Results suggested that participating in premarital counseling has no affect on newlywed communication. Newlyweds who had been exposed to a group format during their counseling had higher marital satisfaction than those who had just participated in a one-on-one format with a counselor.
Date: May 2009
Creator: Norvell, Karen
Partner: UNT Libraries

James Rosenquist: Process, Representation, and the Simulacrum

Description: American artist James Rosenquist is best known for his Pop Art paintings, which existing scholarship has studied in regard to its formal features and social and cultural significance. Rosenquist's manner of working, specifically his process, remains understudied. Focusing on three paintings and three corresponding collages, President Elect (1960-61, 1964), Star Thief (1980), and The Stowaway Peers Out at the Speed of Light (2000), this thesis considers features of Rosenquist's studio practice to propose a new interpretation involving the representational status and significance of the artist's collages and paintings that is elucidated by French theorist Jean Baudrillard's concept of the simulacrum. Additionally, the thesis addresses the treatment of Rosenquist's collages and paintings in publications and exhibitions since 1992 by suggesting how Baudrillard's ideas about the simulacrum clarify the museological narrativizing and consumption of the artist's work.
Date: May 2009
Creator: Murphy, Erin Kathleen
Partner: UNT Libraries

FISA and warrantless wire-tapping: Does FISA conform to Fourth Amendment standards?

Description: Electronic surveillance for foreign intelligence purposes was largely unregulated prior to 1978. The Foreign Intelligence Surveillance Act of 1978 (hereinafter "FISA") was enacted to implement a judicial authorization process for foreign intelligence electronic surveillance that would effectively balance competing needs for national security and civil liberty under the Fourth Amendment. This study examines the evolution of FISA and its effectiveness under the Fourth Amendment, as assessed by federal reviewing courts and scholars since the statute's enactment. The study concludes that the FISA electronic surveillance authorization process has been effective in providing a constitutional mechanism to obtain foreign intelligence information.
Date: May 2009
Creator: Meyer, Aric
Partner: UNT Libraries

A New Algorithm for Finding the Minimum Distance between Two Convex Hulls

Description: The problem of computing the minimum distance between two convex hulls has applications to many areas including robotics, computer graphics and path planning. Moreover, determining the minimum distance between two convex hulls plays a significant role in support vector machines (SVM). In this study, a new algorithm for finding the minimum distance between two convex hulls is proposed and investigated. A convergence of the algorithm is proved and applicability of the algorithm to support vector machines is demostrated. The performance of the new algorithm is compared with the performance of one of the most popular algorithms, the sequential minimal optimization (SMO) method. The new algorithm is simple to understand, easy to implement, and can be more efficient than the SMO method for many SVM problems.
Date: May 2009
Creator: Kaown, Dougsoo
Partner: UNT Libraries

Leadership and sustainable change: The relationship between leadership practices of principals and reculturing schools as professional learning communities.

Description: This study examined the relationships between leadership practices of principals and strength of schools as sustainable professional learning communities. Strength of schools as professional learning communities was measured using the Professional Learning Communities Assessment; leadership practices were measured using the Leadership Practices Inventory both Self and Observer protocols. Findings indicated that neither principal's self-perceptions of their leadership practices nor teachers' assessments of their principals' leadership practices were related to strength of schools as professional learning communities. Findings did indicate ten specific leadership behaviors of principals that appear to be more highly related to strength of schools as learning communities. Further analysis which focused on the two strongest learning community schools and the two weakest learning community schools indicated that three specific leadership behaviors within Kouzes and Posner's practices of modeling the way and enabling others to act appear to be the most strongly related to reculturing schools as sustainable professional learning communities. Principals who set a personal example of what they expect of others are most likely to lead schools that function as strong learning communities. Additionally, principals who build consensus around a common set of values are also most likely to lead strong learning communities. Finally, principals who develop cooperative relationship with co-workers are most likely to lead schools that function as strong learning communities.
Date: May 2009
Creator: Hill, Shannon D.
Partner: UNT Libraries

An exploration study of the relationship between effectiveness of filial therapy training groups and group cohesion.

