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A Comparison of Three Criteria Employed in the Selection of Regression Models Using Simulated and Real Data

A Comparison of Three Criteria Employed in the Selection of Regression Models Using Simulated and Real Data

Date: December 1994
Creator: Graham, D. Scott
Description: Researchers who make predictions from educational data are interested in choosing the best regression model possible. Many criteria have been devised for choosing a full or restricted model, and also for selecting the best subset from an all-possible-subsets regression. The relative practical usefulness of three of the criteria used in selecting a regression model was compared in this study: (a) Mallows' C_p, (b) Amemiya's prediction criterion, and (c) Hagerty and Srinivasan's method involving predictive power. Target correlation matrices with 10,000 cases were simulated so that the matrices had varying degrees of effect sizes. The amount of power for each matrix was calculated after one or two predictors was dropped from the full regression model, for sample sizes ranging from n = 25 to n = 150. Also, the null case, when one predictor was uncorrelated with the other predictors, was considered. In addition, comparisons for regression models selected using C_p and prediction criterion were performed using data from the National Educational Longitudinal Study of 1988.
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Computer Simulation Placements in a Unit of Instruction

Computer Simulation Placements in a Unit of Instruction

Date: December 1994
Creator: Naumann, Steve E. (Steve Eugene)
Description: Educators considering implementing a computer simulation must decide on the optimum placement of the simulation in the unit of instruction to maximize student learning. This study examined student achievement using two different placements for the computer simulation, The Civil War, in a unit of instruction of 8th grade American History students in a suburban middle school.
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The Condition of the Southern Baptist Professoriate : A Comparison with the Carnegie Foundations 1989 National Survey of Faculty

The Condition of the Southern Baptist Professoriate : A Comparison with the Carnegie Foundations 1989 National Survey of Faculty

Date: December 1994
Creator: Reynolds, John Harry
Description: Southern Baptist-Related college faculty attitudes and opinions on areas of higher education most important to the professoriate as identified by the Carnegie Foundation in its 1989 National Survey of Faculty are described in this study and compared with the data from the survey reported by the Carnegie Foundation in The Condition of the Professoriate: Attitudes and Trends, 1989 and Scholarship Reconsidered: Priorities of the Professoriate. The data were compared in the eight areas: goals of collegiate education, academic standards, attitudes about student life, teaching, research, and service, status of the profession, views of the institution, participation in decision-making, and general observations of higher education.
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Cycles and Cliques in Steinhaus Graphs

Cycles and Cliques in Steinhaus Graphs

Date: December 1994
Creator: Lim, Daekeun
Description: In this dissertation several results in Steinhaus graphs are investigated. First under some further conditions imposed on the induced cycles in steinhaus graphs, the order of induced cycles in Steinhaus graphs is at most [(n+3)/2]. Next the results of maximum clique size in Steinhaus graphs are used to enumerate the Steinhaus graphs having maximal cliques. Finally the concept of jumbled graphs and Posa's Lemma are used to show that almost all Steinhaus graphs are Hamiltonian.
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Depression and Heart Rate Variability in Patients with Coronary Artery Disease

Depression and Heart Rate Variability in Patients with Coronary Artery Disease

Date: December 1994
Creator: Saunders, Roger D. (Roger Dean)
Description: Depression is an independent risk factor for morbidity and mortality in patients with coronary artery disease (CAD). Altered autonomic nervous system (ANS) activity, a common feature of depression, is also a risk factor for cardiac events in patients with CAD. Heart rate variability (HRV) reflects ANS activity, and reduced HRV predicts morbidity in cardiac populations. The purpose of this study was to determine whether differences in HRV exist between depressed and nondepressed patients with CAD. Twenty-one depressed inpatients, with angiographically documented CAD were retrospectively matched to 21 nondepressed CAD patients by sex, age, and smoking status. Demographic, medical, psychological interview data, and 24-hour ECG recordings were obtained. Depressed subjects had significantly lower HRV, or trends toward lower HRV, than nondepressed subjects, even after controlling for severity of CAD. Subject groups did not differ on left ventricular ejection fraction, history of myocardial infarction, or any other relevant medical variable assessed. These results suggest that depression is associated with decreased HRV in patients with CAD, and may help to explain the increased rates of cardiac events observed in CAD patients with depression.
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The Development and Validation of the College Student Attitude Toward Female Victims of Domestic Violence (CSAVDV) Scale

