Measurements of the absolute viscosity of deuterium oxide of 99.5 percent purity and of water were made over the range 5° to 125° C. It is estimated that t hese determinations are accurate within 0.1 percent in relation to the value 1.0050 centipoise for the viscosity of water at 20 0 C. The work also included determinations of t he density of deuterium oxide over the range 90° to 125 0 C. Values for the viscosity and density of 100-percent deuterium oxide were obtained by linear extrapolations. The ratio of the viscosity of deuterium oxide to that of water at the same temperature was found to be 1.3052 at 5° C. This ratio decreased at a diminishing rate with increase in temperature to a value of 1.1456 at 125° C.

Dispositional differences among several university majors and across gender were examined in this exploratory study, using Facione's California Critical Thinking Disposition Inventory. Participants were 334 baccalaureate undergraduates (121 males, 213 females) enrolled in majors classified as practice disciplines (i.e., nursing, education, business) and nonpractice disciplines (i.e., English, history, psychology). A MANCOVA with grade point average as a covariate was conducted for majors, indicating significant main effects for major. Highest scores generally were found in English, psychology, and nursing. When majors were grouped into practice and nonpractice disciplines, nonpractice had generally higher disposition scores, and female scores in both practice and nonpractice disciplines were higher than males on Open-Mindedness and Maturity.

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The factor structure of the 1992 California Critical Thinking Disposition Inventory and its stability across sex and different types of college majors were examined in this exploratory study. Participants were 499 undergraduate students (151 men, 342 women, missing data = 6) at a four-year mid-Atlantic public university, ranging in age from 18 to 54 years ( M = 23.3). Students were enrolled in majors classified as practice disciplines (nursing, education, and business) and nonpractice disciplines (English, history, and psychology). The inventory, a 75-item, forced-choice adjective checklist scale, yields seven subscores and a total score assessing the disposition toward critical thinking. Analysis indicated that, despite the small sample, the generated factor structure of the inventory was highly stable or similar for men and women for Factors I (Facione, et al. Truth-seeking) and II (Facione, et al. Open-mindedness) and was moderately stable for Factors IV (Facione, et al. Systematicity) and V (Facione, et al. Confidence). Factors III (Analyticity), VI (Inquisitiveness), and VII (Maturity) were not stable. For practice and nonpractice disciplines and for major, only Factor I was stable. The findings suggest further refinement of the inventory.