Description: This study examined the relationship of group cohesion among heterogeneous and homogeneous groups on individual treatment outcome of child-parent relationship therapy (CPRT). CPRT is a filial therapy model that targets the parent-child relationship as a means for preventing or improving child and/or family problems. This study included 30 parents or caregivers from 9 groups which met for 10 sessions. Participants qualified for this study if their groups ended with at least 3 group members and 2 leaders, all pretest and posttest data on their child between the ages of 2-11 was completed, and if they attended at least 6 of the 10 sessions. Correlation coefficients, t-tests, and effect sizes were calculated. Results demonstrated no statistically significant differences between pretests and posttests on the Child Behavior Checklist (CBCL) for all 30 participants; however, differences in measured effect (η2) between children identified with borderline and clinical behavior problems and children with normal behavior problems suggest that CPRT is more effective among children who demonstrate significant behavior problems. Perceived and observed group cohesion measurements demonstrated no significant difference at the individual outcome level. This finding suggests that group cohesion may not be related to individual outcome. Although there was no significant relationship between group cohesion and individual outcome for this study, results of the group measurements regarding engagement and group cohesiveness, coupled with previous studies on CPRT effectiveness, suggest that CPRT should be utilized in homogeneous groups.
Date: May 2009
Creator: Reed, Kelly Layne
Partner: UNT Libraries

British Prime Minister Tony Blair's Decision to Go to War in Iraq: An Evaluation of Motivating Factors

Description: Blair sent British troops to join U.S. forces in the invasion of Iraq in 2003 at great political cost to himself. What motivated him to take this step? Sources for this work include: autobiographies and biographies of individuals close to Blair; journal and newspaper articles and monographs on this topic; Prime Minister's speeches and press conferences. Part one is comprised of five chapters including the Introduction; Blair's years at school; Blair's early political career; and From Parliament to Prime Minister. Part two includes four chapters that analyze motivating factors such as, Anglo-American Relations; Blair's personality, faith, and his relationship with Gordon Brown; and finally, Blair's perception of Britain's Manifest Destiny. All of these factors played a role in Blair's decision.
Date: May 2009
Creator: LaCoco, Kimberly
Partner: UNT Libraries

Development of a proposed toddler caregiver training program for South Korea.

Description: Based on the survey results of 150 South Korea toddler caregivers about training needs, I developed a relationship-based approach for a toddler caregiver training program. The training program was modified using suggestions provided by 6 South Korean professors, who were asked to review the program. Survey findings revealed that: (a) All participants (toddler caregivers) perceived that it is necessary for caregivers to attend training. However, most (72.2%) found that it was difficult to attend training programs more than 1 time per year because it was hard to find a substitute teacher (64%). Participants desired to attend training programs on toddler care because of the lack of in-service education (26%), curriculum (24%), and training programs (15.3%); (b) Caregivers who had the third-degree caregiver certification preferred to learn parent education more than child development. However, caregivers who had a higher degree of caregiver certification preferred to learn child development more than parent education; and (c) Caregivers who had more than 5 years of teaching experience preferred to learn about the teacher's role more than caregivers who had fewer than 4 years of teaching experience. Future studies need to evaluate the effect of this relationship-based training program for toddler caregivers in relation to improvement in the quality of child care and interaction between caregivers and toddlers. A large-scale study would increase the generalizability of research findings. A larger sample size from different cities in South Korea and random sampling would generate more reliable findings.
Date: May 2009
Creator: Kim, So-Yeon
Partner: UNT Libraries

Factors affecting African American faculty job satisfaction at a historically black university and a predominantly white institution.

Description: This study sought to discover job satisfaction factors of African American faculty at a historically black university and a predominantly white institution. Data were gathered through the use of semi-structured interviews of 6 faculty members from a historically black university and 5 faculty from a predominantly white institution. Several themes emerged from the study. The most salient was that African American faculty at the historically black university were satisfied by their work with students, satisfied with the flexibility of their schedules, and dissatisfied with their pay, workload, and the lack of recognition that they receive from their institution. African American faculty at the predominantly white institution were satisfied by the impact the programs and courses they developed had upon students, satisfied with their job's freedom and flexibility, and dissatisfied with the ideas of being micromanaged or working with people who are not open and honest. The findings of this study showed that service is an important factor to job satisfaction of African American faculty and that there is a distinction between factors faculty are dissatisfied with but willing to endure and those that would cause them to leave an institution.
Date: May 2009
Creator: Wright, Quentin
Partner: UNT Libraries

Development, Implementation, and Analysis of a Contact Model for an Infectious Disease

Description: With a growing concern of an infectious diseases spreading in a population, epidemiology is becoming more important for the future of public health. In the past epidemiologist used existing data of an outbreak to help them determine how an infectious disease might spread in the future. Now with computational models, they able to analysis data produced by these models to help with prevention and intervention plans. This paper looks at the design, implementation, and analysis of a computational model based on the interactions of the population between individuals. The design of the working contact model looks closely at the SEIR model used as the foundation and the two timelines of a disease. The implementation of the contact model is reviewed while looking closely at data structures. The analysis of the experiments provide evidence this contact model can be used to help epidemiologist study the spread of an infectious disease based on the contact rate of individuals.
Date: May 2009
Creator: Thompson, Brett Morinaga
Partner: UNT Libraries

