Courseware for observational research (COR): A new approach to teaching naturalistic observation

Naturalistic observation is one of the most basic and widely used techniques of scientific research, yet it often receives only a cursory treatment in the research methods course. In this paper, we describe a new interactive multimedia software program that teaches interval, frequency, and duration coding with the use of brief digitized video clips and model check sheets. The program teaches basic observational techniques by leading students through the stages of developing a behavioral coding scheme, collecting data, establishing interrater reliability, and analyzing with chi square. It also has a laboratory component that allows students to practice their skills.     

Eye movement of perceivers during audiovisualspeech perception

Perceiver eye movements were recorded during audiovisual presentations of extended monologues. Monologues were presented at different image sizes and with different levels of acoustic masking noise. Two clear targets of gaze fixation were identified, the eyes and the mouth. Regardless of image size, perceivers of both Japanese and English gazed more at the mouth as masking noise levels increased. However, even at thehighest noise levels and largest image sizes, subjects gazed at the mouth only about half the time. For the eye target, perceivers typically gazed at one eye more than the other, and the tendency became stronger at higher noise levels. English perceivers displayed more variety of gaze-sequence patterns (e.g., left eye to mouth to left eye to right eye) and persisted in using them at higher noise levels than did Japanese perceivers. No segment-level correlations were found between perceiver eye motions and phoneme identity of the stimuli.     

Multiple spatial codes and temporal overlap in choice-reaction tasks

Experiments by Umiltà and Liotti (1987) and Lamberts, Tavernier, & d'Ydewalle (1992) examined the Simon effect (an influence of irrelevant stimulus location on reaction time) as a function of multiple frames of reference. The Simon effect was absent for all reference frames in the former experiment, leading Stoffer (1991) to propose that a spatial code is formed only if the last step in directing attention to the imperative stimulus is a lateral shift. However, the Simon effect was evident for all frames in the latter experiment. Hommel (1994) proposed that the multiple spatial codes implied by Lamberts et al.'s findings were also activated in Umiltà and Liotti's experiment but had decayed by the time the relevant stimulus information had been identified. Experiments 1, 2, and 3 examined these accounts of attention shifting, multiple codes, and temporal overlap for variations of the Simon task in which the stimulus could occur in one of either eight or four possible stimulus locations. Three stimulus sets that differed in ease of discriminability were used in each experiment. Experiments 1 and 2 were replications and extensions of those of Lamberts et al. and Umiltá and Liotti, respectively. In both experiments, two boxes, with a stimulus inside of one, appeared simultaneously, and the subject was to respond to the identity of the stimulus. Experiment 3 used a procedure in which the four stimulus locations were demarcated by three vertical lines. Two of the three experiments showed Simon effects with respect to multiple frames of reference, and the magnitude of these effects was a decreasing function of the difficulty of stimulus discriminability. Spatial compatibility proper was examined in Experiment 4 using the same layout as Experiment 3. In this case, only the relevant frame of reference was coded. On the whole, the results indicate that multiple codes are formed, but not automatically, and that those codes decay when irrelevant.     

DISSOCIATION OF STORAGE AND REHEARSAL IN VERBAL WORKING MEMORY:

Abstract— Current cognitive models of verbal working memory include two components a phonological store and a rehearsal mechanism that refreshes the contents of this store We present research using positron emission tomography (PET) to provide further evidence for this functional division In Experiment I, subjects performed a variant of Sternberg's (1966) item recognition task Experiment 2 used a continuous memory task with control conditions designed to separate the brain regions underlying storage and rehearsal The results show that independent brain regions mediate storage and rehearsal In Experiment 3, a dual-task procedure supported the assumption that these memory tasks elicited a rehearsal strategy     

Can phronesis save the life of medical ethics?

There has been a growing interest in casuistry since the ground breaking work of Jonsen and Toulmin. Casuistry, in their view, offers the possibility of securing the moral agreement that policy makers desire but which has proved elusive to theory driven approaches to ethics. However, their account of casuistry is dependent upon the exercise of phronesis. As recent discussions of phronesis make clear, this requires attention not only to the particulars of the case, but also to the substantive goods at stake in the case. Without agreement on these goods attention to cases is unlikely to secure the productive consensus that Jonson and Toulmin seek.     

