Public policy and the sale of human organs

Gill and Sade, in the preceding article in this issue of the Kennedy Institute of Ethics Journal, argue that living individuals should be free from legal constraints against selling their organs. The present commentary responds to several of their claims. It explains why an analogy between kidneys and blood fails; why, as a matter of public policy, we prohibit the sale of human solid organs, yet allow the sale of blood; and why their attack on Kant's putative argument against the sale of human body parts is misplaced. Finally, it rejects the claim that the state is entitled to interfere with the actions of individuals only if such actions would harm others. We draw certain lines grounded in what Rawls has termed "public reason" beyond which we do not give effect to the autonomous self-regarding decisions of individuals. Public resistance to the sale of human body parts, no matter how voluntary or well informed, is grounded in the conviction that such a practice would diminish human dignity and our sense of solidarity. A system of organ donation, in contrast, conveys our respect for persons and honors our common humanity.     

A Model‐Based Cluster Analysis of Maternal Emotion Regulation and Relations to Parenting Behavior

In a diverse community sample of mothers (N = 108) and their preschool‐aged children (M_age = 3.50 years), this study conducted person‐oriented analyses of maternal emotion regulation (ER) based on a multimethod assessment incorporating physiological, observational, and self‐report indicators. A model‐based cluster analysis was applied to five indicators of maternal ER: maternal self‐report, observed negative affect in a parent–child interaction, baseline respiratory sinus arrhythmia (RSA), and RSA suppression across two laboratory tasks. Model‐based cluster analyses revealed four maternal ER profiles, including a group of mothers with average ER functioning, characterized by socioeconomic advantage and more positive parenting behavior. A dysregulated cluster demonstrated the greatest challenges with parenting and dyadic interactions. Two clusters of intermediate dysregulation were also identified. Implications for assessment and applications to parenting interventions are discussed.     

Perceptions of cotherapists as a function of therapist sex roles and observer sex roles

These two studies examined how therapist sex-role behaviors and subject sex roles influence perceptions of cotherapists conducting marital therapy. As hypothesized, ratings of therapist competence, strength, and impact varied directly with verbal dominance. Contrary to expectations, this effect was not stronger for female therapists than for male therapists. However, verbally dominant females were seen as less in charge than verbally dominant males. Reversal of traditional instrumental and expressive sex-role styles was more salient for male therapists than for females. Nontraditional therapist sex-role styles were seen as providing a greater learning experience than traditional styles. As predicted, androgynous subjects rated male and female therapists equal in competence and strength, and were equally comfortable with each. Sex-typed males and females demonstrated a preference for the female therapist, rating her higher in competence and strength. These studies suggest that cotherapists' attention to the models they present should encompass sex-role behaviors and styles.An earlier draft of this article was presented as a paper at the annual meeting of the American Psychological Association, Toronto, August 1978.     

Early effects of neighborhood density and phonotactic probability of spoken words on event-related potentials

All current models of spoken word recognition propose that sound-based representations of spoken words compete with, or inhibit, one another during recognition. In addition, certain models propose that higher probability sublexical units facilitate recognition under certain circumstances. Two experiments were conducted examining ERPs to spoken words and nonwords simultaneously varying in phonotactic probability and neighborhood density. Results showed that the amplitude of the P2 potential was greater for high probability-density words and nonwords, suggesting an early inhibitory effect of neighborhood density. In order to closely examine the role of phonotactic probability, effects of initial phoneme frequency were also examined. The latency of the P2 potential was shorter for words with high initial-consonant probability, suggesting a facilitative effect of phonotactic probability. The current results are consistent with findings from previous studies using reaction time and eye-tracking paradigms and provide new insights into the time-course of lexical and sublexical activation and competition.     

Integrating Impairments in Reaction Time and Executive Function Using a Diffusion Model Framework

Using Ratcliff’s diffusion model and ex-Gaussian decomposition, we directly evaluate the role individual differences in reaction time (RT) distribution components play in the prediction of inhibitory control and working memory (WM) capacity in children with and without ADHD. Children with (n?=?91, $ \overline{\mathrm{x}} $ age?=?10.2 years, 67 % male) and without ADHD (n?=?62, $ \overline{\mathrm{x}} $ age?=?10.6 years, 46 % male) completed four tasks of WM and a stop signal reaction time (SSRT) task. Children with ADHD had smaller WM capacities and less efficient inhibitory control. Diffusion model analyses revealed that children with ADHD had slower drift rates (v) and faster non-decision times (Ter), but there were no group differences in boundary separations (a). Similarly, using an ex-Gaussian approach, children with ADHD had larger τ values than non-ADHD controls, but did not differ in μ or σ distribution components. Drift rate mediated the association between ADHD status and performance on both inhibitory control and WM capacity. τ also mediated the ADHD-executive function impairment associations; however, models were a poorer fit to the data. Impaired performance on RT and executive functioning tasks has long been associated with childhood ADHD. Both are believed to be important cognitive mechanisms to the disorder. We demonstrate here that drift rate, or the speed at which information accumulates towards a decision, is able to explain both.     

A COGNITIVE ANTHROPOLOGICAL PERSPECTIVE ON FIRST-GRADERS' CLASSIFICATIONS OF PICTURE

From the theoretical framework of cognitive anthropology based on the work of Charles Frake, this study explored children's classification systems underlying their interactions with illustrated picture storybooks in a classroom context. As a classroom participant-observer, the researcher carried out a classification task where children in a culturally diverse first-grade classroom sorted 15 picture books into piles of books having similar characteristics. It was found that the children classified books by topic, genre, author, culture, emotional response, and physical property of the book. The children's responses were placed in the context of the classroom setting. Some aspects of the children's classification systems were found to be similar to the teacher's way of categorizing books in the classroom library and also her way of classifying books in a book sorting activity.     

Preschoolers' Acquisition of Scientific Vocabulary Through Repeated Read-Aloud Events,Retellings, and Hands-On Science Activities

This study explored 3- and 4-year-old children's development of scientific vocabulary from participation in repeated interactive read-aloud events and retellings of three informational picture books about light and color, followed by hands-on science activities. Thirty-two children attending a YWCA preschool were matched by age and general vocabulary knowledge and randomly assigned to a retelling or no retelling condition. Repeated measures ANOVA of pretest and posttest scores on a free recall target vocabulary test revealed significantly higher scores for 4-year-olds, those with higher vocabulary knowledge, and those who retold the books. Children used significantly more target words across the three retellings.     

Modeling Coordination in Multiple Simultaneous Latent Change Scores

Coordination is a taxonomy of how processes change together through time. It depicts the changes of 2 or more variables in terms of the strength and consistency of their covariation, the directionality of their covariation (i.e., do increases in 1 variable correspond with increases [in-phase] or decreases [anti-phase] in the other variable), and the timing of their covariation (i.e., do both variables change at the same rate or does 1 variable change faster than the other). Current methods are able to characterize some, but not all, of these aspects of coordination and provide incomplete information as a result. This study addresses this limitation by demonstrating that multivariate Latent Change Score models can be used to fully differentiate all possible coordination patterns. Furthermore, one can then expand coordination beyond the 2-outcome case to test arrangements of underlying coordination mechanisms or patterns. Examples using 2 simultaneous Latent Change Score models and 4 simultaneous Latent Change Score models illustrate this approach within the context of adolescents and parents regulating Type 1 diabetes.