"According to Their Wills and Pleasures": The Sexual Stereotyping of Mormon Men in American Film and Television

Description: This thesis examines the representation of Mormon men in American film and television, with particular regard for sexual identity and the cultural association of Mormonism with sexuality. The history of Mormonism's unique marital practices and doctrinal approaches to gender and sexuality have developed three common stereotypes for Mormon male characters: the purposeful heterosexual, the monstrous polygamist, and the self-destructive homosexual. Depending upon the sexual stereotype in the narrative, the Mormon Church can function as a proponent for nineteenth-century views of sexuality, a symbol for society's repressed sexuality, or a metaphor for the oppressive effects of performing gender and sexuality according to ideological constraints. These ideas are presented in Mormon films such as Saturday's Warrior (1989) as well as mainstream films such as A Mormon Maid (1917) and Advise and Consent (1962).
Date: May 2009
Creator: Sutton, Travis
Partner: UNT Libraries

Transfer of Mand-to-Tact and Tact-to-Mand Topographies in Two Vocal-Verbal Children with Autism: A Replication and Extension Study

Description: Skinner (1957) suggested that different verbal operants are acquired independently of each other and establishing a verbal operant as a mand will not necessarily result in the appearance of a tact having the same response form and vice versa. Recent empirical research has found that newly acquired mands and tacts can be transferred to different relations without direct training. The present study investigated 1) how verbal responses taught as pure mands affect untrained tact relations; 2) how verbal responses taught as pure tacts affect untrained mand relations; 3) how the size of mand and tact repertoires relate to speed of acquisition of new mands and tacts; and 4) how size of entering repertoires affect the transfer of mand topographies to tacts and vice versa. Two vocal-verbal children with autism were taught three novel responses as mands and three other responses as tacts. Mand topographies transferred to tact relations and tact topographies transferred to mand relations for both participants. Overall acquisition as well as transfer of mands and tacts was faster for the participant with a higher entering repertoire.
Date: May 2009
Creator: Ruiz, Julio
Partner: UNT Libraries

Voices of worth- listening to teachers: A phenomenological study of professional development and instructional change.

Description: The purpose of this phenomenological study was to describe and explain teachers' perceptions about effective professional development as well as to identify the environmental factors that affect the teacher participants' ability to engage in and implement various behaviors and beliefs transferred from the professional development experience. Four teachers were studied in depth for one school year, and data collected included in-depth interviews and classroom observations. Findings indicate three main themes related to the research questions, which sought to understand how teachers perceive and describe their experiences of participating in professional development and the factors that support or constrain their instructional decision-making as it relates to new knowledge and skills acquired through professional development. These themes are that: (a) Effective professional development must have a supportive context and meaningful purpose which: meets the physical and cognitive needs of participants; focuses on improving practice, content knowledge, and pedagogy; provides participants with choice, adequate time and ownership of learning experiences; and includes opportunities for sustained learning and accountability; (b) Learning experiences are greatly affected by interpersonal relationships and opportunities for social learning and should be built upon the principles of: taking risks in the learning environment; sharing beliefs in a community of practice with effective support structures; involving all members, including the leaders, in the community of practice; and including opportunities for dialogue and the sharing of best practices as tools for learning, and (c) Implementation efforts are influenced by multiple sources, including: collegial and administrator support; curriculum and standardized testing; and time. Effective professional development must include attention to assisting teachers in dealing with these influences when they become barriers to implementation efforts.
Date: May 2009
Creator: Roberts, Jennifer A.
Partner: UNT Libraries

Indian tourists' motivation, perception, and satisfaction of Bangkok,Thailand.

Description: The purposes of the study were to: 1) identify Indian tourists' demographics and travel patterns; 2) examine Indian tourists' motivation to take the Bangkok area trip; 3) examine the level of importance of information sources; 4) identify the level of satisfaction of Indian tourists on their travel experience on the Bangkok area attributes; and 5) examine the intention to return and willingness to recommend the Bangkok area and Thailand. The findings showed that Indian tourists were motivated to visit the Bangkok area by both push and pull factors. Family and/or friends and the Internet were considered as important sources in trip decision making. Indian tourists were generally satisfied with the Bangkok area's attributes. They also showed the desire to revisit and recommend Bangkok and Thailand as travel destinations.
Date: May 2009
Creator: Siri, Raktida
Partner: UNT Libraries

Image manipulation and user-supplied index terms.

