Individual and Group Decisions in Response to a Mock Trial: A Methodological Note1

An audiovisual slide-show presentation of a murder trial was used to examine the effects of group deliberations on juror's responses. Sex of defense attorney and race of defendant were systematically varied in the mock trial. Verdicts were assessed immediately following the trial presentation (before group deliberations) and immediately following group deliberations. Neither sex nor race significantly affected distributions of individual juror's predeliberation verdicts. Following group deliberations, however, an effect of attorney's sex emerged in both jury (group) verdicts and in individual, postdeliberation verdicts. Jurors in the male defense attorney conditions were more likely to vote not guilty following deliberations than were jurors in the female defense attorney conditions. This effect is discussed in terms of group shift.     

The role of reference in children's acquisition of a miniature artificial language

Nursery school children were presented with a simple miniature artificial language in one of three conditions. In the first, the stimuli to which the words referred contained an inherent lawful relationship and the language syntax reflected this relationship. In the second, the stimuli contained an inherent lawful relationship but the language syntax did not reflect this relationship. In the third, no lawful relationship existed among the stimuli to which the words referred so the language syntax imposed an arbitrary relationship among stimuli. Subjects in the first group were able to produce more correct utterances than those in the other two groups when the stimuli to which the words referred were not present, suggesting that some form of semantic mediation mechanism was being used. Evidence from novel constructions indicates that for both groups using stimuli containing an inherent lawful relation there were interactions between semantic learning mechanisms and syntax learning mechanisms.     

Professional service involvement of leadership faculty: An assessment of gender,role, and satisfaction

This study explored gender differences among educational administration faculty and their participation in and satisfaction with professional association activities. The study population would be characterized as overwhelmingly male and white, but with women and minority candidates beginning to enter the faculty ranks. Women faculty reported involvement in more professional service activities and a slightly higher satisfaction with their involvement than their male colleagues. However, women participated in different types of and more professional association activities than men.     

Diamond-winged variants of the Müller-Lyer figure: A test of Virsu’s (1971) centroid theory

Diamond-winged variants of the Müller-Lyer figure were used to test predictions of Virsu’s (1971) theory of the Müller-Lyer illusion based on efferent readiness for eye movements toward the figure’s center of gravity, A Müller-Lyer figure with diamond-shaped wings resulted in a greater center-of-gravity distance than the corresponding, conventional Müller-Lyer figure, but fin length and the rest of the figure remained constant; in Virsu’s study, fin length and center-of-gravity distance covaried. Results were consistent with Virsu’s data when we used the stimulus conditions that he reported. Results from a wider range of stimuli challenge Virsu’s theory, and thus are consistent with the conclusions of Brigell, Uhlarik, and Goldhorn (1977).     

The process of learning from small-scale maps

Two experiments are reported that test the general hypothesis that learning from a small scale map proceeds in a global to local fashion, structured by the spatial subdivisions present in the map. In Experiment 1, a fairly simple map depicting a single fictitious country containing provinces and cities was used as the to-be-learned stimulus. Evidence for a provincial to capital to city learning process was found, with map recall best when subjects used an imagery learning strategy. In Experiment 2, a more complex map containing multiple countries, with provincial and city elements present was used. The global to local learning process was replicated, as well as the beneficial effects of an imagery study strategy. Results are discussed in terms of progressive image differentiation and total information set size.     

Early and late selection in partial report: Evidence from degraded displays

In studies of iconic memory using the bar-probe task, subjects see a brief display of target letters and are probed by an arrow to report one of them. According to the classic early-selection account, subjects use the probe to select material for perceptual analysis from a precategorical (iconic) memory, but according to late-selection theories, subjects first identify the letters and then use the probe to select one letter for report from the set of categorized items. Pashler (1984) based his test for the locus of selection on a manipulation of display quality in previewed displays. He presented a target for 200 msec and then added a probe, together with the target, for an additional 150 msec. Reducing the target’s stimulus quality increased response latency. If the subjects identified the characters before the probe appeared and then selected an item for report, the clarity of the original array should not have affected response latency. Hence, Pashler concluded that his subjects used the probe to select from a precategorical store (early selection). Pashler’s experiment did not force subjects to rely on memory of the target; hence, although his experiment documented a situation in which subjects used early selection, it did not rule out late selection in studies of information persistence. We replicated Pashler’s findings and, using his logic, showed that when subjects are forced to rely on memory of the target, they select from a categorized store.     

Brief report: The development of superstitious beliefs in the effectiveness of treatment of anger: Evidence for the importance of experimental program evaluation in applied settings

Many youth placed in out of home care have serious anger and aggression problems. These youth create much administrative and staff frustration. This frustration can cause program administrators to look to new treatment modalities whether inside or outside of their specific milieu for the therapeutic solutions to these problems. This randomized control group study provides an example of the importance of experimental program evaluation when an applied setting begins a drift towards the use of new treatment modalities. The results showed that both treatment and control groups improved over time but that there was no differences between groups in the daily number of angry incidents, the number of youth negatively terminated from the program, or self-report of state-trait anger expression. The results also suggest that without this research the noneffective intervention would have continued to be funded and given causative status for the observed improvements in referred youth behavior into the foreseeable future. Moreover, the development of these types of superstitious beliefs may lead child care organizations to spend scarce dollars on expensive treatments that do not increase the efficacy of the treatment as usual. Thus, this study shows that there are potential economic and treatment efficacy reasons for the use of experimental program evaluation when new treatments are implemented.     

When Manipulation Backfires: The Effects of Time Delay and Requester on the Foot-in-the-Door Technique

We examined the effects of 2 variables on compliance rates within the foot-in-the-door procedure. Participants who agreed to a small request were presented with a larger request either immediately after the first request or 2 days later. The second request was presented either by the same person or by a different requester. Compared to a control group receiving only the large request, participants were more likely to agree to the second request in all experimental conditions except one. When the same requester presented the second request without delay, participants were less likely than the control group to agree to the target request. This latter condition represents a situation in which typical foot-in-the-door procedures can backfire on the requester.     

Ethical issues in genetics

The first section of the Notes on Moral Theology reviews ethical issues in genetics through the lenses of privacy-confidentiality; risk-benefit analysis in relation to prenatal diagnosis and gene therapy; and freedom-determinism/human dignity in the context of cloning. The author provides an overview of developments in genetics and highlights thematic issues common to these developments.