Where lies the burden of proof?

Henry Garrett's comment on "The SPSSI and Racial Differences" (see record 2005-11891-003) can be more ably answered, I am sure, by those who have scientifically studied intelligence and racial differences. I am commenting as a psychologist who happens to be a Negro. Garrett's statement that "the fact of racial differences is so immediate and compelling to most people that the burden of proof is on those who claim equality--not the reverse" is very subjective and smacks of the attitude of the Herrenvolk. I question whether one can find "comparable" groups of Negroes and whites to evaluate in terms of intelligence as our present tests measure it in view of the decades of inequality of opportunity and the present nationwide operation of discrimination. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Where are the generators?

Organizational creativity is presented as four distinctly different sequential stages of a dynamic cognitive creative problem solving process: generation, conceptualization, optimization, and implementation. The generation stage is the activity that initiates the creative process. It is disruptive, because it entails proactively and deliberately seeking and discovering brand new problems and opportunities. Often called opportunity finding, generation results from restless discontent with the status quo. This activity is different from the second stage, conceptualization, which other researchers have previously described as problem construction, identification, or formulation. Such second stage activity gives definition to a newly discovered problem freshly emerging from the first stage or to a presented or otherwise already existing problem. We provide research showing that the people who prefer the generation stage activity (generators) are underrepresented in industrial and business organizations and are likely to be found in occupations normally found outside such organizations, for example, artists, writers, designers, teachers, and academic institutions. We argue that organizations seeking increased creativity and innovation could do so by understanding and recognizing the contributions made by people preferring the generator style, and by making generator activity more attractive for all members of the organization. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Where is a leak point detected by "the low flow leak test" of anesthetic machines?

"The low flow leak test" is recommended for pre-anesthetic inspection of anesthetic machines. We carried out anesthesia compression tests as a standard. Even in that case, often the low flow leak test does not meet the standard. We investigated the point where there is a leak in the anesthetic machine. Observing the leak that fluctuates each time there is detachment or attachment of the canister, the primary cause of the leak is thought to be related to the canister. It is important to carry out an inspection of the canister if the low flow leak test does not meet the standard.     

What is the character of research on leadership character?

This article examines the theories and research on character and leadership by the authors in the Special Issue on “Defining and Measuring Character in Leadership” (Thompson & Riggio, 2010). It explores the variety of definitions and frameworks and identifies similarities across them. We note that the dominant foundations of the frameworks are transformational leadership and positive psychology. This raises concerns that the models may be too narrowly constructed. On the other hand, important insights are offered in the special issue on the measurement of character in leadership. In addition, the articles offer some tentative interventions for promoting leadership character among managers. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Transplantation immunology: is the manipulation of the cytokine network therapeutically justified?

Classical allograft rejection is a cellular-mediated immune response in which the activation of the CD4+ T helper (Th) cell plays a crucial role. After activation the Th cell produces a variety of cytokines which are essential for initiating allograft rejection. Th cells can be distinguished by their cytokine profile. Th 1 cells produce IL-2 and IFN gamma, which are associated with rejection. Th2 cells are characterized by the production of IL-4 and IL-10, cytokines which are found in models when tolerance is induced. These findings are called the "Th1/Th2 paradigm" and lead to the following hypothesis: Th1 cells are responsible for allograft rejection and manipulation of the cytokine network towards a Th2 type cytokine pattern results in tolerance or delayed rejection. This study attempts to answer the question whether the Th1/Th2 paradigm is a pure association or corresponds to a mechanism which might be used therapeutically. Allograft rejection in the absence of the proinflammatory cytokines IL-2 and IFN gamma occurs almost unaltered. Moreover, supplying the anti-inflammatory cytokines IL-4 and IL-10 did not result in delayed rejection. Therefore, therapeutic manipulation of the very complex cytokine network will most likely fail. Blocking cytokine-independent T cell activation might be a better concept for induction of allograft tolerance.     

Clinical research: where does it come from? Where is it going?

In this editorial the author examines briefly the past, present and future of clinical investigation in general and particularly in Switzerland, where the same problems are encountered as in other European countries and North America. The main problems reside in the fragmentation of internal medicine into subspecialities with their own separate meetings and journals, at the expense of multidisciplinary sources of information on medical progress, thus widening the gap between the practitioners and the scientific community. Through examples, it is pointed out that the progression of medical knowledge follows the path from basic research in biochemistry, cellular biology, animal experiments, clinical investigation and finally clinical medicine not unidirectionally but bidirectionally. Thanks to the Swiss National Science Foundation, the Medical Schools of the five Universities and many private foundations, a considerable effort has been made in past decades to foster basic and clinical research, resulting in a most favorable position for our country on the international scene. There is a fear that political and administrative decision could jeopardize the present situation and imperil the future. Finally, citing Osler from his work "Aequanimitas", the author stresses that "the true test of a nation's life... is to be found in its intellectual and moral standards", and that "the measure of the value of a nation to the world is neither the bushel nor the barrel, but mind".     

What is the Effect of Critical Surface Tension of PbSO3 Thin Film?

