Oddities in Kirkpatrick, et al.'s study of children of lesbian mothers

Kirkpatrick, et al.'s 1976 study of what happened to 20 lesbians' children has received considerable attention, apparently later being matched with 20 heterosexuals' children. In 2004, Kirkpatrick generally acknowledged Schumm's caution that her findings are less impressive than are needed, yet, Kirkpatrick stated her "early findings have been reinforced" and that "no evidence of differences in the children grouped by the mother's sexual orientation" have been documented by subsequent research. Close examination of the data of these studies indicates that children from 13 lesbian mothers were compared with children from 13 divorced heterosexuals. Further, there are contradictions between the published reports regarding the nature of samples and various findings. Analysis of Kirkpatrick, et al.'s study suggests that children do less well when raised by homosexual parents.     

When Validity Testing Lacks Validity: Comment on Levine et al.

The death of self‐construal research has been greatly exaggerated. Levine et al. (2003) highlight the alleged methodological limitations of the current body of the self‐construal model of culture. Their allegations, whether true or not, require a fair investigation. Careful examination of Levine et al. reveals pervasive logical flaws, methodological errors, and interpretation biases, which stem from ethnic stereotyping and other erroneous assumptions at various junctures. These fundamental errors, in turn, render their conclusions untenable. In testing their 1st set of hypotheses, which they proclaim to be “central to the validity” of self‐construal scales, Levine et al. bifurcate the participants into “Westerners” versus “Asians,” and then impose their a priori stereotype of how Westerners ought to be versus how Asians ought to be, which is scientifically unacceptable. This is an unscientific validation criterion (comparable to crude ethnic stereotypes such as “Asians are smarter”) and should not be used to judge the scales' validity. Next, in their discussion of priming, Levine et al. assert that the construct validity of the interdependent self‐construal requires that it must be susceptible to priming. This is an elementary logical fallacy. It simply does not follow from the definition of the interdependent self‐construal and therefore cannot be used as a criterion which reflects on construct validity. Their priming experiments are also deeply flawed by the unrepresentative sample of participants. Further, in their factor analyses, Levine et al. set up the “straw man” of a “universal a priori 2‐factor solution” although no self‐construal scholar or theory insists that there are precisely 2 universally applicable self‐construals or that the current self‐construal scales are perfect. The results of statistical analyses, such as those in Levine et al., crucially depend on the selection of presuppositions. Levine et al.'s presuppositions are untenable, yet they are passed off as self‐evident criteria for validity testing. Their article tries to create an illusion of finality, but is pervasively and fundamentally flawed.     

Mutual Suppression: Comment on Paulhus et al. (2004)

Paulhus, Robins, Trzesniewski, and Tracy (Multivariate Behavioral Research, 2004 Paulhus, D. L., Robins, R. W., Trzesniewski, K. H. and Tracy, J. L. 2004. Two replicable suppressor situations in personality research. Multivariate Behavioral Research, 39: 303–328. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar], 39, 305–328) suggested that the three types of two-predictor suppression situations—classical suppression, cooperative suppression, and net suppression—-can all be considered special cases of mutual suppression, in that the magnitude of each of the two standardized partial regression coefficients exceeds the magnitude of its corresponding standardized bivariate regression coefficient. Classical suppression and cooperative suppression can be considered mutual suppression, but net suppression cannot. Hypothetical and empirical examples of net suppression in which the magnitude of the standardized partial regression coefficient for the suppressor variable is greater than, equal to, and less than the magnitude of its standardized bivariate regression coefficient are provided. The empirical examples were drawn from the social psychology literature relating psychological well-being outcomes to life aspirations.     

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.     

Response to Lynn, et al.'s "Evaluation of Woodard's theory of perceptually oriented hypnosis"

In this article some misunderstandings of Perceptually Oriented Hypnosis presented in the recent evaluation by Lynn, et al. are pointed out. Perceptually Oriented Hypnosis emphasizes individual differences naturally occurring in the experience of everyday life or being-in-the-world and differentiation as major themes to understanding hypnosis. Woodard advocates that qualitative research enhances our understanding of hypnotic experiencing and allows us to examine hypnotic phenomena that elude the laboratory and control settings.     

An alternative perspective on von Winterfeldt et al.'s (1997) test of consequence monotonicity

D. von Winterfeldt, N.-K. Chung, R. D. Luce, and Y. Cho (1997) provided several tests for consequence monotonicity of choice or judgment, using certainty equivalents of gambles. The authors reaxiomatized consequence monotonicity in a probabilistic framework and reanalyzed von Winterfeldt et al.'s main experiment via a bootstrap method. Their application offers new insights into consequence monotonicity as well as into von Winterfeldt et al.'s 3 experimental paradigms: judged certainty equivalents (JCE), QUICKINDIFF, and parameter estimation by sequential testing (PEST). For QUICKINDIFF, the authors found no indication of violations of "random consequence monotonicity." This sharply contrasts the findings of von Winterfeldt et al., who concluded that axiom violations were the most pronounced under that procedure. The authors found potential evidence for violations in JCE and certainty equivalents derived from PEST.     

Critical Evaluation of Porter et al.'s Organizational Commitment Questionnaire: Implications for Researchers

Organizational commitment is a useful construct for understanding employee behavior. The Organizational Commitment Questionnaire (Porter et al. 1974) has been used extensively to operationalize this construct, but its dimensionality is unclear. The present work assesses the dimensionality of the OCQ using two sales force samples.     

Social Identity, System Justification, and Social Dominance: Commentary on Reicher, Jost et al., and Sidanius et al.

The articles by Reicher (2004 ), Jost, Banaji, and Nosek (2004 ), and Sidanius, Pratto, van Laar, and Levin (2004 ) discuss the strengths and weaknesses of social identity theory ( Tajfel & Turner, 1979 ), system justification theory ( Jost & Banaji, 1994 ), and social dominance theory ( Sidanius, 1993 ). The latter two theories grew out of a critique of social identity theory, but this critique relates more to deficiencies in social identity research than to deficiencies in the theory itself. More balanced and comprehensive social identity research is required in order to allow a fair assessment of the theory's limitations. In addition, Reicher (2004 ) and Huddy (2004 ) are correct that only social identity theory offers the potential for explaining social change and social stability.     

Test of Motowidlo et al.'s (1997) Theory of Individual Differences in Task and Contextual Performance

This article examines 20 key issues related to the sliding band method of candidate referral in personnel selection. It does so in a point-and-counter-point format. Its purpose is to facilitate consideration of relevant issues, to correct what we believe are misconceptions and misunderstandings of the technical, legal, and social implications of the method, and to allow us to state our position on these issues clearly. Some scientists and practitioners may choose not to use this approach, but at least their decisions should be based on a clear understanding of the logic and technical basis for it.