Description: This study investigates the relationships between the use of a zoom tool, the terms they supply to describe the image, and the type of image being viewed. Participants were assigned to two groups, one with access to the tool and one without, and were asked to supply terms to describe forty images, divided into four categories: landscape, portrait, news, and cityscape. The terms provided by participants were categorized according to models proposed in earlier image studies. Findings of the study suggest that there was not a significant difference in the number of terms supplied in relation to access to the tool, but a large variety in use of the tool was demonstrated by the participants. The study shows that there are differences in the level of meaning of the terms supplied in some of the models. The type of image being viewed was related to the number of zooms and relationships between the type of image and the number of terms supplied as well as their level of meaning in the various models from previous studies exist. The results of this study provide further insight into how people think about images and how the manipulation of those images may affect the terms they assign to describe images. The inclusion of these tools in search and retrieval scenarios may affect the outcome of the process and the more collection managers know about how people interact with images will improve their ability to provide access to the growing amount of pictorial information.
Date: May 2009
Creator: Schultz, Leah
Partner: UNT Libraries

Correlates of the Scales of a Modified Screening Version of the Multidimensional Pain Inventory with Depression and Anxiety on a Chronic Pain Sample

Description: This correlational study investigated the relationship between changes in the psychosocial scales of the MPI Screener Patient Report Card (Clark, 1996) with changes in depression and anxiety with a sample of chronic pain patients who completed a 4-week outpatient interdisciplinary treatment program located in a large regional medical center. Race, gender, and primary pain diagnosis were additional predictors. Data analyzed came from an existing patient outcome database (N = 203). Five research assumptions were examined using ten separate (five pre and five post-treatment) hierarchical multiple regression analyses. Statistical significance was found in pre and post-treatment analyses with predictors BDI-II (Beck, Steer, & Brown, 1996) and BAI (Beck & Steer, 1993) on criterions Pain Interference, Emotional Distress, and Life Control, and Total Function.
Date: May 2009
Creator: Walker, Katherine Elise
Partner: UNT Libraries

Growing in Favor with God: Young Children's Spiritual Development and Implications for Christian Education

Description: Experts do not agree on the definition of spiritual development although positive spiritual development benefits society in many ways. Without agreement on the definition of spiritual development and a common understanding of spiritual development, parents, teachers, and pastors who are entrusted with the task of fostering positive spiritual development in Christian settings face the challenges of determining what spiritual development is (definition), the desired goals (culmination) of spiritual development, and the most effective ways to meet those goals (context and content). The purpose of this study was to use data, from the social sciences and Christian points of view, to inform Christian education programs and arrive at recommendations for fostering young children's spiritual development. Data sources include textual literature from the social science and Christian points of view. In addition, the researcher gathered interview data from twenty children's pastors. Research results included: 1. It is possible that spirituality is associated with sensory awareness. 2. Examining spirituality as sensory awareness may lead to focusing on innate qualities of spiritual capacity with a more focused inclusion of children with special needs in faith-based programs, a God-given conscience, and consideration that children may be born with spiritual gifts to express their spiritual nature. 3. Congregations/parishes under utilize intergenerational activities, time for quiet and reflection, and opportunities to talk to children about spiritual matters.
Date: May 2009
Creator: Thomson, Donna R.
Partner: UNT Libraries

Killing the one you love: Examining cases of intimate partner homicide occurring in Dallas, Texas between the years 1990-1997.

Description: Research has consistently shown that intimate partner homicide (IPH) rates have been on a steady downward decline over the past two decades. A relatively recent movement in IPH research, however, has emphasized the need for further dissecting the aggregate trends by factors such as gender, race, and victim-offender relationship. In response to these issues, this study looks at the relationship between IPHs and factors such as gender, race, and age. The present study explores officially reported IPH cases in Dallas, Texas between the years 1990-1997. Specific attention will be paid to the victim's and suspect's age, race, and gender. The findings of the study will assist in identifying significant characteristics of these IPH incidents which may lead to a greater understanding of the types of relationships in which IPH is more likely to occur. Studying the relationship between IPHs and these factors, as this research aims to do, is important to understanding what IPH incident characteristics need more attention to help prevent future incidents from occurring. As a result of this research, a better understanding of whether IPH may occur in certain types of relationships will be reached and then can be further utilized to educate.
Date: May 2009
Creator: Foster, Rebecca
Partner: UNT Libraries

An Actor-Partner Interdependence Model of Attachment Processes, Conflict Resolution, and Psychological Abuse on Relationship Quality in a Community Sample of Heterosexual Couples.