This study focuses on the critical surface tension of lead sulfite (PbSO₃) crystalline thin film produced with chemical bath deposition on substrates (commercial glass).The PbSO₃ thin films were deposited at room temperature at different deposition times. The structural properties of the films were defined and examined according to X-ray diffraction (XRD) and the XRD results such as dislocation density, average grain size, and no. of crystallites per unit area. Atomic force microscopy was used to measure the film thickness and the surface properties. The critical surface tension of the PbSO₃ thin films was measured with an optical tensiometer instrument and calculated using the Zisman method. The results indicated that the critical surface tension of films changed in accordance with the average grain size and film thickness. The film thickness increased with deposition time and was inversely correlated with surface tension. The average grain size increased according to deposition time and was inversely correlated with surface tension.     

Transsaccadic representation of layout: What is the time course of boundary extension?

How rapidly does boundary extension occur? Across experiments, trials included a 3-scene sequence (325 ms/picture), masked interval, and repetition of 1 scene. The repetition was the same view or differed (more close-up or wide angle). Observers rated the repetition as same as, closer than, or more wide angle than the original view on a 5-point scale. Masked intervals were 100, 250, 625, or 1,000 ms in Experiment 1 and 42, 100, or 250 ms in Experiments 2 and 3. Boundary extension occurred in all cases: Identical views were rated as too "close-up," and distractor views elicited the rating asymmetry typical of boundary extension (wider angle distractors were rated as being more similar to the original than were closer up distractors). Most important, boundary extension was evident when only a 42-ms mask separated the original and test views. Experiments 1 and 3 included conditions eliciting a gaze shift prior to the rating test; this did not eliminate boundary extension. Results show that boundary extension is available soon enough and is robust enough to play an on-line role in view integration, perhaps supporting incorporation of views within a larger spatial framework. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

What is coded into memory in the absence of outcome feedback?

Although people often have to learn from environments with scarce and highly selective outcome feedback, the question of how nonfeedback trials are represented in memory and affect later performance has received little attention in models of learning and decision making. In this article, the authors use the generalized context model (Nosofsky, 1986) as a vehicle to test contrasting hypotheses about the coding of nonfeedback trials. Data across 3 experiments with selective decision-contingent and selective outcome-contingent feedback provide support for the hypothesis of constructivist coding (Elwin, Juslin, Olsson, & Enkvist, 2007), according to which the outcomes on nonfeedback trials are coded with the most likely outcome, as inferred by the individual. The relation to sampling-based approaches to judgment, and the adaptive significance of constructivist coding, are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

How old is too old? Age and the sociology of fertility

Are we due for a new baby boom as couples who had postponed childbearing begin to make up for lost time? Analysis of National Fertility Study data suggest that "later means fewer"--quite apart from the declining fecundity that occurs at older ages. Couples who delay having children until relatively late in life are subject to fewer pressures to have children (or more children) even as the reasons not to begin (or increase) their families become more salient.     

Metacognitive control over the distribution of practice: When is spacing preferred?

The authors clarify the source of a conflict between previous findings related to metacognitive control over the distribution of practice. In a study by L. Son (2004), learners were initially presented pairs of Graduate Record Examination (GRE) vocabulary words and their common synonyms for 1 s, after which they chose to study the pair again immediately (massed practice), later (spaced practice), or not at all (done). Learners chose spaced practice less as pair difficulty increased. A. S. Benjamin and R. D. Bird (2006), using different materials and procedures and a longer presentation duration (5 s), concluded just the opposite. The authors adopted Son’s materials and procedures and replicated her findings with a 1-s stimulus duration. However, the declining choice of spacing as item difficulty increased largely reflected learners’ failure to fully perceive items with brief presentations. With longer presentations, ensuring full perception, the choice of spaced practice increased with greater pair difficulty, in agreement with Benjamin and Bird. Theoretical implications are discussed in the context of discrepancy-reduction and proximal-learning perspectives. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Which form of dopamine is the substrate for the human dopamine transporter: the cationic or the uncharged species?

The question of which is the active form of dopamine for the neuronal dopamine transporter is addressed in HEK-293 cells expressing the human dopamine transporter. The Km value for [3H]dopamine uptake fell sharply when the pH was increased from 6.0 to 7.4 and then changed less between pH 7.4 and 8.2. The KI for dopamine in inhibiting the cocaine analog [3H]2beta-carbomethoxy-3beta-(4-fluorophenyl)tropane binding displayed an identical pH dependence, suggesting that changes in uptake result from changes in dopamine recognition. Dopamine can exist in the anionic, neutral, cationic, or zwitterionic form, and the contribution of each form was calculated. The contribution of the anion is extremely low (相似文献   

What is the source of the Fullerton-Cattell "principle"?

