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At least 379 records · Page 21Linked to original sources
PubMed2005

Reconstruing the "reconstruction" of psychopathy: a comment on Cooke, Michie, Hart, and Clark.

In this comment we highlight critical problems in the estimation of parameters for their hierarchical three-factor model of psychopathy, as assessed with the Hare Psychopathy Checklist, and their interpretation of these factors as causally related to socially deviant behavior. We argue that there is nothing "causal" about a model in which cross-sectional data are used to assert that antisocial tendencies are consequences of other more fundamental psychopathic traits. We present an equally viable model, based on the PCL-R four-factor solution, in which antisocial tendencies play a fundamental role in the construct of psychopathy, consistent with previous research and clinical tradition.

Adolescent↗
PubMed2003

Supernumerary phantoms: a comment on Grossi, et al.'s (2002) spare thoughts on spare limbs.

A recently published case report of a supernumerary phantom limb in a man with left-sided hemiplegia did not take note that this phenomenon has been extensively documented in the neurological literature for well over 100 years. The present comment provides a brief introduction to the clinical and experimental approaches to supernumerary phantom limbs. It also emphasizes the theoretical importance of this condition for understanding the neurological mechanisms subserving the experience of having a body.

Hallucinations↗
PubMed2000

Categorization of videogames: some comments on 'Children and electronic games' by Funk, et al.

Comments are made on an article by Funk, et al. about children and electronic games. This author argues the cross-cultural differences and developmental effects must be taken into account and that the categorization system of videogames based on content is incomplete or too general to cover the complex actions of contemporary videogames. These factors alone may have implications for research.

Adolescent↗
PubMed2004

Reaction to "Comments on 'The effects of leader-member exchange and differential treatment on work unit commitment': distinguishing between neutralizing and moderating effects".

Ye and Barbuto in 2004 made a number of interesting observations about use in 2002 by Van Breukelen, Konst, and Van der Vlist of the term 'neutralizer'. They advised caution when employing the term 'neutralizer', preferring instead the designation 'moderator'. Their comments underscore the importance of discussion on the nature of interaction effects in studies of leadership. Here we clarify our procedures in more detail and present the results of further analyses of our data.

Communication↗
PubMed2005

Comment on McCall, Trombetta, and Gipe's 2004 proposed impression management explanation for the credit card effect.

There is a dearth of empirically supported theoretical explanation since its introduction; Feinberg's 1986 credit card effect showed greater product valuations and donation intentions by experimental participants when asked to make such estimates in the presence of credit card stimuli. This comment on McCall, Trombetta, and Gipe (2004) notes potential flaws and adjudged over-interpretation of results in their attempt to replicate successfully and derive theoretical explanation for the credit card effect.

Altruism↗
PubMed2005

Sample homogeneity and coefficient alpha: comment on MJI and Alkhateeb's reliability generalization study and a theoretical clarification.

Reliability generalization studies are increasingly frequently reported in the literature, including Mji and Alkhateeb's 2005 study of the Conceptions of Mathematics Questionnaire. The present article comments on an issue of reliability generalization as used in that study and clarifies a theoretical point regarding the meaning of coefficient alpha and what data features tend to influence it as a measure of score reliability.

Generalization, Psychological↗
PubMed1996

What determines the detection of changes in motion velocity? A comment on Dzhafarov, Sekuler, and Allik (1993)

We comment on a recent model aimed at explaining data on speed of reaction to motion onset and to changes in motion velocity. The model is based on calculating the running variance of the stimulus positions passed during the motion. We show that although the model is successful in explaining data on motion onset and suprathreshold velocity changes, it may not be able to explain data on time of reaction to changes in velocity when these are near the detection threshold.

Acceleration↗
PubMed2003

Intrahemispherical activation, visuomotor transmission, and the Simon effect: comment on Wascher et al. (2001).

