UNT Theses and Dissertations - Browse

ABOUT BROWSE FEED

The Effects of Positive Reinforcement on the Self-Concept of Children in a Classroom

Description: This study tests whether positive reinforcement consisting of a positive word, eye contact, and a smile would improve the self-concept of students. Sixty boys and girls in two sixth-grade classes were given an adaptation of Gordon's, How I See Myself scale. A baseline consisting of positive reinforcements given by the teacher to the students was taken. Then a positive reinforcement schedule was instituted by the sixth-grade teacher. The experimental group of thirty students received a mean of 24.78 positive reinforcements per class; the control group received a mean of 1.1 positive reinforcements. The subjects were again given the HISM scale, and no significant score differences were found between the experimental group and control group.
Date: August 1974
Creator: Kalish, Robert B.
Partner: UNT Libraries

The Effects of Practice Procedure and Task Difficulty on Tonal Pattern Accuracy.

Description: The study investigated the relative effectiveness of different proportions of time spent on physical and mental practice, in the context of a music performance of a tonal pattern over harmonic progressions of two difficulty levels. Using a sampling without replacement procedure, sixty undergraduate students were assigned to four practice groups partially blocked for musical instrument. The groups included a physical practice group, a mental practice group and two combined mental and physical practice groups in the proportions of (a) 66% physical and 33% mental, and (b) 33% physical and 66% mental. Each subject performed a pretest, a 3 minute practice session, and a posttest on both harmonic progressions. Presentation of the harmonic progressions were counterbalanced to control for practice effects All pre- and posttests were recorded and scored according to number of note errors. An ANCOVA procedure using pretest scores as covariates revealed that: (a) there were no differences between the different practice groups on the measure of note errors, (b) there was a significant difference between the two harmonic progressions on the measure of note errors, such that performance on the easy progression was significantly better than performance on the hard progression, and (c) there was a significant interaction between harmonic difficulty level and the practice groups. Post hoc comparisons between the adjusted means of the practice groups on the two tasks revealed that for the mental and the 33:66 combined practice groups, groups consisting of a higher percentage of mental practice, performance on the easy harmonic progression was significantly better than on the hard harmonic progression. However for the physical and the 66:33 combined practice groups, groups consisting of a higher percentage of physical practice, performance on both harmonic progressions was not significantly different and was as good as the performance of all practice groups on the easy ...
Date: May 2003
Creator: Cahn, Dan
Partner: UNT Libraries

The Effects of Pre-Kindergarten on Spanish-Speaking Bilingual Students Taking the Third Grade TAKS Reading Test

Description: The purpose of this dissertation is to provide research and data examining the impact of pre-kindergarten on Spanish-speaking ESL students on the third grade TAKS Reading test scores. The two questions that guided this study are: (1) As measured by the third grade TAKS reading test, what is the relationship between those limited english proficient (LEP) Spanish-speaking children who attended a pre-kindergarten program and those who did not attend a pre-kindergarten program? and (2) As measured by the third grade TAKS Reading test, how do the test scores of those LEP Spanish-speaking third graders who attended the district's pre-k program in 2000-2001 and testing in 2005, differ from those who attended the district's pre-k program in 2001-2002 and testing in 2006? The research study used a quantitative methodology designed as causal-comparative analysis. Independent t-tests were used to determine if there were any significant differences in test scores of third graders between the two groups of students. Although the results of the statistical analysis revealed some isolated statistically significant differences between those Spanish-speaking bilingual students who attended pre-kindergarten and those who did not, the data showed no real differences in the test scores of those students.
Date: December 2008
Creator: Ringhauser, John T.
Partner: UNT Libraries

The Effects of Premenstrual Syndrome Symptomatology on Marital Satisfaction

Description: Many women reporting PMS symptoms state their symptoms affect their mood, social, and family functioning. This study attempted to provide clinicians with information to assist in psychotherapeutic intervention, by determining the effect PMS has on marital satisfaction. Nineteen female subjects reporting PMS symptoms and their partners completed the study. The Marital Satisfaction Inventory - Revised (MSI-R) and the Moos Menstrual Distress Questionnaire-Form T (MDQ-form T) were used to determine if the nineteen couples reported marital distress as a result of the women's cyclical premenstrual symptoms. The results of the study suggested that the women and their partners, report high levels of marital distress that is not reflective of the cyclical nature of the PMS symptomatology. Scores on the MSI-R for the subjects and their partners indicated the couples perceived level of distress in the t-50 to t-70 range on scales 3-8 is consistent throughout the menstrual cycle. The couples reported higher levels of marital distress than would be the expected norm, suggesting that PMS may be a contributing factor to the level of distress they reported experiencing. This study did not include a control group, which would have provided a norm for couples who do not report PMS by which to compare the MSI-R scores.
Access: This item is restricted to UNT Community Members. Login required if off-campus.
Date: August 2003
Creator: Rodgers, Glenda S.
Partner: UNT Libraries

