Showing papers by "Ohio State University published in 1981"

Attitudes and Persuasion: Classic and Contemporary Approaches

Abstract: Attitudes and Persuasion -- Foreword -- Preface -- Attitudes and Persuasion -- Introduction to Attitudes and Persuasion -- Conditioning and Modeling Approaches -- The Message-learning Approach -- Judgmental Approaches -- Motivational Approaches -- Attributional Approaches -- Combinatory Approaches -- Self-persuasion Approaches -- Epilog: A General Framework for Understanding Attitude Change Processes

The psychology of social impact.

Abstract: The author proposes a theory of social im- pact specifying the effect of other persons on an in- dividual. According to the theory, when other people are the source of impact and the individual is the target, impact should be a multiplicative function of the strength, immediacy, and number of other people. Fur- thermore, impact should take the form of a power func- tion, with the marginal effect of the Nth other person being less than that of the (N — l)th. Finally, when other people stand with the individual as the target of forces from outside the group, impact should be divided such that the resultant is an inverse power function of the strength, immediacy, and number of persons stand- ing together. The author reviews relevant evidence from research on conformity and imitation, stage fright and embarrassment, news interest, bystander interven- tion, tipping, inquiring for Christ, productivity in groups, and crowding in rats. He also discusses the unresolved issues and desirable characteristics of the theory.

The Relationship of Career-Related Self-Efficacy Expectations to Perceived Career Options in College Women and Men.

Abstract: The present study was designed to investigate the applicability of Bandura's self-efficacy theory to the process of career decision making and, in particular, to investigate the possible importance of self-efficacy expectations in the explanation of women's continued underrepresentation in many professional and managerial occupations. Subjects, 134 female and 101 male undergraduates, were asked to indicate their perceptions of their capabilities to successfully complete the educational requirements and job duties of each of 10 traditionally female and 10 traditionally male occupations. In addition, subjects indicated their degree of interest in and extent of consideration of each occupation. Finally, American College Test Math and English subtest scores were obtained. Results indicated significant and consistent sex differences in selfefficacy with regard to traditional versus nontraditional (for females) occupations: Males reported equivalent self-efficacy with regard to the two classes of occupations, females reported significantly higher levels of self-efficacy with regard to traditional occupations and significantly lower levels of self-efficacy with regard to nontraditiona l occupations. Further, self-efficacy expectations were related to both the type and number of occupations considered and to expressed interest in traditional and nontraditional occupations. Implications for further investigation of the utility of self-efficacy theory to the understanding of vocational behavior and for the applications of the model to career counseling are discussed.

Construct Validity: A Review of Basic Issues and Marketing Practices:

Abstract: An attempt is made to explicate the meaning of construct validity. Operational issues in the process of construct validation are investigated. A subset of JMR studies involving construct validation...

Foraging Efficiency and Body Size: A Study of Optimal Diet and Habitat Use by Bluegills

Abstract: A foraging model was developed to predict the optimal diet breadth and maximum energetic intake of a given-sized fish foraging in each of three aquatic habitats: the open water, vegetation, and bare sediments. Model parameters of prey encounter rates and prey handling times were quantified as functions of fish size, prey density, and prey size through a series of laboratory feeding experiments using the bluegill sunfish (Lepomis macrochirus). Results of these experiments show both searching ability and prey handling efficiency to increase with increasing fish size. Predictions of prey size selection and optimal habitat use based upon maximizing energetic gain were then examined in a small Michigan lake for three size classes of bluegills. Bluegills >100 mm standard length were highly size selective in their feeding and their diets closely matched predictions of an optimal diet model. From two estimates of relative prey visibilities I show that these fish selected larger prey items than would be predicted if prey were consumed "as encountered." Habitat use of large bluegills was also shown to maximize foraging return as fish switched from utilizing vegetation- living prey to utilizing open-water zooplankton as relative foraging profitabilities in the two habitats changed across the summer. Bluegills < 100 mm standard length were restricted in their habitat use, remaining in or near the vegetation despite demonstrated increases in foraging return available in the open-water habitat. Size-related predation risk apparently accounts for differences in habitat use between bluegill size classes, and its consequences for intra- and interspecific competition between size classes are discussed.

A Survey of Interconnection Networks

Abstract: Concurrent processing depends on interconnection networks for communication among processors and memory modules. Various network topologies and switching strategies are covered here.

Approaching Supervision from a Developmental Perspective: The Counselor Complexity Model.