Points out that there is no basis for the common tendency of writers on psychophysics to attribute the statement "Equally often noticed differences are equal unless always or never noticed" to G. S. Fullerton and J. M. Cattell (1892). No such statement appears in their monograph and its spirit seems contrary to their work's goals. The 1st attribution of the statement to Fullerton and Cattell appears to have been made by L. L. Thurstone (1932). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Whose fault is it? People's own conceptions of the reasons for health inequalities

How do people themselves think about inequalities in health? The topic has rarely been investigated, and oblique evidence has to be drawn from research on general lay ideas about health and the causes of illness. Data from a large British survey are combined with a review of the extensive body of, more usually, qualitative research on attitudes to health in Western industrialised societies. One tentative conclusion is that social inequality in health is not a topic which is very prominent in lay presentations, and paradoxically this is especially true among those who are most likely to be exposed to disadvantaging environments. Possible explanations are offered in terms of the effects of widespread "health promotion" activities, and the way in which lay theorising incorporates relationships between the group and the individual. The methods used in asking people to talk about health are also relevant: accounts of health and illness are accounts of social identity, and it is unreasonable to expect people to devalue that identity by labelling their own "inequality".     

But is it good for the psychologists? Appraisal and status of DSM-III.

Presents a critical analysis of the 3rd edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-III). Improvements over DSM-II are acknowledged; it is suggested, however, that problems with larger issues (e.g., multiaxial, diagnosis, operational criteria, and the medical model) overshadow these positive features. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Where lies social responsibility?

L. Krasner's article, "Behavior Control and Social Responsibility" (see record 1963-00116-001) bypassed several points of view which might clarify some of the issues discussed, and at the same time tone down what seems to be an exaggerated claim for urgency in dealing with problems of social responsibility. In the matter of considering moral and ethical issues, it is important to proceed with calmness and careful consideration rather than to become overly excited about finding the "right" solution. Even the "psychologist-researcher" is human and when he turns his hand to such things as communicating to the lay public he may fall into the pattern of the "sensationalists and popularizers," though obviously not so crudely. First among three basic questions and answers presented by Krasner is that concerning whether or not human behavior is controllable. His answer is to the effect that there is overwhelming experimental evidence that human behavior is controllable. Such a statement seems exaggerated in the face of other evidence from both experimental and clinical impressions. Krasner states that there is a "subtle but important" difference between the "psychology of behavior control" and the science of psychology. There are several objections to some of Krasner's implications that the behavioral scientist is not or at least is less bound by an ethical and moral system. There seem to be no logical grounds for distinguishing in principle between an ethics for behavioral scientists and an ethics for behavior controllers. The atomic scientists produced a bomb as scientists employed by their government while at war. They did their job effectively. As informed private citizens they held some moral reservations as to the consequences of their scientific endeavors. The behavioral scientist and the behavior controller can also perform their professional tasks dispassionately and efficiently, but as people they might well look to the ethical and moral issues involved. They can choose to take appropriate ethical and moral action as private citizens who have the advantages of specialized knowledge. The behavioral scientist and the behavior controller are not to be compartmentalized into a patchwork of separate roles, rather they are to see themselves as integrated individuals functioning in various ways which on occasion may bring about a conflict in ethical and moral values. Then they should be enabled to resolve the conflicts for themselves on a rational basis. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

What is the shelf life of a test? The effect of time on the psychometrics of a cognitive ability test battery.

The psychometric stability of the Armed Services Vocational Aptitude Battery was studied with data collected at 5 points over a 16-year period using item response theory (IRT) methods. Although 25 of the 200 items changed significantly over the years across 3 different gender-ethnic groups (i.e., White men, White women, and Black men), the overall characteristics of the tests were not severely affected by item-level changes. Items from tests that were more semantically laden were found to be more susceptible to the effects of time compared with those that focused on skills and principles. The findings are discussed in the context of the effects of time on the effectiveness of psychological measures. A call is made to test developers and test users to pay attention to the shelf life of their tests. The use of IRT methods for studying the effects of time on psychometrics is also discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

What is the best method of surgical training?: A report of America's leading senior surgeons

OBJECTIVES: To characterize the career choices and developments made by leading senior surgeons in this country and to examine hypothetically whether application of a short tracking program would have hindered their career decisions. DESIGN: A survey pertaining to each surgeon's career, decisions, and opinions concerning surgical training. SETTING AND PARTICIPANTS: Senior surgeons of regional and national surgical societies. MAIN OUTCOME MEASURE: Survey responses. RESULTS: A total of 352 surveys (41.4%) were received. Respondents answered that the most common reasons for choosing a specialty were role models or mentors (56%), research (51%), and available patient population (23%). The 2 most common stages in a career at which the respondents became interested in a specialty, or an area of expertise, were at the junior residency level (when the specialty was chosen) and at the assistant professor level (when a more specific topic within the specialty was chosen). The most common stage at which the group believed they acquired their expertise was also at the assistant professor level. Seventy-one percent of respondents believed broad training was superior to a short tracking system, although none had participated in shortened surgical training. CONCLUSIONS: Most leading senior surgeons in this country still believe that broad surgical training is superior and should be maintained. Because career specialties in this surveyed group were generally chosen in early residency, a hypothetical application of the short tracking system would have still allowed for these important decisions to be made. Also, it seems likely that specialty and career development would not have been hindered because "expertization" mostly occurred after training was completed. Regardless of training method, a role model or mentor seems most important in career choices and developments.