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  • 1
    Electronic Resource
    Electronic Resource
    Shear field mapping in actin networks by using magnetic tweezers (1996)
    Springer
    European biophysics journal 24 (1996), S. 348-353 
    Details
    ISSN: 1432-1017
    Keywords: Biogels ; actin networks ; magnetic tweezers ; microrheology of polymer networks ; cytoskeleton viscoelasticity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract An improved magnetic bead microrheometer based on phase contrast microscopy allowing high resolution measurements of local deformations within macromolecular networks is applied to study local viscoelastic properties of cross-linked actin networks. By embedding non-magnetic colloidal beads as probes into the networks, the spatial variation of the strain field within cross-linked actin networks can be mapped. Moreover, the Poisson ratio and shear modulus can be measured locally.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00180376
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    MODERATOR RESEARCH AND THE LAW OF SMALL NUMBERS (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Personnel psychology 31 (1978), S. 0 
    Details
    ISSN: 1744-6570
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: The thesis of this paper is that many proposed moderators in personnel psychology are probably illusory, having been created solely by belief in the law of small numbers. Evidence is presented that race as a moderator of test validity is one such illusory moderator. In addition, a model for validity generalization is described which, in addition to eliminating the need for criterion-related validity studies under certain circumstances, strongly calls into question the idea that situations moderate test validity, i.e., the traditional doctrine of situational specificity of test validities. Calculations are presented which show that adequate statistical power in moderator research requires much larger sample sizes than have typically been employed. This requirement is illustrated empirically using validity data for the Army Classification Battery for 35 jobs and 21,000 individuals. These analyses show that (1) even when a moderator is generally assumed to be large, large samples are required to gauge its effect reliably and (2) large sample research may show that moderators that appear plausible and important a priori are nonexistent or trivial in magnitude. The practice of pooling across numerous small sample studies to obtain statistical power equivalent to that of large sample studies is recommended. In light of the evidence that many proposed moderators may not exist, the authors hypothesize that the true structure of underlying relationships in personnel psychology is considerably simpler than personnel psychologists have generally imagined it to be.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-6570.1978.tb00441.x
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  • 3
    Electronic Resource
    Electronic Resource
    JOB SAMPLE VS. PAPER-AND-PENCIL TRADES AND TECHNICAL TESTS: ADVERSE IMPACT AND EXAMINEE ATTITUDES (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Personnel psychology 30 (1977), S. 0 
    Details
    ISSN: 1744-6570
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: The adverse impact of a content-valid job sample test of metal trades skills was compared to that of a well-constructed content-valid written achievement test for the same technical area. The adverse impact of the former was considerably less. In addition, both minority and majority examinees saw the job sample tests as significantly fairer, clearer, and more appropriate in difficulty level. These differences were not only statistically significant but also quite large. These were no significant differences between minority and majority attitudes toward either test. In light of these results, it is suggested that industrial psychologists should explore more fully the potential of performance testing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-6570.1977.tb02088.x
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  • 4
    Electronic Resource
    Electronic Resource
    FURTHER TESTS OF THE SCHMIDT-HUNTER BAYESIAN VALIDITY GENERALIZATION PROCEDURE (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Personnel psychology 32 (1979), S. 0 
    Details
    ISSN: 1744-6570
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: Using an improved version of the Bayesian validity generalization model presented in Schmidt and Hunter (1977), this study showed that most of the between-study variation in observed validity coefficients of various aptitude and ability tests for two types of clerical work and for the job of first-line supervisor is artifactual in nature. These results cast additional doubt on the traditional belief that employment test validities are situationally specific. In addition, the results showed that generalization of validities to new settings was justified even where the hypothesis of situational specificity could not be rejected under the standards used in this study. Implications for the use of aptitude and ability tests in selection and for theory development in industrial-organizational psychology are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-6570.1979.tb02134.x
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of electrical stimulation on chronic wound healing: a meta-analysis (1999)
    Oxford, UK : Blackwell Science Inc
    Wound repair and regeneration 7 (1999), S. 0 
    Details
    ISSN: 1524-475X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The purpose of this meta-analysis was to quantify the effect of electrical stimulation on chronic wound healing. Fifteen studies, which included 24 electrical stimulation samples and 15 control samples, were analyzed. The average rate of healing per week was calculated for the electrical stimulation and control samples. Ninety-five percentage confidence intervals were also calculated. The samples were then grouped by type of electrical stimulation device and chronic wound and reanalyzed. Rate of healing per week was 22% for electrical stimulation samples and 9% for control samples. The net effect of electrical stimulation was 13% per week, an increase of 144% over the control rate. The 95% confidence intervals of the electrical stimulation (18–26%) and control samples (3.8–14%) did not overlap. Electrical stimulation was most effective on pressure ulcers (net effect = 13%). Findings regarding the relative effectiveness of different types of electrical stimulation device were inconclusive. Although electrical stimulation produces a substantial improvement in the healing of chronic wounds, further research is needed to identify which electrical stimulation devices are most effective and which wounds respond best to this treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1524-475X.1999.00495.x