Abstract: This article presents a developmental model of counselor supervision that conceptualizes the training process as a sequence of identifiable stages through which the trainee progresses. The progress of the supervisee is described from the entry level counselor through the advanced master counselor stage. Characteristics of supervisees at each of the four levels of the model are discussed as well as the appropriate supervision environments that encourage development to the next highest level. The supervisor skills of discrimination and the creating of environments are discussed in relation to the characteristics of supervisees and the appropriate environments for the supervision process. Suggestions are offered for future directions of supervision research. Counselor training lacks a systematic de

Ten Years of Research on Group Size and Helping

Abstract: In the decade following Latane and Darley's publication of the discovery that the presence of other people inhibits an individual from intervening in an emergency, numerous researchers have attempted to replicate this finding, extend its range of applicability, and determine what boundary conditions limit it. In the present article, we review both published and unpublished research, with special attention to the nature of the precipitating incident, the ambiguity of the helping situation, laboratory versus field settings, characteristics of the subjects, of the victim, and of other bystanders, and the amount and kinds of communication among bystanders. We conclude that, despite the great diversity of styles, settings, and techniques among the studies, the social inhibition of helping is a remarkably consistent phenomenon; but we identify some conditions under which the effect can be weakened or eliminated. Finally, we explore the implications of these findings for assessing and increasing a victim's likelihood of receiving help. Some 10 years have passed since Latane and Darley (1970) published their monograph reporting the results of a program of research on bystander intervention in emergencies. This research provided strong support for the general proposition that "the presence of other people serves to inhibit the impulse to help" (p. 38), Their work elicited a good deal of interest, and it has stimulated a large amount of subsequent research in this area. We see at least four reasons for the in

Clinical trial in duchenne dystrophy. I. The design of the protocol

Abstract: Therapeutic trials in muscular dystrophy have often been inconclusive. A protocol has been designed which selects patients with Duchenne muscular dystrophy and permits accurate measurement of their status. An integral part of the protocol is a system for checking on the consistency of the data obtained using a computer program.

The Buying Center: Structure and Interaction Patterns:

Abstract: This article reports a first step toward developing some quantifiable dimensions of the industrial buying task group, called the buying center. Group composition and interaction processes were exam...

The Social Impact of Majorities and Minorities.

Abstract: Previous theorizing about social influence processes has led to the emergence of two research traditions, each focusing on only a subset of influence situations. Research on conformity looks at the influence of the majority on a passive minority, whereas research on innovation considers the influence of active minorities on a silent majority. In the present article, we review these two lines of research, as well as some recent evidence, from the perspective of a new theory of social impact. This theory views social influence as resulting from forces operating in a social force field and proposes that influence by either a majority or a minority will be a multiplicative function of the strength, immediacy, and number of its members. Social impact theory offers a general model of social influence processes that integrates previous theoretical formulations and empirical findings and accounts for the reciprocal influence of majorities and minorities. By viewing social influence as a unitary concept, social impact theory permits comparisons between conformity and innovation and predicts the relative magnitude of their effects.

A Monte Carlo study of thirty internal criterion measures for cluster analysis.

Abstract: A Monte Carlo evaluation of thirty internal criterion measures for cluster analysis was conducted. Artificial data sets were constructed with clusters which exhibited the properties of internal cohesion and external isolation. The data sets were analyzed by four hierarchical clustering methods. The resulting values of the internal criteria were compared with two external criterion indices which determined the degree of recovery of correct cluster structure by the algorithms. The results indicated that a subset of internal criterion measures could be identified which appear to be valid indices of correct cluster recovery. Indices from this subset could form the basis of a permutation test for the existence of cluster structure or a clustering algorithm.

Alternative methods to smooth the Earth's gravity field

Abstract: Convolutions on the sphere with corresponding convolution theorems are developed for one and two dimensional functions. Some of these results are used in a study of isotropic smoothing operators or filters. Well known filters in Fourier spectral analysis, such as the rectangular, Gaussian, and Hanning filters, are adapted for data on a sphere. The low-pass filter most often used on gravity data is the rectangular (or Pellinen) filter. However, its spectrum has relatively large sidelobes; and therefore, this filter passes a considerable part of the upper end of the gravity spectrum. The spherical adaptations of the Gaussian and Hanning filters are more efficient in suppressing the high-frequency components of the gravity field since their frequency response functions are strongly field since their frequency response functions are strongly tapered at the high frequencies with no, or small, sidelobes. Formulas are given for practical implementation of these new filters.

The North Pacific Oscillation

Abstract: A climatological study of the North Pacific Oscillation (NPO) during Januaries and winters (D-J-F) between 1906 and 1978 is presented. The NPO is defined in terms of opposition in sign of mean temperature anomaly between western Alaska-eastern Siberia (as represented by the stations at Dutch Harbor and St. Paul, Alaska) and western Canada (as represented by Edmonton). The two oscillation modes, Aleutians below normal temperature (Edmonton above normal) and Aleutians above normal temperature (Edmonton below normal), are associated with variations in the strength of the zonal westerlies over the Pacific and North America which in turn result from longitudinal variations in the mean position of the Aleutian low. A westward location of the mean low. over the Sea of Okhotsk, is associated with the development of intense mean high pressure cells over western North America while zonal flow is associated with a more eastward location of the mean low over the Gulf of Alaska. Significant spatial correlations exist between the strength of the zonal component of the geostrophic wind over the Pacific Ocean and the zonal component of the polar and subtropical easterlies over the Pacific sector. The NPO modes are associated with large regional variations in air temperature and precipitation over North America, sea surface temperatures in the North Pacific, and Bering Sea ice. The NPO is found to resemble the second eigenvector of January and winter sea level pressure anomalies. In contrast to its more frequently occurring counterpart, the North Atlantic Oscillation, the NPO is not clearly associated with hemispheric mean temperature trends and its modes occur randomly with time. The two oscillations represent separate patterns of teleconnections of sea level pressure and zonal geostrophic winds over the Northern Hemisphere.