Description: The purpose of this study is to determine whether adult attachment style, psychological abuse in the marriage, conflict resolution strategies, and gender are associated with relational quality in childless couples in the early years of their marriage. Data were collected from 92 married couples who were recruited from university campuses, churches, and community organizations through e-mails, flyers, newspaper advertisements and mailings. Conceptualizing the interdependence of dyadic data from the actor-partner interdependence model (APIM), multilevel linear modeling (MLM) was used to analyze differences within and between couples. It was hypothesized that higher levels of attachment anxiety or avoidance, psychological abuse, and maladaptive conflict resolution strategies would be associated with lower relational quality. Results indicated that attachment avoidance had stronger associations with relational quality than did attachment anxiety, and that higher levels of attachment avoidance were associated with lower relational quality. Additionally, findings indicated a direct negative relationship between both actor and partner psychological abuse and the actor's relational quality. The discussion section addresses strengths and limitations of the present study as well as directions for future research.
Date: May 2009
Creator: Bretz, Karen
Partner: UNT Libraries

The impact of school-based child centered play therapy on academic achievement, self-concept, and teacher-child relationship stress.

Description: This study examined the effectiveness of child centered play therapy (CCPT) with academically at-risk 1st graders. In this quasi-experimental design, twenty-one 1st grade students were assigned to the experimental group and 20 students were assigned to the no treatment control group. The children in the experimental group received two 30 minute play therapy sessions per week for the duration of eight weeks. Three hypotheses were analyzed. A two-factor repeated measures analysis of variances (SPANOVA) were performed on each dependent variable to determine if the experimental group performed differently from the control group across time according to the pretest and posttest results of the Young Child's Achievement Test (YCAT), the Pictorial Scale of Perceived Competence and Social Acceptance for Young Children (PSPCSAYC), and the Student-Teacher Relationship Scale (STRS). Additionally, partial η2 was calculated to determine practical significance. One hypothesis was retained at the .05 level of significance. Findings indicated that academically at-risk 1st graders who participated in CCPT scored statistically significant higher on academic achievement. Specifically, children assigned to the experimental group demonstrated a statistically significant increase in Early Achievement Composite (p = .03) when compared to children assigned to the no treatment control group. No statistical significant results were found on Self-Concept and Student-Teacher Relationship Stress.
Date: May 2009
Creator: Blanco, Pedro J.
Partner: UNT Libraries

Meeting the challenges of diversity: Beliefs of Taiwanese preservice early childhood teachers.

Description: This study examines 797 Taiwanese pre-service early childhood teachers' diversity beliefs using the Personal and Professional Beliefs about Diversity Scales (PPBD). The purposes of this study are to: (a) validate the diversity belief's instrument, (b) investigate the relationship between diversity beliefs in both personal and professional contexts, (c) examine the group differences in diversity beliefs between pre-service teachers based on their demographic background, school characteristics, and cross-cultural experiences, (d) explore the influential determinants of diversity beliefs in the personal and professional contexts, and (f) identify the types of training early childhood pre-service teachers need regarding multicultural education in early childhood. The results indicate that (a) the professional context of PPBD is not robust to use in population outside the U.S. and needed to modify by adding more items based on current diversity literature and the cultural context in Taiwan, (b) school characteristics are the major contributors that foster pre-service teachers' diversity beliefs in both contexts, (c) school location is the most influential factor for the dependent variable of personal beliefs while experience of studying in another city and students' major become the salient factors for the professional beliefs about diversity, (d) the type of educational philosophy is contributing factor of predicting diversity beliefs in both personal and professional contexts. It echoes the multicultural education approaches advocated by Sleeter and Grant (2003), which say that the most important component of multicultural education involves an entire school and touches all areas including students, teachers, staff, and administrators.
Date: May 2009
Creator: He, Su-Chuan
Partner: UNT Libraries

Effects of Picture Exchange Training on Communication Topographies

Description: The Picture Exchange Communication System (PECS) has been used with children with autism and other developmental disabilities as an alternative to vocal communication. Some researchers have reported rapid acquisition of picture-exchange requesting as well as increased vocal speech and increased spontaneous social interactions following PECS training. Earlier research has found that although 3 children with autism learned to exchange pictures for preferred items during PECS training, requesting topographies did not change and vocal speech did not increase after PECS training. The present study evaluated the effects of PECS training on requesting topographies, especially vocal speech, with 3 participants with autism and mental retardation. Only one participant maintained picture-exchange requesting, and none of the participants showed an increase in vocal speech during probe sessions conducted after each PECS training phase.
Date: May 2009
Creator: Haray, Aimee H.
Partner: UNT Libraries