The Effects of Preregistration Advisement of Students by a Counselor on the Choice of College Majors and Other Selected Criterion Measures

Description: The problem for consideration in this study was an investigation of the effects of two methods of preregistration advisement of junior college freshmen. Specifically, the following questions were posed. What would be the effects on college students of an individual preregistration advisement interview with a member of the professional counseling staff as compared to a group advisement session? Would the advisement interview for students produce differences in (1) the types of majors selected, (2) probabilities of success in declared educational objectives, (3) perceptions of the environment, (4) changes of major, (5) course changes, (6) failures to complete registration, (7) withdrawals during the first eight weeks of classes, and (8) number of course deficiencies reported at mid-semester? An auxiliary consideration was the following. What would be the effects of providing information about technical-occupational programs in the form of brochures?
Date: August 1969
Creator: Smith, Royal Everett
Partner: UNT Libraries

The Effects of Price and Durability on Individual Discounting Functions When Purchasing Hypothetical Goods in a Simulated Internet Store

Description: Online shopping has rapidly expanded in the last decade. Online shopping necessarily imposes delays on all transactions. Behavior analysis has long studied the effects of delay on choice. Additionally, a number of researchers are beginning to study consumer behavior using a behavior-analytic approach. The current study attempted to extend research focusing on consumer behavior in online contexts. The experimenters attempted to evaluate whether goods acquire functional properties and whether these properties influence consumer choice. The researchers were specifically interested in studying acquisition costs and durability and in simulating a natural online shopping environment. Results from the current study extend the findings showing that delay and price influence choice. The data from the current study provide mixed evidence for control by item durability.
Date: August 2012
Creator: Gesick, Jeffrey Glen
Partner: UNT Libraries

The Effects of Priming and Contingent Attention on Novel Play Episodes in a Child with Autism

Description: This study evaluated the effects of priming and contingent attention procedures on play variability in a child with autism. During baseline, numbers of novel play episodes, different play episodes, and actions occurred at low rates. Priming procedures did not produce desired change. When contingent attention was implemented, significant increases occurred in novel play episodes, different actions, and different play episodes. These results show that attention contingent on variable play episodes can increase the number of novel responses to play materials. The results are discussed within the context of treatment and future research.
Date: August 2002
Creator: Josendale, Julianne R.
Partner: UNT Libraries

The Effects of Priming, Culture, and Context on Perception of Facial Emotion, Self-representation and Thought: Brazil and the United States

Description: Individualist and collectivist cultural approaches describe the relationship between an individual and his or her social surroundings. the current study had a two-fold purpose. the first was to investigate whether Brazilians, like other collective peoples, displayed more group self-representations, categorized items more relationally and paid more attention to context than Americans. the second purpose of this study was to investigate if counter-cultural primes played a role in activating either collective or individual selves. Both American (n = 100) and Brazilian (n = 101) participants were assigned either to a no-prime condition or a counter-cultural prime condition and then were asked to rate emotion cartoons, categorize items, complete the Twenty Statement Test (TST), and choose a representative object. As expected, unprimed Brazilian participants displayed more collectivist patterns on emotional (F[1,196] = 10.1, p = .001, ?²= .049; F[1,196] = 7.9, p = .006, ?²= .038; F[1,196] = 9.0, p = .005, ?²= .044) and cognitive (F[1, 196] = 6.0, p < .01, ?² = .03) tasks than Americans. However, Brazilians offered more individualist self-representations (F[1, 195] = 24.0, p < .001, ?² = .11) than American participants. Priming only had a marginal effect on item categorization (F[1,194] = 3.9, p = .051, ?² = .02). Understanding such cultural differences is necessary in the development of clinicians’ multicultural competence. Therefore, these findings, along with the strengths and limitations of this study and suggestions for future research, are discussed.
Date: December 2011
Creator: Hoersting, Raquel Carvalho
Partner: UNT Libraries

