Premorbid social competence construct generalizability across ethnic groups: Path analyses with two premorbid social competence components.

Studied the stability across ethnic groups of interrelations among 5 variables (education, age at 1st psychiatric hospitalization, current age, alcoholism symptom severity, and behavioral adjustment while hospitalized) using path analysis. 24 male Mexican Americans, mean age 39.8 yrs, and 24 male Anglo Americans, mean age 47.1 yrs, were studied. Behavioral adjustment was determined with the MACC Behavioral Adjustment Scale. Certain findings involving 4 variables were consistent with theoretical expectations for the Anglo-American group but were reversed in the Mexican-American group. Methodological and theoretical implications are presented. (2 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Relationship of temperature to composition of copolymers of α-methylstyrene and maleic anhydride

Alternating copolymers of α-methylstyrene and maleic anhydride were prepared in good yields in a decalin solution at temperatures below 80°C. Random copolymers with large percentages of α-methylstyrene were obtained in good yields at higher temperatures. These results were in accord with the charge transfer complex which was characterized by n.m.r. and u.v. spectrophotometry and shown to exist below 80°C. The copolymers were characterized by pyrolysis/gas chromatography and differential scanning calorimetry. The glass transition temperature of poly(α-methylstyrene) and the random copolymer of this monomer and maleic anhydride were approximately 450 and 458 K respectively.     

Metallographic features associated with the penetration of titanium alloy targets

Ballistic tests on Ti-6A1-4V alloy targets have produced a number of interesting features. There was direct evidence of melting at the projectile-target interface. The targets failed by adiabatic shear and evidence for cavity growth in the shear bands is presented. Observed directionality in the ballistic performance of the target material is associated with anisotropy of the target material.     

Multivariate analysis of variance and confidence levels.

Describes how a 2?×?2?×?2 factorial analysis of variance (ANOVA) affects confidence levels of results. Discussion focuses on uses and limitations of statistical tools such as ANOVAs, as well as the appropriate times to use them. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Student importance ratings as an indicator of the structure of actual and ideal sociopsychological climates.

Investigated whether instruments assessing the sociopsychological climate of high school classrooms are appropriate from the students' perspective. Using student importance ratings as an indicator, the structure of sociopsychological climates was assessed by the Classroom Environment Scale with 185 middle-class students in Grades 11 and 12 from 2 large metropolitan high schools. Results indicate that the student importance ratings of sociopsychological climate structures (both actual and ideal) validated a 3-dimensional structure derived from social and human environment perspectives. Results are discussed in terms of the 3 main factors—Relationship, Orderliness/Achievement Climate, and Control; the structure of actual and ideal sociopsychological climates; and implications for classroom research. (44 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Educational seduction: The effect of instructor expressiveness and lecture content on student ratings and achievement.

Previous "educational seduction" research (D. H. Naftulin et al, 1973; J. E. Ware and R. G. Williams, 1975, 1977; Williams and Ware, 1976, 1977) suggests that teacher differences in expressiveness controlled the degree to which lecture content affected student ratings differently from student achievement. The present experiment with 245 university students attempted to replicate statistically this Expressiveness?×?Content?×?Measures interaction in a factorial design which investigated 4 simulated classes. The interaction was found for the high-incentive/no-study-opportunity class and the high-incentive/study-opportunity class, which most resembles typical classes, but not for the low-incentive/study-opportunity class or the low-incentive/no-study-opportunity class, which most resembles educational seduction research. In only the high-incentive/no-study-opportunity class did probes of the interaction replicate education seduction research in which content affected ratings and achievement similarly only for low expressiveness. (18 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Locus of control and attention during meditation.

20 undergraduates were assigned to an internal or external group on the basis of scores on Rotter's Internal–External Locus of Control Scale. A meditation task required Ss to focus their attention on an actual stimulus or an imagined stimulus while recording intruding thoughts by pressing a button on a counter. Results show that an internal locus of control was related to fewer intrusions than an external locus and that the actual stimulus resulted in fewer intrusions than did the imagined stimulus. Results suggest that performance in meditation, and possibly in other self-control procedures, may be influenced by individual differences in deployment of attention. (3 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Paper chromatography of phospholipides on silicic acid impregnated glass fiber filter paper

Summary 1. A reasonably reproducible method has been developed for separating lysolecithin, lecithin,, sphingomyelin, and phosphatidylethanolamine, using glass fiber filter paper impregnated with silicic acid as the chromatographic medium and 1:1 methanol:ethyl ether as the developing solvent. 2. Hot sulfuric acid was used to locate the chromatographed compounds on the chromatogram. The advantages and disadvantages of this reagent and the other spot test reagents used were discussed. 3. No separation between the unsaturated and saturated counterparts of lysolecithin or lecithin was obtained. Supported in part by a grant-in-aid from the National Science Foundation.     

Group and individual accuracy in person perception.

48 male undergraduates employed as judges (Js) participated in an individual and a group session to assess their accuracy in person perception. Using 2 programed cases, J selected from a multiple choice format what he believed to be true about a real person. Results indicated individual sessions to be more efficient and accurate than group sessions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)