The Development and Validation of the College Student Attitude Toward Female Victims of Domestic Violence (CSAVDV) Scale

Date: December 1994
Creator: Wilson, Leanne S. (Leanne Sue)
Description: The purpose of this study was to develop and validate the College Student Attitude Toward Female Victims of Domestic Violence Scale. Procedures used were a 12-day test-retest for reliability, experts assessment for face validity, and a principal component factor analysis for construct validity. Cronbach's alpha for test-retest reliability was .86.
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Dual Factor Socially Desirable Responding and Contrasts in Intrinsic and Extrinsic Religious Motivation

Dual Factor Socially Desirable Responding and Contrasts in Intrinsic and Extrinsic Religious Motivation

Date: December 1994
Creator: McKay, Brock L. (Brock Lindsay)
Description: A follow-up was done to Leak and Fish's (1989) study of intrinsically and extrinsically religious individuals using Paulhus' (1984) Balanced Inventory of Desirable Responding, a two factor scale of socially desirable responding measuring self-deceptive enhancement (SDE) and impression management (IM). 275 introduction to psychology students were group tested and categorized by gender and by religious orientation with Allport and Ross's (1967) fourfold Religious Orientation Scale (ROS). Differences between the four types were hypothesized on the religious relevance of the SDE and IM scale items. A difference score was also computed by contrasting two instructional sets on the BIDR as a measure of variation across situations. Measures of private and public self-consciousness, social anxiety, fear of negative evaluation, and self esteem were included.
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Early Educational Reform in North Germany: its Effects on Post-Reformation German Intellectuals

Early Educational Reform in North Germany: its Effects on Post-Reformation German Intellectuals

Date: December 1994
Creator: Peterson, Rebecca C. (Rebecca Carol)
Description: Martin Luther supported the development of the early German educational system on the basis of both religious and social ideals. His impact endured in the emphasis on obedience and duty to the state evident in the north German educational system throughout the early modern period and the nineteenth century. Luther taught that the state was a gift from God and that service to the state was a personal vocation. This thesis explores the extent to which a select group of nineteenth century German philosophers and historians reflect Luther's teachings. Chapters II and III provide historiography on this topic, survey Luther's view of the state and education, and demonstrate the adherence of nineteenth century German intellectuals to these goals. Chapters IV through VII examine the works respectively of Johann Gottfried Herder, Georg Wilhelm Friedrich Hegel, Leopold von Ranke, and Wilhelm Dilthey, with focus on the interest each had in the reformer's work for its religious, and social content. The common themes found in these authors' works were: the analysis of the membership of the individual in the group, the stress on the uniqueness of individual persons and cultures, the belief that familial authority, as established in the Fourth Commandment, provided the ...
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The Effect of Ambiguity on Peak Weightlifting Performance : A Study of Experienced Weightlifters

The Effect of Ambiguity on Peak Weightlifting Performance : A Study of Experienced Weightlifters

Date: December 1994
Creator: Rattan, Randall Hampton
Description: Recent studies in the area of sport and exercise science have suggested that weightlifting performance may be significantly improved under ambiguous conditions—namely, when the amount to be lifted is unknown. In the present study, procedural concerns from previous studies examining the effect of ambiguity were noted and a methodological variation was introduced.
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The Effect of Hand-Held Weights and Exaggerated Arm Swing on Heart Rate, Blood Pressure, and Ratings of Perceived Exertion during Submaximal Walking

The Effect of Hand-Held Weights and Exaggerated Arm Swing on Heart Rate, Blood Pressure, and Ratings of Perceived Exertion during Submaximal Walking

Date: December 1994
Creator: Austen, Karen Christine
Description: The purpose of this study was to investigate the effect of hand-weights and exaggerated arm swing on heart rate, blood pressure, and ratings of perceived exertion during submaximal walking. Twenty middle-aged (40- 59 years) female volunteers were given four submaximal treadmill tests at 3.0 mph and 0 grade. The four treatment conditions were as follows: 1) walking with unexaggerated arm swing (AS); 2) walking with unexaggerated arm swing with hand-held weights (ASHW); 3) walking with exaggerated arm swing (EAS), and 4) walking with exaggerated arm swing with hand-held weights (EASHW). The testing sequence was randomized and a minimum of 48 hr was given between tests.
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