Effects of Problem-based Learning on a Fifth Grade Language Arts Classroom

Description: The main purpose of this qualitative research was to discover the effects of problem-based learning on a fifth grade language arts classroom. The secondary purpose was to examine how receptive fifth grade students were to a new way of learning. In this descriptive study, a group of nine students created an alternate reality game as part of a problem-based learning module. The instructional design of the study included three weeks for students to design and construct their games and one week to play, receive feedback and revise based on feedback. Through reflective blogs, semi-structured interviews, video recordings, and observations, data was collected to analyze. Over a period of five months, the data was coded and arranged into categories. The categories merged into themes. The results and findings revealed the impact collaborative groups have on design and enjoyment. Self-regulation skills were found to be lacking in most of the students, intrinsic motivation increased for some students while others developed positive outcomes beyond the scope of this study.
Date: May 2013
Creator: Blackwell, Deborah
Partner: UNT Libraries

Effects of Processing Techniques on Mechanical Properties of Selected Polymers

Description: The mechanical properties of a polymer represent the critical characteristics to be considered when determining the applications for it. The same polymer processed with different methods can exhibit different mechanical properties. The purpose of this study is to investigate the difference in mechanical properties of the selected polymers caused by different processing techniques and conditions. Three polymers were studied, including low density polyethylene (LDPE), polypropylene (PP), and NEXPRENE® 1287A. Samples were processed with injection molding and compression molding under different processing condition. Tensile and DMA tests were performed on these samples. The acquired data of strain at break from the tensile tests and storage modulus from the DMA were utilized to calculate brittleness. Calculated brittleness values were used to perform analysis of variance (ANOVA) to investigate the statistical significance of the processing technique and condition. It was found that different processing techniques affect the brittleness significantly. The processing technique is the major factor affecting brittleness of PP and NEXPRENE, and the processing temperature is the major factor affecting brittleness of LDPE.
Date: May 2013
Creator: Dong, Yao
Partner: UNT Libraries

The Effects of Professional Learning Communities on Student Achievement

Description: The purpose of this study was to examine data from the Early Childhood Longitudinal Study: Kindergarten Class of 1998-99 (ECLS-K) report, identify questions and statements that correlate to the dimensions of professional learning communities (PLCs), and determine the effect PLCs have on student achievement based on the ECLS-K data. In addition, the rationale for doing this research was to measure growth in student achievement over time. A multilevel growth model was used for this research. Univariate analysis was conducted in order to reveal frequencies and percentages associated with teacher responses. Bivariate analysis was applied in order to determine the inter-correlations between the fourteen variables. Once the inter-correlations were determined from the bivariate analysis, principal component analysis was applied in order to reveal the theoretical relationship between the variables. Through the use of principal components a set of correlated variables is transformed into a set of structure coefficient: support and collaborative. Finally, a multilevel growth model was used in order to determine the effect that each variable within the support and collaborative structure coefficients had on student achievement over time. This study revealed a number of variables within the ECLS-K report that correspond to the dimensions of PLCs have a statistically significant effect on student achievement in math and reading over time. This study demonstrated that support and collaborative variables within PLCs have a positive effect on both math and reading IRT achievement from 3rd grade to 5th grade.
Date: August 2009
Creator: Burdett, John M.
Partner: UNT Libraries

The Effects of Programmed Reinforcment and Chained Mastery Criteria on Yoga Pose Performance in Two Young Children with Autism

Description: Community exercise can offer many benefits for children, including the opportunity to engage in physical activity and interact with peers in a social setting. Children with autism do not engage in as many community activities as their typical peers. This study examines conditions to teach young children to complete yoga poses to mastery. The effects of prompting, programmed reinforcers, and a chaining criteria were evaluated using a comparison design with two baselines and one intervention condition, replicated across two children with autism. Both children mastered performance of all four targeted yoga poses. The findings are discussed in the context of previous research on the benefits of yoga.
Date: December 2015
Creator: Nguyen, Linda
Partner: UNT Libraries

The Effects of Project PACE on Adolescent Females' Physical Activity Readiness

Description: This study evaluated the effects of Project PACE, a program designed to increase physical activity, on the physical activity level and selected psychosocial variables of sedentary adolescent females ages 12 to 18. Psychosocial variables included self efficacy, attitude, perception of barriers, perceived social support, and knowledge. Of the 69 participants, 40 were enrolled in the treatment group and 29 were enrolled in the control group at the start of the study. The only significant differences were found for attitudes towards physical activity at base line. Findings from this study suggest that implementation of Project PACE protocol in school settings may produce some positive effects, but no significant findings were detected.
Date: May 1998
Creator: Williams, Christy Nicole
Partner: UNT Libraries

