The Trinity River flows through the Dallas-Ft. Worth Metroplex in north central Texas where it receives effluents from numerous point sources including seven large regional wastewater treatment facilities. Historically, the Trinity River has been impacted by massive wastewater loadings which often constitute > 80% of the total river discharge during low flow periods. Normally, high mass loadings correspond to the summer months, compounding the effects of a naturally stressful period, characterized by high temperatures and low dissolved oxygen concentrations. Samples from 12 stations were collected quarterly over an 18 month period from the Trinity River and two tributaries. Water samples were analyzed for a variety of water quality variables, including metals, priority pollutants, pesticides, and general water quality parameters. Water samples were also tested for acute and subchronic effects with several test species. Fish were collected at each station and assemblages were characterized using traditional classification techniques and the Index of Biotic Integrity. In addition, sediment samples were assessed for toxic effects which could have adversely impacted fish recruitment and in situ biomonitoring experiments were performed. Quantitative habitat characterization analyses were performed to gain additional information that could possibly explains differences in fish assemblage structure related to habitat variability. Data …

The problem with which this investigation was concerned is that of treating agoraphobia with cognitive-behavioral group therapy and cognitive-behavioral group therapy combined with the drug alprazolam (Xanax). The purpose of the research was twofold. The first goal was to determine the relative effectiveness of the two treatment conditions on phobic behavior, anxiety, and depression. A second goal was to analyze the results and make recommendations concerning each of these modalities available to agoraphobics, their families, and to treatment specialists. The research design of this study was a randomized, pretest-posttest, experimental group design. The sample (N = 15) consisted of Group I (N = 7), who received behavioral-cognitive group therapy combined with the medication alprazolam, and Group II (N = 8), who received behavioral-cognitive group therapy only. The treatment included 15, 2-hour weekly group sessions, with the addition of a brief medication evaluation prior to each group meeting for Group I. During these sessions, the subjects received information about agoraphobia in the form of brief didactic segments, treatment materials, homework assignments, group interaction, and various forms of desensitization. Based on the findings of this study, the following conclusions were drawn: 1. Multidimensional behavioral-cognitive group therapy can significantly reduce phobic avoidance, anxiety, …

The purpose of the study was to investigate independent piano teachers' view of themselves in the light of selected attributes found in sociological writings on the professions. The research problems were: (a) to determine the attitudes which independent piano teachers held toward selected professional attributes; (b) to determine the relationship between the attitudes toward the professional attributes and selected background variables; and (c) to determine the degree of association between these attributes. The problems were addressed by a questionnaire directed to independent piano teachers active in the area of Dallas-Ft. Worth, Texas. Thirty teachers were also interviewed to determine consistency of response and to explore issues which the questionnaire had raised. Reliability and validity were established at acceptable levels. Techniques of statistical analysis included Pearson's product-moment correlation, multiple regression, chi-square in conjunction with Cramer's V_, and factor analysis. The strongest attitudes expressed by the teachers in the study concerned professional self-image, altruism, client orientation, commitment to work, and independence. The most important background variables were age, years of experience, number of students, certification by a professional association, and college degree in music. A multiple regression analysis tested each variable against the dependent variable professional self-image; recognition by others, commitment to …