The effect of test schedules on the formation of linked perceptual classes

After training conditional discriminations among selected stimuli from two perceptual classes, the emergence of novel relations involving other members of both classes was assessed using cross-class probes. The cross-class probes were presented using one of four different testing schedules. In the 2/9 test, nine different probes were presented in each of two test blocks. In the 6/3 test, three different probes were presented in each of six test blocks. In the 18/1-RND test, each of the 18 cross-class probes was presented in separate test blocks. In the 2/9 and 6/3 tests, the cross-class probes were presented in a randomized order within test block. In the 18/1-RND test, the cross-class probes were presented in a randomized sequence. In the 18/1-PRGM test, however, the cross-class probes were presented in a programmed order (i.e., the values of the stimuli in each cross-class probe were changed systematically in the succession of probe presentations). About 55% of the linked perceptual classes emerged during the 2/9, 6/3, and 18/1-RND tests. Thus the number of different probes in a test block did not influence the emergence of classes as long as the probes were presented in a random order. Virtually all classes emerged during the 18/1-PRGM test. Thus at least one ordered introduction of different cross probes resulted in the reliable emergence of linked perceptual classes. Mechanisms responsible for linked perceptual class formation are discussed along with the relation of these classes to other complex categories.     

Hierarchical classes models for three-way three-mode binary data: interrelations and model selection

Several hierarchical classes models can be considered for the modeling of three-way three-mode binary data, including the INDCLAS model (Leenen, Van Mechelen, De Boeck, and Rosenberg, 1999), the Tucker3-HICLAS model (Ceulemans, Van Mechelen, and Leenen, 2003), the Tucker2-HICLAS model (Ceulemans and Van Mechelen, 2004), and the Tucker1-HICLAS model that is introduced in this paper. Two questions then may be raised: (1) how are these models interrelated, and (2) given a specific data set, which of these models should be selected, and in which rank? In the present paper, we deal with these questions by (1) showing that the distinct hierarchical classes models for three-way three-mode binary data can be organized into a partially ordered hierarchy, and (2) by presenting model selection strategies based on extensions of the well-known scree test and on the Akaike information criterion. The latter strategies are evaluated by means of an extensive simulation study and are illustrated with an application to interpersonal emotion data. Finally, the presented hierarchy and model selection strategies are related to corresponding work by Kiers (1991) for principal component models for three-way three-mode real-valued data.     

Clinically useful,research validated assessment of persons with alcohol problems

Advances in treatment approaches available for persons with alcohol problems, particularly the advent of cognitive behavioral and motivational approaches, have made systematic assessment of these problems more important than ever for clinicians. There is a plethora of assessment instruments available, and it is a difficult task for clinicians to conceptualize, select and use these instruments in a coherent fashion. Particularly important in this task is the identification of research validated instruments that provide both clinically useful and psychometrically sound data. This paper presents a model of alcohol assessment and reviews selected research validated instruments that can be assembled into an assessment battery that provides useful data to guide treatment of alcohol problems while also addressing practical concerns encountered by clinicians in practice.     

Contemplating an Evolutionary Approach to Entrepreneurship

This artical explores that application of evolutionary approaches to the study of entrepreneurship. It is argued an evolutionary theory of entrepreneurship must give as much concern to the foundations of evolutionary thought as it does the nature of entrepreneurship. The central point being that we must move beyond a debate or preference of the natural selection and adaptationist viewpoints. Only then can the interrelationships between individuals, firms, populations and the environments within which they interact be better appreciated.     

A Transdisciplinary Perspective Concerning the Origin of the Species: The Migratory Theory of Genetic Fitness

Although the Neo-Darwin Theory of Evolution is one of the most celebrated theories in science, nonetheless it has received many criticisms. These criticisms are documented and a new transdisciplinary theory of origin is introduced. Darwin's original argument was that natural selection, through heritable changes, changed simple organisms over time. These heritable changes are responsible for the complex plethora of life seen around us today. Darwin's original theory, however, was deconstructed after the fact into a mutation-based theory. This mutation-based theory in its current form is an insufficient and indeed unnecessary transdisciplinary explanation. A subsequent statistical comparison between the six extant scientifically based primary theories of origin was undertaken and based on current biological knowledge a statistically significantly (p < .05) best fit phenotypic model emerged.     

