The problem investigated was to compare the effects of orders of presentation and anchors on the ratings of perceived exertion obtained during bicycle ergometry. Based on the statistical analysis of the data, the following findings were apparent: 1. It was found that there were no significant differences in mean scores of perceived exertion obtained among the orders of presentation, ascending, descending, and random. 2. It was found that the light anchor mean score was significantly greater than those of the heavy or identical anchor. 3. It was found that there were significant differences among the ratings of perceived exertion that may be attributed to changes in work loads. 4. It was found that there were significant differences among the mean scores of ratings of perceived exertion that may be attributed to the interaction of the main effects. As a result of the findings, the following conclusions were deemed appropriate within the limitations of the study: 1. Ratings of perceived exertion in ascending and random order increased proportionately in value as the work load increases. 2. Contrast effects are present in ratings of perceived exertion obtained during bicycle ergometry. 3. The majority of previous findings agree with the present research with …

This study sought to determine the effect upon Tukey's Honestly Significant Difference (HSD) statistic of concurrently violating the assumptions of homogeneity of variance and equal sample sizes. Two forms for the unequal sample size problem were investigated. Kramer's form and the harmonic mean approach were the two unequal sample size procedures studied. The study employed a Monte Carlo simulation procedure which varied sample sizes with a heterogeneity of variance condition. Four thousand experiments were generated. Findings of this study were based upon the empirically obtained significance levels. Five conclusions were reached in this study. The first conclusion was that for the conditions of this study the Kramer form of the HSD statistic is not robust at the .05 or .01 nominal level of significance. A second conclusion was that the harmonic mean form of the HSD statistic is not robust at the .05 and .01 nominal level of significance. A general conclusion reached from all the findings formed the third conclusion. It was that the Kramer form of the HSD test is the preferred procedure under combined assumption violations of variance heterogeneity and unequal sample sizes. Two additional conclusions are based on related findings. The fourth conclusion was that for …

This study initially was designed to produce an in-depth profile of minority students at North Texas State University. After the original dissertation proposal was presented and accepted the "Family Educational Rights and Privacy Act of 1974" was passed. Considerable time passed while NTSU officials developed a legal basis as to the kind of information that would be accessible to doctoral students. The problem of this study was to construct a profile of minority students at NTSU who enrolled during the Fall and Spring semesters, 1974-75. It appears, and very significantly so, that the population percentage for minority students at NTSU is quite disproportionate when compared with the minority population percentage of the State of Texas. For the period examined, one out of every four students of minority designation was Latin-American while three out of four were of Afro-American ethnicity. The average minority student is from a population center that may be designated as a medium sized city to a large metropolitan area. The average minority student at NTSU is admitted from a large urban area high school, and not much preference seems to be given to native Texans. It appears that most minority students are admitted on the same basis …

The problem of this study was to investigate the relationship of the variables of impulse control, adaptive behaviors, responsible behaviors, intelligence, and duration of institutionalization to job performance of the mentally retarded student at the Denton State School, Denton, Texas. The purposes of this study were 1. to ascertain the correlation of the variables of adaptive behaviors, responsible behaviors, impulse control, duration of institutionalization and intelligence quotient to job performance of the mentally retarded student at the Denton State School; 2. to determine which factor or combination of factors would be most useful for predicting job performance effectiveness of the mentally retarded student. It was concluded that of those variables included in this study, intelligence quotient was the best single predictor of job performance. The combination which was found to be the best predictor of job performance was impulse control and intelligence quotient. The variables included in this study (adaptive behaviors, impulse control, responsible behaviors, intelligence quotient, and duration of institutionalization), taken either singly or in combination, do not correlate highly enough with job performance to be of much value for predicting job performance.