Making reference: The cohesive use of pronouns in the narrative discourse of hemidecorticate adolescents

The cohesive use of referential language in narrative production reveals communicative goals as well as specific aspects of language use. A formalism for analyzing pronominal cohesion was developed and applied to the narrative discourse of three hemidecorticate adolescents. The results revealed hemisphere-dependent differences in overall narrative skill as well as distinct individual discourse strategies. Neither left hemidecorticate planned narration in extended discourse units: One demonstrated a linear and highly explicit discourse style with redundant over-statement of referent nouns and the other produced narratives cluttered with pronouns of both correct and ambiguous reference, relying on nonpersonal pronouns at considerable cost to narrative specificity. The right hemidecorticate produced narratives that were more economical in form and richer in content: He was the only subject able to maintain simultaneous story lines with multiple pronouns and referential relationships cohesively embedded. All subjects expressed at least some story content, but only the right hemidecorticate narratives conveyed suggestion and implication as well as explicit statement.     

An assessment of the potential utility of “scientific jury selection”: A “thought experiment” approach

The efficacy of “scientific jury selection” (the use of social science methodology to aid the jury selection process) has been a subject of considerable contention. Unfortunately, such issues are difficult to address empirically, especially at the level of jury rather than juror decisions. One means of addressing some of these questions is through the use of “thought experiments” or computer simulations that are based not on intuition or conventional wisdom alone but guided by relevant empirical data. This paper reports the outcomes of simulations that explore jury verdict consequences from the use of scientific jury selection to (a) obtain changes in venue, (b) select jurors, and (c) accomplish both of the preceding. The results indicated that the potential effects of scientific jury selection are strongest when the techniques are successful in bringing about changes of venue or more representative jury panels. Somewhat weaker, albeit still consequential, effects were observed in those instances where scientific jury selection techniques are used to select particular jurors. The psychological and legal implications of these results, and the thought experiment approach in general, are discussed.     

Gender, neuroticism and speed-accuracy tradeoffs on a choice reaction-time task

The Eysenck Personality Questionnaire and Personality Inventory were administered to 96 college students, along with a choice reaction-time (RT)/movement-time task. The results show that females and Ss high on neuroticism made significantly fewer ballistic errors on the RT. The implications for RT research are discussed.     

The use of computer graphics animation in motion perception research

The advantages and limitations of using computer-animated stimuli in studying motion perception are discussed. Most current programs of motion perception research could not be pursued without the use of computer graphics animation. Computer-generated displays afford latitudes of freedom and control that are almost impossible to attain through conventional methods. There are, however, limitations to this presentational medium. At present, computer-generated displays present simplified approximations of the dynamics in natural events. We know very little about how the differences between natural events and computer simulations influence perceptual processing. In practice, we tend to assume that the differences are irrelevant to the questions under study and that findings with computer-generated stimuli will generalize to natural events.     

Behaviour patterns within a general hospital psychiatric unit: an observational study.

Employing a reliable and objective ‘behavioural mapping’ procedure, information was obtained by three independent observers, on what, where and when staff and patients engaged in various categories of behaviour, within a general hospital psychiatric unit. Observations were undertaken during two separate 6-day periods, using a seven category behaviour rating scale. Staff and patient behaviour profiles were found to be stable across the two rating periods, despite an almost complete change in the patient population from the first to the second set of observations. Results also indicated that staff spend a majority of their time engaged in interaction with their peers, or engaged in solitary task activity, with little of their time being spent in interaction with patients. Patients spent approximately half of their time in solitary behaviour, and when they were observed to be interacting it was found to be primarily with their peers. A significant negative correlation was obtained between those areas of the unit most frequently occupied by staff and patients, suggesting a territorial separation of the two groups. Analysis, of interaction rates by time, further indicated that the vast majority of interaction was observed to occur during the period 9.00a.m. to 5.00p.m. Monday to Friday. Some implications of the observed findings are discussed and it is concluded that the data suggest that the therapeutic potential of the observed unit is under-utilized.     

Exact conditional tests for cross-classifications: Approximation of attained significance levels

A procedure is proposed for approximating attained significance levels of exact conditional tests. The procedure utilizes a sampling from the null distribution of tables having the same marginal frequencies as the observed table. Application of the approximation through a computer subroutine yields precise approximations for practically any table dimensions and sample size.     

Behavioral programming with the APPLE II microcomputer

A system is described that allows behavioral programming with an APPLE II microcomputer. Input and output interfaces were designed with relays so that maximum flexibility could be obtained with a variety of behavioral chambers and boxes. The system is inexpensive and easily constructed and requires no special knowledge of computers to program or maintain.     

The effect on endurance of a verbal commitment versus exhortation,task information,and monetary incentives

Fifty-six male students worked to better their initial endurance scores on a second trial. Those who had formed a verbal commitment to do so performed significantly better than those offered a monetary incentive, exhortations to try hard, or information on how to deal with fatigue cues. The power of the “contract” in this study appears to be due not to additional specificity of information or to experimenter demands but more directly to the reinforcement value of having made a commitment in the presence of another.