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  • 6
    Electronic Resource
    Electronic Resource
    GENERALIZABLE BIOGRAPHICAL DATA VALIDITY CAN BE ACHIEVED WITHOUT MULTI-ORGANIZATIONAL DEVELOPMENT AND KEYING (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Personnel psychology 52 (1999), S. 0 
    Details
    ISSN: 1744-6570
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: This research showed that the validity of a biodata instrument developed and keyed within a single organization can generalize to other organizations. It also examines a criterion measure-rate of promotional progress-that has not been used extensively in biodata research, but has several characteristics that make its use attractive. The validity of the biodata component of the Manager Profile Record (MPR), developed and keyed within a single organization, as a predictor of rate of managerial progress was cross-validated on a sample of 7,334 managers and staff professionals in 24 organizations. Results indicate the MPR was a valid predictor of rate of promotional progress across all organizations and that validity did not vary greatly across organizations (p= .53, SDp= .05). The MPR was also a valid predictor for both sexes, as well as for managers of all age groups, lengths of company service, and education levels. These findings demonstrate that multiple-firm development and keying of a biodata instrument was not required for generalizable validity, and argue against the hypothesis of situational specificity. Suggestions for developing biodata instruments in single organizations that will generalize to other organizations include careful attention to the validity and reliability of criterion measures and developing validity at the item level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-6570.1999.tb00179.x
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  • 7
    Electronic Resource
    Electronic Resource
    EXPLORING THE BOUNDARY CONDITIONS FOR INTERVIEW VALIDITY: META-ANALYTIC VALIDITY FINDINGS FOR A NEW INTERVIEW TYPE (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Personnel psychology 52 (1999), S. 0 
    Details
    ISSN: 1744-6570
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: This study uses meta-analysis of an extensive predictive validity data-base to explore the boundary conditions for the validity of. the structured interview as presented by McDaniel, Whetzel, Schmidt, and Maurer (1994). The interview examined here differs from traditional structured interviews in being empirically constructed, administered by telephone, and scored later based on a taped transcript. Despite these and other differences, this nontraditional employment interview was found to have essentially the same level of criterion-related validity for supervisory ratings of job performance reported by McDaniel for other structured employment interviews. These findings suggest that a variety of different approaches to the construction, administration, and scoring of structured employment interviews may lead to comparable levels of validity. We hypothesize that this result obtains because different types of structured interviews all measure to varying degrees constructs with known generalizable validity (e.g., conscientiousness and general mental ability). The interview examined here was also found to be a valid predictor of production records, sales volume, absenteeism, and job tenure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-6570.1999.tb00169.x
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  • 8
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    Unknown
    RESEARCH NOTES AND COMMUNICATIONS (1975)
    Chicago : Periodicals Archive Online (PAO)
    Journal of marketing research. 12:3 (1975:Aug.) 347 
    Details
    ISSN: 0022-2437
    Topics: Economics
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:b178-1975-012-03-000012
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  • 9
    Electronic Resource
    Electronic Resource
    Novel type of sex pheromone structure identified fromStigmella malella (Stainton) (Lepidoptera: Nepticulidae) (1995)
    Springer
    Journal of chemical ecology 21 (1995), S. 13-27 
    Details
    ISSN: 1573-1561
    Keywords: Stigmella malella ; Stigmella crataegella ; Trifurcula (Glaucolepis) melanoptera ; Lepidoptera ; Nepticulidae ; sex pheromone ; (S)-(E)-6,8-nonadien-2-ol ; (S)-(Z)-6,8-nonadien-2-ol ; (R)-(E)-6,8-nonadien-2-ol ; (R)-(Z)-6,8-nonadien-2-ol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Short-chain unsaturated chiral methyl carbinols are identified as a new class of lepidopteran pheromone components. The natural female-produced pheromone of the banded apple pigmyStigmella malella (=Nepticula malella) (Stainton) (Lepidoptera: Nepticulidae) was identified to be a mixture of (S)-(E)-6,8-nonadien-2-ol and (S)-(Z)-6,8-nonadien-2-ol. For monitoring traps, a 10:3E:Z blend at 100–1000 µg is recommended. It is suggested that pheromones with similar structures may be specific to Nepticulidae and other related microlepidopteran families.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02033659
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  • 10
    Electronic Resource
    Electronic Resource
    Controversies over integrity testing: Two viewpoints (1996)
    Springer
    Journal of business and psychology 10 (1996), S. 487-501 
    Details
    ISSN: 1573-353X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Abstract In the August 1993 issue ofJournal of Applied Psychology, Deniz Ones, Vish Viswesvaran, and Frank Schmidt published a monograph on the validity of integrity tests as revealed by meta-analysis. They concluded that integrity tests have substantial and generalizable predictive validity for criteria of both overall job performance and counterproductive behaviors on the job (e.g., disciplinary problems, absenteeism, rule breaking, violence on the job, theft, etc.). During the Fall of 1992, the authors sent a preprint of this study to David Lykken of the University of Minnesota, stimulating the exchange of letters that is reproduced here. The doubts, concerns, and feelings about integrity tests expressed by Professor Lykken are likely to be shared by others. The responses by Professors Schmidt, Ones, and Viswesvaran attempt to show that these worries are unfounded.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02251783
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