A Model of Corporate Performance as a Function of Environmental, Organizational, and Leadership Influences

Abstract: In a model of corporate performance incorporating environmental, organizational, and leadership variables, three performance dimensions—profit, profitability, and stock price—are examined for a sam...

Vascular endothelial morphology as an indicator of the pattern of blood flow.

Abstract: A quantitative study of the en face size and shape of endothelial cells from aortic intercostal ostia has been carried out in rabbits. Photomicrographs were taken from vascular casts of the rabbit aorta and the endothelial cell outlines were analyzed quantitatively using a digitizer and digital computer. The morphology of the endothelial cells was described using 8 calculated parameters (area, perimeter, length, width, angle of orientation, width: length ratio, axis-intersection ratio and shape index). Marked changes in cell morphology were found in the regions proximal and distal to ostia as well as around flow dividers. Cells on the aorta are aligned with the flow direction, and the endothelial cells within the ostia have an angle of orientation of approximately 45 deg to the axis of the vessel. The results obtained to date suggest that endothelial cell morphology and orientation around a branch vessel may be a natural marker or indicator of the detailed features of blood flow.

Robust Rank Procedures for the Behrens-Fisher Problem

Abstract: The problem of testing for equality of the medians of two populations is considered. The standard distribution-free tests for this problem require that the two populations have the same shape to maintain their nominal significance level under the null hypothesis. A method is given to modify many of these tests so they can be used to test for equality of the medians with fewer assumptions on the shapes of the two populations. The method is demonstrated using the Mann-Whitney-Wilcoxon statistic.

Interaction Involvement: A Cognitive Dimension of Communicative Competence.

Abstract: A perspective is presented on communicative competence that is based on Erving Goffman's model of face‐to‐face society. The concept o£ interaction involvement is then explicated in relation to the model as a fundamentally important cognitive dimension of communicative competence. Data from two studies are reported to support the validity of the interaction involvement concept and its operational definition. The results are interpreted as being useful for future basic research on communicative competence as well as applications in classroom and other instructional settings.

Statistical Power and Effect Size in Marketing Research

Abstract: Statistical power and effect size are not considered sufficiently by marketing researchers. The authors discuss how better attention to these two factors can improve the planning, execution, and re...

Critical Behavior of the Dielectric Constant of a Random Composite near the Percolation Threshold

Abstract: Measurements are reported of a singularity in the dielectric constant of a random metal-insulator composite below the percolation threshold. The composite sample consists of small silver particles randomly dispersed throughout a KCl matrix. The dielectric constant is found to obey a scaling relation with a critical exponent of $s=0.73\ifmmode\pm\else\textpm\fi{}0.07$.

Control of Force Distribution in Robotic Mechanisms Containing Closed Kinematic Chains

Abstract: Control of the force distribution in locomotion and manipulation systems containing closed kinematic chains is an important problem since many tasks such as walking or grasping depend upon it. The basic problem is to solve for the input joint torques for a particular system trajectory and is usually underspecified. As such, linear programming has been used to obtain a solution which optimizes a weighted combination of energy consumption and load balancings. Inequality constraints on the maximum actuator torques and reaction forces at the tip of each chain of the system are imposed, in addition to equality constraints which specify movement in a desired system trajectory. An example is given in which the joint torques to drive a hexapod locomotion vehicle in a tripod gait are computed.

Kosterlitz-Thouless Transition in Proximity-Coupled Superconducting Arrays

Abstract: Evidence for the Kosterlitz-Thouless vortex unbinding transition is reported in triangular planar arrays of proximity-coupled Pb-Sn junctions. The temperature dependence of the resistive transition and the nonlinear features of the current-voltage characteristics are consistent with recent theories of topological ordering in two-dimensional superconductors.

Toughening of Glasses by Metallic Particles

Abstract: The role of elastic, thermoelastic, and interfacial properties in the toughening of a brittle matrix by metallic second-phase particles was studied. Two composites were studied: glass+partly oxidized Ni particles (thermal expansion coefficient of the glasses lower than, equal to, and higher than that of Ni) and glass+partly oxidized Al particles (thermal expansion and elastic moduli equal). Weak interfacial bonding between the nickel and its oxide and developed stress concentrations are the major toughness limitations found in the glass/Ni composites. When the thermal expansion coefficient and elastic modulus of the second phase are sufficiently greater than that of the glass matrix, a propagating crack will bypass the particles. When the thermal and elastic stresses are minimized and satisfactory bonding is achieved (glass/Al composites), a 60x toughness increase was realized.