Defining the Subject of Consent in DNA Research

The advent of population-specific genomic research has prompted calls for invention of informed consent protocols that would treat entire social groups as research subjects as well as endow such groups with authority as agents of consent. Critics of such an unconventional ethical norm of “group consent” fear the rhetorical effects of approaching social groups with offers to participate in dialogues about informed consent. Addressing a specific population as the collective subject of genomic research, on this logic, adds currency to the potentially dangerous public opinion that such a group is bound by genetic ties. The paper considers the problem of group and individual identity within the rhetorical dynamics of the discourse and politics of consent.     

Demonstrations of a generation effect in context memory

Generation often leads to increased memorability within a laboratory context (see, e.g., Slamecka & Graf, 1978). Of interest in the present study is whether the benefits of generation extend beyond item memory to context memory. To investigate this question, in three experiments, we asked subjects to remember in which of two contexts they had read or generated words. In Experiment 1, the contexts were two different rooms; in Experiment 2A, the contexts were two different computer screens; in Experiment 2B, the contexts were different perceptual characteristics of the to-be-remembered words. In all experiments, subjects were better at remembering the context of generated words than of read words.     

A pediatric screening instrument to detect problematic infant–parent interactions: Initial reliability and validity in a sample of high‐ and low‐risk infants

The purpose of this study was to determine the initial reliability and validity of a screening instrument developed to detect problematic interactions between infants and parents as part of a pediatric well‐baby exam. Participants included 117 infant–mother dyads (57 preterms and 60 full terms) assessed when infants were 6 to 9 months old. Mothers and infants were observed playing an interactional game such as peek‐a‐boo during the course of the pediatric exam. The game was scored for degree of interactional reciprocity using the Pediatric Infant Parent Exam (PIPE). Acceptable levels of interrater reliability were achieved. As predicted, higher risk infants and their mothers exhibited more problematic interactions than lower risk infants and their mothers. Results indicated that the PIPE was a reliable means of screening for interactional difficulties, that was sensitive to, but not synonymous with, neonatal health indices. ©2001 Michigan Association for Infant Mental Health.     

The Ecological Validity of Delay Aversion and Response Inhibition as Measures of Impulsivity in AD/HD: A Supplement to the NIMH Multimodal Treatment Study of AD/HD

Impulsivity is a primary symptom of the combined type of Attention Deficit/Hyperactivity Disorder (AD/HD). The Stop Signal Paradigm is premised upon a primary deficit in inhibitory control in AD/HD, whereas the Delay Aversion Hypothesis, by contrast, conceptualizes impulsivity in AD/HD, not as an inability to inhibit a response, but rather as a choice to avoid delay. This study compared the ecological validity of the Stop Signal Task (SST) and Choice-Delay Task (C-DT) measure of delay aversion, with respect to their relative utility in discriminating AD/HD children from normal control participants, and their correlations with classroom observations and with ratings of impulsivity and other core AD/HD symptoms on the Conners and SNAP-IV checklists. The tasks exhibited modest discriminant validity when used individually and excellent discriminant validity when used in combination. The C-DT correlated with teacher ratings of impulsivity, hyperactivity, and conduct problems, and with observations of gross motor activity, physical aggression, and an AD/HD composite score. The SST correlated with the observations only. These results suggest that delay aversion is associated with a broad range of AD/HD characteristics whereas inhibitory failure seems to tap a more discrete dimension of executive control     

Developmental reversal in classification accuracy due to an increase with age in orientation-free judgments.

A complete developmental reversal in accuracy was obtained in Experiment I in which third graders, sixth graders, and adults judged the class membership of patterns presented in a same-different task. An examination of the task requirements and pattern classes employed led to the hypothesis that the reversal in accuracy resulted from an increase with age in orientation-free judgments. The results of Experiment II, in which adults were told to not rotate the patterns, and Experiment III, which was a replication of Experiment I using symmetric rather than areally skewed pattern classes, provided confirmation for that hypothesis.