Effects of Prompting and Fading Procedures to Establish Following the Line of Regard in A Child with Autism

Description: Children with autism show deficits in communication skills, including joint attention, a component of which is following the line of regard. Two experiments were conducted. The first experiment examined how prompting and fading procedures effected following the line of regard in a child with autism. The second experiment examined this effect on the child's learning the names of novel objects. One 10-year-old boy, with a primary diagnosis of autism, participated. A changing criterion design was used in Experiment I. Experiment II used a succession of interventions to assess incidental learning of novel object names. Results indicate that prompting and fading with reinforcement was an effective training procedure for teaching this child to follow the line of regard. However, this skill did not automatically lead to the child's learning the names of novel objects.
Date: December 2004
Creator: Horr, Amy C.
Partner: UNT Libraries

The Effects of Providing a Brief Training Package to Daycare Teachers to Teach a Child a Sign for Social Attention

Description: Behavioral skills training (BST) packages have been successful in increasing change agents’ correct implementation of various procedures. The current study evaluated the effects of a brief BST package to train daycare teachers to implement incidental teaching procedures with toddlers. The brief BST consisted of a set of written instructions, a two-minute video model, rehearsal, and feedback during session. Results demonstrated that teachers increased their correct implementation of incidental teaching procedures following training. In addition, two of the three toddlers increased the frequency of signs to request attention.
Date: August 2014
Creator: Zimmerman, Valerie L. V.
Partner: UNT Libraries

Effects of Psychoeducation on Opinions about Mental Illness, Attitudes toward Help Seeking, and Expectations about Psychotherapy

Description: The effect of psychoeducation on opinions about mental illness, attitudes toward help seeking, and expectations about psychotherapy were investigated. One group served as a control, one group read a written lecture on information about mental illness, and one group read a written lecture on information about psychotherapy. The control group, and experimental groups immediately after reading the lecture, completed demographic information, Attitudes Toward Help Seeking-Short Form, Expectations About Counseling-Brief Form, Nunnally Conceptions of Mental Illness Questionnaire, and three College Adjustment Scales (Depression, Anxiety, Self Esteem). Participants were asked to complete the same measures four weeks after the initial assessment. Results: No significant improvement in attitudes toward help seeking was demonstrated in either experimental group, at either time of testing. Expectations about psychotherapy were significantly improved in both experimental groups, which remained significant at Time 2. Opinions about mental illness demonstrated an immediate significant improvement in attitudes with the mental illness lecture group, however this effect did not remain at Time 2. The psychotherapy lecture group did not have significantly improved opinions about mental illness at either time of testing. The control group did not produce any significant changes between Time 1 and Time 2 testing. Experimental group scores demonstrated similarity with those who had previous experience with psychotherapy. No relationship was found between level of adjustment and attitudes toward help seeking, expectations about psychotherapy, or opinions about mental illness at either time of testing.
Date: August 1999
Creator: Gonzalez, Jodi Marie
Partner: UNT Libraries

Effects of Pulp and Paper Mill Effluent on Stream Primary Productivity in the Lower Sulphur River, Texas

Description: Responses of periphyton and phytoplankton productivity in the lower Sulphur River (Texas-Arkansas) to bleach-kraft mill effluent (BKME) were monitored using in situ ¹⁴C incubation. Carbon assimilation rates measured downstream of mill discharge were substantially reduced from upstream levels. Periphyton and phytoplankton chlorophyll a concentrations remained relatively unchanged by the presence of BKME. Periphyton ash-free dry weight increased near the mill outfall, but decreased further downstream. Calculated productivity efficiencies (productivity:biomass) varied with variations in ¹⁴C rates. A laboratory bioassay was designed to determine the effect of BKME light-attenuation on photosynthetic rates of upstream Sulphur River periphyton and Selenastrum capricornutum Prinz. Pooled results of bioassay runs indicated a 20 per cent BKME concentration effectively reduced control ¹⁴C-assimilation levels by 50 per cent. The downstream reduction observed for in situ productivity was 5 per cent lower than that predicted by the color bioassay.
Date: August 1982
Creator: Davis, Terrence Marvin
Partner: UNT Libraries