Heteronyms and polyphones: Categories of words with multiple phonemic representations

Heteronyms are words that have two different possible pronunciations that are associated with two (or more) different meanings. They can be used to investigate psychological mechanisms in reading and other cognitive processes. A corpus of English heteronyms has been collected and is tabulated here. In addition, a corpus of English polyphones is tabulated. These are words with different pronunciations that are not associated with different meanings.     

Assessing compliance to home relaxation: A simple technology for a critical problem

A simple, low-cost, and reliable technology for assessing compliance with relaxation practice in the natural environment is presented. Brief, audible cue tones are overdubbed onto selected client relaxation tapes, which are ordered by the therapist and then played in sequence by the client. The presence/absence or number of cue tones on each tape in the sequence is self-monitored, thereby providing the therapist with a record for objectively assessing whether or not the tapes were used as instructed. A clinical case example is presented to illustrate use of the procedure. Finally, advantages and limitations of the procedure are discussed.A portion of this paper (clinical case study) was presented at the meeting of the Association for Advancement of Behavior Therapy, November 1980, New York. This research was partly supported by the Medical Research Service of the Veterans Administration. The authors wish to express their appreciation to Leonard H. Epstein for his support and stimulation in the early development of this and related projects.     

Fully automated psychiatric diagnosis: Some new possibilities

A fully automated psychiatric diagnostic system is outlined that would rely on picture-preference items rather than verbal ones and that would involve a tailored approach rather than conventional “brute-strength” testing. The conditions under which such a system can diagnose patients in a way that might arouse their interest and cooperation are discussed. These include a set of diagnostic categories (perhaps a subset from DSM-III), availability of a single-frame video disk unit allowing random access to each frame, a microprocessor system with a memory capacity of about 32,000 bytes, known base rates of the population of interest, and known probabilities of a particular response to the items for each diagnostic category. Some futuristic extensions of the proposed system are suggested.     

Self-focused attention and belief perseverance

The perseverance of an erroneous belief was investigated in the debriefing paradigm as a function of self-focused attention. Subjects were given either success or failure experiences via bogus performance feedback and received this feedback under high or low mirror self-focusing. All subjects were subsequently debriefed about the false nature of the feedback, and then, before answering questions about their estimated actual performance and ability, mirror self-focus was again manipulated. The results showed that self-focus prior to debriefing increased belief perseverance while self-focus after debriefing reduced the perseverance effects. Discussion of these findings emphasized the role of self-focus in information processing before and adherence to veridical standards after debriefing.     

Vocal changes in stutterers and nonstutterers during monotoned speech

For years, reports have circulated that stutterers experience marked decrements in their stuttering when they speak or read in monotone. Wingate has suggested that the ameliorative effects of various novel speaking conditions on stuttering can be attributed to modifications in vocalization induced by such conditions. The present study was conducted to see whether this explanation would extend to monotoned speech as well. Ten teenage and adult stutterers and 10 normal speakers were tested in control and monotone reading conditions. Dependent measures were the frequencies of disfluency and stuttering, fundamental frequency, fundamental frequency standard deviation, vocal SPL, vocal SPL standard deviation, and fluent reading rate. Only within-group statistical comparisons were made, because members of the two groups could not be matched pairwise along critical vocal parameters. The major findings of this study indicated that across the two conditions, both groups significantly reduced their fundamental frequency, fundamental frequency standard deviation, vocal SPL and vocal SPL standard deviation. Only the stutterers exhibited a significant decrement in disfluency and stuttering. The normals did not evince enough disfluency in the control condition for a reduction to occur during monotoning. Neither group effected a reduction in fluent reading rates. These and other findings and interpretations are discussed relative to Wingate's modified vocalization hypothesis.     

Effect of list length on recall after dichotomous visual presentation

A visual analogue of an auditory dichotic listening experiment was carried out using what may be termed dichotomous visual presentation of lists of either three or four stimuli. Each stimulus consisted of several identical letters which were arranged so as to form the outline of a second, large letter. Subjects attended to either the small or large letters, and recalled either the attended or unattended letters first. It was found that the results for the three-stimulus and four-stimulus lists differed substantially; they were interpreted as consistent with the model of short-term memory proposed by Broadbent (1975).     

Classification in well-defined and ill-defined categories: evidence for common processing strategies

Early work in perceptual and conceptual categorization assumed that categories had criterial features and that category membership could be determined by logical rules for the combination of features. More recent theories have assumed that categories have an ill-defined structure and have prosposed probabilistic or global similarity models for the verification of category membership. In the experiments reported here, several models of categorization were compared, using one set of categories having criterial features and another set having an ill-defined structure. Schematic faces were used as exemplars in both cases. Because many models depend on distance in a multidimensional space for their predictions, in Experiment 1 a multidimensional scaling study was performed using the faces of both sets as stimuli, In Experiment 2, subjects learned the category membership of faces for the categories having criterial features. After learning, reaction times for category verification and typicality judgments were obtained. Subjects also judged the similarity of pairs of faces. Since these categories had characteristic as well as defining features, it was possible to test the predictions of the feature comparison model (Smith et al.), which asserts that reaction times and typicalities are affected by characteristic features. Only weak support for this model was obtained. Instead, it appeared that subjects developed logical rules for the classification of faces. A characteristic feature affected reaction times only when it was part of the rule system devised by the subject. The procedure for Experiment 3 was like that for Experiment 2, but with ill-defined rather than well-defined categories. The obtained reaction times had high correlations with some of the models for ill-defined categories. However, subjects' performance could best be described as one of feature testing based on a logical rule system for classification. These experiments indicate that whether or not categories have criterial features, subjects attempt to develop a set of feature tests that allow for exemplar classification. Previous evidence supporting probabilistic or similarity models may be interpreted as resulting from subjects' use of the most efficient rules for classification and the averaging of responses for subjects using different sets of rules.