Self-monitoring behavior in a case of severe auditory agnosia with aphasia

This case report describes an unusual combination of speech and language deficits secondary to bilateral infarctions in a 62-year-old woman. The patient was administered an extensive series of speech, language, and audiologic tests and was found to exhibit a fluent aphasia in which reading and writing were extremely well preserved in comparison to auditory comprehension and oral expression, and a severe auditory agnosia. In spite of her auditory processing deficits, the patient exhibited unexpected self-monitoring ability and the capacity to form acoustic images on visual tasks. The manner in which she corrected and attempted to correct her phonemic errors, while ignoring semantic errors, suggests that different mechanisms may underlie the monitoring of these errors.     

Detecting conjunctions of color and form in parallel

Researchers have proposed that graphical efficacy may be determined, in part, by the nature of the perceptual interactions that exist between attributes used to create graphical displays. One extreme type of interaction isintegrality, in which two or more physical dimensions are represented as a single psychological dimension in the observer. An alternative type of interaction isconfigurality, in which a global emergent dimension is availableto the observer in addition to the component attributes. Thirteen stimulus sets, each composed of attributes commonly used in the design of graphs, were submitted to the performance-based diagnostics of integrality and configurality. Analyses suggest a continuum of configurality among the present stimulus sets, with little evidence for integral graphical attributes. The configural pattern of results was more common when two identical dimensions were paired (homogeneous stimuli) than when two different dimensions were paired (heterogeneous stimuli). However, there was no evidence that pairs of dimensions belonging to a single object (object integration) were any more configural than dimensions belonging to different objects. Object integration was, however, consistently related to inefficient performance in tasks requiring the filtering of one of two component dimensions.     

A Comparative Evaluation of Police Suicide Rate Validity

The authors assessed sensitivity, specificity, and predictive value of official police suicide rates and compared them to municipal workers. Deaths officially classified as suicide, accidental, and undetermined were submitted to a panel of medical examiners for validation. Six cases originally in the accident and undetermined rubric were reclassified as suicide. Official police suicide rates had less sensitivity (83.3% compared to 92.3%) of actual suicides than municipal worker rates. Police suicide rates also showed a lower negative proportion than municipal worker rates (86.2% compared to 98.7%). A generalizable sensitivity proportion equation for assessing suicide rates in other police groups is presented.     

Behavioral Activation Treatment for Depression in Older Adults Delivered via Videoconferencing: A Pilot Study

Depression affects up to 25% of older adults. Underdetection and subsequent undertreatment of depression in older adults has been attributed in part to difficulties in older adults being able to access treatment. This uncontrolled pilot study, N = 3, explored the acceptability and efficacy of a brief behavioral activation treatment delivered via videoconferencing to 3 participants, aged 64 to 73 years, diagnosed with major depressive disorder. The results indicate that a 5-session behavioral activation treatment delivered via videoconferencing produced clinically significant and reliable decreases in depression. The results also showed clinically significant and reliable decreases in negative affect and clinically significant and reliable increases in positive affect. Treatment gains were maintained at 1-month follow-up. Videoconferencing can be a valuable and effective tool in increasing accessibility to psychological treatment for older adults.     

Dividing attention between color and shape revisited: redundant targets coactivate only when parts of the same perceptual object

When a single perceptual object provides two different reasons for a particular decision (by containing two qualitatively different targets), detailed analyses of the response-time distributions have shown that the two different reasons are jointly responsible for the final decision. The question is whether this coactivation occurs because the two targets contained by the object were from separate dimensions (e.g., color and shape) or were parts of the same perceptual object. Early work argued in favor of dimensions, implying that the types of information being processed is critical, as opposed to their sources; more recent work has argued in favor of objects. Experiment 1 in the present paper corrected for a potential bias in the design of some recent studies and found additional evidence in favor of objects. Two additional experiments directly manipulated whether redundant targets would be perceived as parts of one or two perceptual objects (while holding all else constant) and produced the strongest evidence to date that coactivation requires that the redundant targets be parts of one object. This reverses the original conclusion and suggests that the sources of information are critical, as opposed to the types. Two specific versions of the object-based model are discussed.     

J scale models for preference behavior

Three models for preference behavior are developed within the framework of Coombs' theory of data, an absolute difference model, a ratio model, and a two-stage model. Each of these models describes a mechanism by which unilateral preferences may be determined on a unidimensionalJ scale. Differential implications of the models for response latencies are derived, and some early data employing an application of the unfolding technique are presented in support of the two-stage model.Based upon portions of the author's doctoral dissertation, University of Michigan, 1962. This research was supported in part by NSF Grant No. G5820 to Professor C. H. Coombs. The writer also wishes to thank Professor William Hays, who served as committee chairman and offered considerable support and assistance.