On the basis of 3 experiments E. Wascher, U. Schatz, T. Kuder, and R. Verleger (2001) concluded, "The variety of tasks subsumed under the term Simon effect turned out to be heterogeneous" (p. 749). This comment critically evaluates the validity of their conclusion by considering their hypotheses methodology, specific conclusions, and proposed broader implications. Although the Simon effect is a behavioral phenomenon, E. Wascher et al. relied heavily on physiology in hypothesis generation, methodology, and interpretation of results. Moreover, methodological differences from most previous studies, combined with limited statistical support, nonreplication of previously reported behavioral phenomena inconsistencies in results across experiments, and evidence against a contribution of intrahemispherical activation by visuomotor pathways, strongly suggest that their conclusion should be viewed with caution.

Acoustic Stimulation↗
PubMed1985

Comment on "Religiosity and United States suicide rates, 1972-1978".

This article comments on the Martin article on religiosity and suicide rates in the United States. Specifically, it is pointed out by the present author that Martin's data do not allow him to draw the conclusions that he offered in his article. A correlational study does not allow for cause and effect conclusions, and the use of group data precludes conclusions about individual cases.

Female↗
PubMed1978

Community control in a Gesellschaft world: a comment.

This comment discusses Nassi's analysis in terms of culture conflict as discussed by Earl Johnson (1977). Johnson's analysis, which examines gemeinschaft to gesellschaft societal changes resulting from industrialization provides a wholistic, evolutionary view of changing modes of community control. It is concluded that Johnson's analysis offers a more radical perspective than Nassi's because it deals not merely with power and economic relations, but also with fundamental values which transcend generations and singular societies.

Community Mental Health Services↗
PubMed1995

Comment on "designing EMF experiments: what is required to characterize 'exposure'?".

Dr. Peter Valberg has written an excellent and clear paper describing our current understanding of the many facets of characterizing exposure to extremely-low-frequency (ELF) electric and magnetic fields. Dr. Valberg has directed his paper to the characterization of exposures used in laboratory experimentation. In this context, it seems to me that Valberg's program of exposure characterization can be accomplished with currently available instrumentation and with relatively modest effort. Thus, I have no fundamental problems with his recommendations and, really, have only a few minor comments to make. However, if one argues that Valberg's recommendations should be extended to the characterization of exposure in epidemiological research, I have serious reservations, which I will mention briefly at the end of this commentary.

Animals↗
PubMed1979

Ejection fraction derived by M-mode echocardiography: a table and comments.

Left ventricular ejection fraction is frequently quantitated by M-mode echocardiography despite limitations, including 1) the ability to measure an accurate left ventricular short axis, 2) the mathematic and geometric assumptions used to derive the volumes from which the ejection fraction is calculated, and 3) the lack of applicability to asynergic ventricles. Nevertheless, using a cubed function or correction formula, ejection fraction can be calculated for symmetrically contracting, normally sized, and enlarged left ventricles. A table and accompanying comments are presented.

Diastole↗
PubMed1986

A comment on "A method to measure the duration of DNA synthesis and the potential doubling time from a single sample".

Recently a method was introduced by Begg et al. (Cytometry 6:620-626, 1985) for the calculation of the DNA synthesis time, TS using flow cytometry to monitor the progression of cells that have been pulse-labeled by bromodeoxyuridine (BrdUrd). Ideally, the method uses only a single two-parameter histogram of the progressed cells to obtain TS. The essence of the method is to be able to obtain an initial point from general principles, draw a line through it and the measured point, and extrapolate to a level of progression that would be attained when the time is equal to TS. In this comment, explicit values are derived for the initial point and the progression of cells based on kinetic arguments, and a new method is presented for estimating TS. This new method is compared to earlier methods, and the effects of a finite labeling time and variation in the transit times are considered. Finally, an equation is developed for estimating TS following multiple measurements.

Cell Cycle↗
PubMed1992

Salivatory responses to classical and nontraditional parasympatholytic agents in human subjects: critical comments.

Both classical (atropine, scopolamine) and nontraditional (pirenzepine, telenzepine) cholinolytic agents themselves cause no salivation in human subjects. Ordinarily, they block salivation caused by pilocarpine. Conversely, they all stimulate intense salivatory response in the chronically denervated human parotid gland. The author presents critical comments on the concept that cholinolytic agents cause salivation by suppression of the mechanism of presynaptic autoinhibition. An alternative explanation of the initial cholinomimetic effect of cholinolytic agents is suggested.

Adolescent↗