Genetic variability of human plasma and erythrocyte lipids

Genetic variation of fasting plasma lipids, lipoproteins and erythrocyte membrane lipids was studied in 67 sets of like-sexed twins and 3 sets of triplets. All of the plasma lipids were more variable in dizygotic twins than monozygotic twins with the exception of phosphatidyl ethanolamine, but only cholesteryl esters, lecithin, phosphatidyl inositol and β-lipoprotein showed significant genetic variation. In contrast, no significant genetic variability was found in any of the erythrocyte membrane lipids and erythrocyte phosphatidyl ethanolamine had significantly greater variation in monozygotic twins. Two sets of twins had an extra lipoprotein band (slow α1); in one family the variant appeared to be segregating as a dominant trait. Presented in part at the ISF-AOCS World Congress, Chicago, September 1970.     

Premature consensus on consensus? Effects of sample-based versus self-based consensus information.

Evaluated the combined effect of self-based (knowledge of one's own behavior) and sample-based information (knowledge of others' behavior) and investigated R. D. Hansen and J. M. Donoghue's (see record 1979-23605-001) conclusion that population estimates and trait attributions are more affected by self-based than sample-based consensus. 84 paid Ss assigned to a self- or sample-based group responded to a pretested comedy tape or to the tape and 2 target people's opinions (funny/not funny) of the tape. Results show that either self- or sample-based consensus alone affected population estimates and trait attributions. For Ss with self-based consensus, additional congruent sample information enhanced and conflicting sample information attenuated the effects produced by self-based consensus. Thus Hansen and Donoghue's conclusion that one's own behavior is taken as the norm despite the contrary behavior of others is demonstrably premature. (18 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Precise Coulometric Titrations of Halides

A method has been developed for the precise assay of halides by constant-current coulometric titration with silver ions generated at a silver anode. It is shown that a 4 milliequivalents sample of halide can be titrated with standard deviation of 0.005 percent.     

The potential for bicultural communication in a dyadic situation.

Studied cross-cultural communication with Canadian university students who identified themselves as French-speaking or English-speaking. Ss were divided into 36 French-English pairs (18 of which were tested in a French setting and 18 in an English setting) and 36 same-ethnic pairs. The pairs performed an experimental task under 1 of 3 instructional sets in which Ss were forced to communicate, communication was optional, or no communication set was provided. Each condition was followed by an unstructured period where Ss were free to communicate. Following the communication task, Ss completed a questionnaire which assessed their attitudes about communicating with their partner. Results were analyzed in terms of patterns of communication, content of communication, and languages used for communication. Findings suggest that effective cross-cultural communication is possible and that, at least in a dyadic situation, members of 2 ethnic groups are motivated to communicate. (French summary) (21 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Shear modulus in closely packed gel suspensions

Rheological properties and swelling were examined in a series of concentrations of particles of crosslinked polyacrylate gels in water or salt solutions. The modulus during steady shear G_s = 2τ²/P₁₁-P₂₂ was determined from shear stress τ and primary normal force difference P₁₁-P₂₂ in a cone-and-plate rheometer. G_s was nearly constant with shear rate for the gel particles in the closely packed condition. The dynamic storage modulus G′ determined by ecentric rotating disc rheometry increased with increasing frequency for all concentrations. The apparent equilibrium shear modulus G_e determined by stress relaxation agreed closely at all concentrations and ionic strengths with the corresponding values of G_s, and hence G_s is considered a good estimate of equilibrium shear modulus for this gel material.     

The 1955 and 1957 research conferences: The identification of creative scientific talent.

2 conferences, one in August 1955 and the other in August 1957, on "The Identification of Creative Scientific Talent" were supported financially by the National Science Foundation. Titles of research reports and authors are presented. Reports of special committees at each conference are summarized. "A multiplicity of hypotheses and problems needing research… emerged throughout both conferences. It is hoped that concurrent attacks on problems of creativity will be undertaken by researchers in industry, government, universities, and school systems." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

An investigation of the criterion problem for one group of medical specialists.

The sample consisted of 190 Utah physicians fully certified as specialists by an American Board. 80 scores relevant to the performance of these physicians were intercorrelated and factor analyzed using the principal components solution based on eigenvalues and eigenvectors. The 29 factors which had an eigenvalue greater than 1.00 were rotated by the varimax procedure and interpreted. The most important finding was the great criterion complexity for this group of medical specialists. This complexity suggests that one cannot adequately measure physician performance on the basis of a single score or a few scores. Instead, one must obtain a relatively large number of scores. Performance in poth premedical and medical education was independent of performance as a physician. (19 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Compatibility in a blend of poly(2,3-dichloro-1-propyl acrylate) and poly(glycidyl methacrylate–co–ethyl acrylate)

The compatibility of mixtures of poly(2,3-dichloro-1-propyl acrylate) and poly(glycidyl methacrylate–co–ethyl acrylate) has been investigated by measurement of the following properties: density, light transmission, glass transition temperature, vapor absorption, and NMR relaxation times. To varying degrees, all results provided evidence supporting the contention that these mixtures are compatible.     

Graphic ratings and attitude measurement: A comparison of research tactics.

This paper suggests that under certain conditions attitudes may be measured as validly and as reliably with a single "attitude report question" as with a multi-item attitude scale. 84 physicans responded to 8 Guttman scales, and also rated their attitudes on 8 comparable graphic rating scales. These data were factor analyzed, and the communalities used as an estimate of the minimal scale reliability. In general, the graphic rating scales proved as reliable as the Guttman scales. An examination of the interscale correlations showed that similar conclusions would be drawn from either technique. It is suggested that a single graphic rating may usefully substitute for a multi-item attitude scale when the attitude continuum is unidimensional. (PsycINFO Database Record (c) 2010 APA, all rights reserved)