Chinese Corporate Social Responsibility by Multiple Objective Portfolio Selection and Genetic Algorithms

In this paper, we study corporate social responsibility (CSR) in China through the prism of investments. We work with large stocks and assess their CSR performance from agency CSR data. We formulate Chinese CSR by a multiple objective extension of a traditional portfolio selection model and analytically solve the extension. We also solve the extension by a genetic algorithm and directly evaluate the algorithm's performance against the analytical solution. The multiple objective formulation is tested by randomly choosing nondominated portfolios with out‐of‐sample data to identify nondominated portfolios that outperform the 1/n portfolio (equally weighted portfolio). Copyright © 2013 John Wiley & Sons, Ltd.     

Evolution by Natural Selection: Darwin's Gift to Science and Religion

The argument-from-design, based on biological evidence, was elaborated by William Paley in his Natural Theology (1802). It was revived in the 1990s by several authors, with a new moniker, the theory of intelligent design. In The Origin of Species (1859), Darwin advanced a scientific explanation of the design of organisms: evolution by natural selection. Organisms are pervaded by imperfections, dysfunctions, cruelties, and even sadism. The theory of evolution accounts for these mishaps, by natural selection, so that they need not be attributed to God's explicit design. The theory of evolution by natural selection is Darwin's gift to religion, in addition to its centrality in biology.     

Suitability and context for brief therapy

Abstract

The main point of this paper is that a client's suitability for brief or time-limited therapy is determined by various factors, including context. There is still agreement on the validity of Malan's selection criteria, which included ‘mild illness, recent onset, high motivation and response to trial interpretation’, yet many additional issues have since emerged and need to be considered. For instance, the counsellor's suitability, training and work experience, the counsellor's assessment skills and ability to establish a dynamic focus, the clients' capacity for self-reflection, their ego strength and their response to a trial therapy in the first session. Then there is the importance of the various contexts in which nowadays much brief counselling is offered free to clients, whether in education, at the workplace, in primary healthcare settings or by charitable organizations. This means that issues of money and markets have come to the fore and an initial differential assessment needs to be carried out in order to decide which method or model of therapy is best for the client. Matching the counsellor's personality to the needs and to the pathology of the client, and matching the treatment to the client's developmental stage or life stage crises are other aspects of the work, which determine the issue of suitability. In the end as always there is much that remains unknown about what works for whom and how the client's decision to take up help is made.     

Muscular Fatigue and the Learning and Performance of a Motor Control Task

Four groups of 12 female college students performed a pursuit-rotor task during learning under one of four conditions of exercising the muscles of the limb used in the task: (a) no muscular exercise, (b) low-fatiguing, (c) medium-fatiguing, and (d) high-fatiguing muscular exercise. All four groups were tested 48 hr later on the same pursuit-rotor task with no exercise interpolated between the ten 20-sec trials. Differences in the performances among the four groups were not statistically significant on either the first or the second day alone or when the data of the two days were combined. The data appear to support the hypothesis of an inverted-U or inverted-J model relating performance (and learning) to muscular fatigue in motor-control tasks.     

Interference Effects from Observed Movement in Parkinson's Disease

Previous research has demonstrated that Parkinson's disease patients have an increased susceptibility to response conflict. In the present study, the authors investigate whether Parkinson's patients have a similar sensitivity to interference from observed movements. In all, 10 patients and 10 controls performed horizontal and vertical arm movements while watching a video of either a person performing similar movements or a moving dot. Movements were performed in the same plane (congruent) and orthogonal to the observed movement (incongruent). The off-axis variance of movements was our index of interference. Although patients tended to exhibit more off-axis variability than did controls, both groups demonstrated similar congruence effects, with greater variance in incongruent conditions. These results indicated that increased susceptibility to interference in Parkinson's disease does not extend to interference from observed movements.