SEARCHING FOR MOOD DEPENDENT MEMORY

Though it has sometimes been shown that events encoded in a certain state of affect or mood are most retrievable in that state, neither the circumstances under which mood dependent memory (MDM) occurs nor the mechanisms that enable its emergence are as yet well understood. The purpose of the research reviewed here is to clarify these circumstances and mechanisms. To this end, the research focuses on four factors that appear to play pivotal roles in the occurrence of MDM. These factors are (a) the nature of the target events or the manner in which they are encoded (ie, are events generated through internal mental processes such as reasoning, imagination, or thought more apt to be forgotten following a shift in sources?), (b) the nature of the retrieval task (is it possible to demonstrate mood dependence using implicit rather than explicit measures of memory?), (c) efficacy of mood modification (do strong, stable, and authentic affective states promote the appearance of MDM?), and (d) whether alterations in affect are one-dimensional or two-dimensional (does a shift along both the pleasure and the arousal dimensions of mood impair memory more than does a shift along the pleasure dimension alone?) Exploring these four factors in detail may make it possible to resolve much of the controversy that now surrounds MDM, and to acquire fresh insights into its cognitive and affective foundations.     

Gross overactivity: A study by direct observation

A group of children who were rated as grossly overactive by a clinician was compared with a matched control group on various measurements of their behavior in a clinical interview situation and in a psychological test situation. An observational schedule was developed to discern those behaviors related to the concept of overactivity. These behaviors were operationally defined to enable reliable replication. The experimental group showed an excess in quantity of mechanically recorded movement as well as an increase in a cluster of behaviors including distractibility and disinhibition. Situational effects on those symptoms were noted. The symptoms were best observed in a semistructured clinical interview situation.This project was carried out while S. L. Luk was a research worker at the Institute of Psychiatry, London, supported by the University of Hong Kong. The authors express sincere thanks to Dr. S. Sandberg for her help in the reliability study, to Dr. J. Bacon-Soong for his statistical advice, and to Miss Ivy Wong for secretarial help.The coding scheme is available from the author.     

The Influence of Public Self-Consciousness and the Audience's Characteristics on Withdrawal from Embarrassing Situations

ABSTRACT Two studies examined the impact of public self-consciousness (PSC) and the audience's characteristics on withdrawal from embarrassing situations In Study 1 subjects verbally responded to a series of hypothetical events of an embarrassing nature before audiences described as either strangers or friends Subjects high in PSC expressed similar tendencies to withdraw no matter who the audience was, whereas low PSC subjects reported that they were less likely to withdraw when the audience was composed of friends as compared to strangers Study 2 had high and low PSC subjects perform an embarrassing act in front of either a friend or two types of strangers–those they either would or would not interact with in the future Low PSC subjects withdrew sooner from an audience of strangers they would have to interact with than from either an audience of friends or strangers they would never see again Again, high PSC subjects responded similarly to the three audiences They tended to withdraw quickly no matter who the audience was Discussion focuses on the role situational and dispositional factors play in withdrawal from embarrassing situations     

The language dependence of accuracy

David Miller has demonstrated to the satisfaction of a variety of philosophers that the accuracy of false quantitative theories is language dependent (cf. Miller 1975). This demonstration renders the accuracy-based mode of comparison for such theories obsolete. The purpose of this essay is to supply an alternate basis for theory comparison which in this paper is deemed the knowledge-based mode of quantitative theory comparison. It is argued that the status of a quantitative theory as knowledge depends primarily on the soundness of the measurement procedure which produced the theory; such soundness is invariant, on my view, under Milleresque translations. This point is the basis for the linguistic invariance of knowledgelikeness. When the aim of science is not construed simply in terms of the truthlikeness or accuracy of theories, but in terms of the knowledge such theories embody, Miller's language dependence problem is overcome. One result of this analysis is that the possibility of objective scientific progress is restored, a possibility that Miller's analysis has prima facie defeated.I am grateful to Noretta Koertge for numerous comments and criticisms. Thanks are also due to David Miller for clarification of several points in his (1975). Veronica Barnes also made a number of pertinent observations.