A fuzzy system for mapping worker attributes to tasks

We developed a prototype of a rule-based expert system that facilitates a mapping from tasks comprising a job to the knowledge, skills, and abilities (KSAs) ostensibly required to perform the tasks. A variant of fuzzy logic was employed in the inference process. Signal detection theory was used to evaluate the performance of the system. The results indicated that the system performed well in terms of its ability to discriminate between the KSAs that are required of a task and those that are not. The discussion focuses on implications of the system and its use as an intelligent assistant in human resources planning.     

Communication Differences Between Physicians and Their Patients in an Oncology Setting

The physician-patient relationship has critical importance in the quality of medical care, especially in the oncology setting. Of particular interest over the past two decades has been the communication between physicians and their patients. It is understood that communication is related to patient and physician satisfaction as well as other medical outcomes. However, despite this interest and attention, investigators have only recently begun to assess the communication between physicians and patients from the patient's point of view. Additionally, previous investigations have primarily relied upon retrospective reports of the interaction from patients or physicians. The current investigation assessed physician–patient communication in an oncology setting, both as it was occurring and following the interaction. The units of analysis included participant ratings as well as those of trained observers. Findings revealed that physicians and patients disagree as to the valence of the messages which transpired. Additionally, results suggest that it is the patients who distort the messages in the positive direction. Research and clinical implications of this disagreement and positivity bias are discussed.     

Personality, Social Networks, and Perceived Social Support among Alcoholics: A Structural Equation Analysis

ABSTRACT In this study we tested relations among personality characteristics, social network properties, and perceived social support both concurrently and prospectively. A sample of 294 men in treatment at a Department of Veterans Affairs Alcohol Treatment Unit was assessed during treatment and 3 months after discharge. Results of the cross-sectional structural equation analyses indicated that the personality characteristics of extraversion and neu-roticism were related to both social network properties and perceived social support. Characteristics of the alcoholic's social network were also related to perceived availability of support. Longitudinal analyses of perceived social support after treatment indicated that two social network properties (size of the network and the proportion of confidants) were predictive net of initial levels of social support. Extraversion and neuroticism were found to be indi-rectly related to perceived social support at Time 2 through their effects on social network properties and perceived social support during treatment. Implications of these findings for models of the nature and determinants of perceived social support are discussed.     

Overview and examples of instructional modules

The fundamental instructional design concepts underlying the systematic development of new computer-based courseware are defined and illustrated. The advantages of the electronic chalkboard and electronic studyguide are discussed.     

'But they aren't motivated …' issues concerned with encouraging motivation for change in families

This article is an attempt to provide some frameworks for understanding aspects of the context of families which support or constrain motivation for change. A theme of the entire paper is that ambivalence is normal and that it is therefore useful to regard families both as motivated to change and motivated to maintain stability. Part I focuses particularly upon family–referrer– therapist relationships and Part II upon family–therapist relationships. Part I begins with an exploration of the idea of motivation as a process and outlines the usefulness of the concept of ambivalence. Its main focus however is upon the importance of considering referrers when attempting to assess the motivation of family members for change.
Part II considers the relationship between the family and the therapist and takes account of some important aspects of the contexts of both. It ends with a summary of some experiential exercises which enable one's personal understanding of motivation issues to develop.     

Individual and group differences in intelligence and speed of information processing

A battery of eight different reaction time (RT) tests, measuring the speed with which individuals perform various elementary cognitive processes, and a group test of scholastic aptitude (the Armed Services Vocational Aptitude Battery, ASVAB) were given to 50 black and 56 white male vocational college students. The regression of the general factor scores of the ASVAB on the RT measures yielded a shrunken multiple correlation of 0.465. Although discriminant analyses, when applied separately to the ASVAB subtests and to the RT variables, showed highly comparable overall discrimination (over 70% correct classification) between the black and white groups, factor scores derived from the general factor (labeled ‘speed of information processing’) of the RT battery show only about one-third as large a mean black-white difference as the mean group difference on the general factor scores derived from the ASVAB. Comparisons were also made between the 106 vocational college students and 100 university students of higher average academic aptitude who had previously been tested on the same RT battery (Vernon, 1983a). These groups showed marked differences on the RT variables, the largest differences occuring on the tests that required more complex cognitive processing. The more complex RT tests also correlate most highly with the psychometric measures of ability within each group. The results are consistent with the hypothesis that individual differences and the mean differences between groups in psychometric abilities and scholastic achievement are related to differences in the speed of information processing as measured in elementary cognitive tasks.     

Endemic images and the desensitization process

Forty-eight test-anxious subjects were selected and randomly assigned to one of three treatment conditions. The subjects in the first group were asked to imagine a series of images that reflected relaxing motifs and these images were counterposed with a series of items from a test-anxiety hierarchy. The second group received a course of group systematic desensitization. The third group (control) was asked to “think about relaxing” as recorded chamber music was played. Two one-way Analyses of Variance (ANOVAs) and a series of Scheffé multiple comparisons revealed that the subjects' post-therapy levels of anxiety as measured by the Suinn Test Anxiety Behavior Scale (STABS), as well as their grade point averages (GPA) were significantly different under the endemic image and control procedures. Significant differences were also observed for these measures when the scores of the systematic desensitization and control groups were compared. No significant differences were observed between the post-therapy scores of the endemic image and systematic desensitization groups. The utility of the endemic imagery treatment for clients who are unable to undergo deep muscle relaxation because of physical infirmities, for example, cerebral palsy, is noted and a call for more extensive research is made.     

INTELLIGENCE,COGNITIVE STYLES,AND BRAIN LATERALIZATION

The concept of intelligence as a kind of mental power is criticized, since it is essentially static. Many authors wish to substitute the concept of processes or styles of thinking and learning, which might be developed by appropriate training. But there is no consensus as to which styles are of major importance in intellectual growth, and few of those suggested can be assessed objectively. They resemble the historical notion of types; and like types, they may be weak in internal consistency and generalizability. Some types which are defined by psychometric variables or factors are more promising. Currently the contrast between left brain and right brain functions is over-popularized. But it is associated both with verbal vs visuospatial abilities, and with analytic-sequential vs holistic processing. The right brain has been credited with a wide range of other functions for which there is little evidence, e.g., intuition, creativity, meditational trance states, etc. Findings from studies of brain-damaged or commissurotomized patients, and experiments with normal subjects, are outlined. The dichotomy is not the same as Das' simultaneous vs successive, Freud's primary vs secondary processes, Witkin's field independence, or Guilford's convergent vs divergent. Certain implications for education, for mental testing, and for cross-cultural research are discussed.     

A Lotus 1-2-3-based system for recording and maintaining body weight of laboratory animals

Body-weight maintenance is required in a variety of behavioral and physiological studies. A PC-based animal-weighing system is described; it features automated data collection and allows for accurate control of body weight in test animals via manipulation of food intake. Major system components are a PC XT-compatible computer, Lotus 1-2-3 and National Instruments Measure software, and a digital electronic balance. The system is controlled by Lotus macros, which present menus to the user. Menus provide for the basic operations of the system, including establishing new data files, collecting weight data, printing, and transferring files to a laboratory minicomputer. The optional weight-maintenance algorithm calculates the amount of food necessary to maintain target body weights. Some important aspects of this algorithm, including maintenance-feeding and gain parameters, can be manipulated to reduce weight oscillation in test animals or to accommodate the maintenance of body weight of different animal species. The system facilitates acquisition and recording of weight data, minimizes the frequency of error, and reduces variability both within and across animals when body-weight maintenance is required.     

STRATEGIES TO INCREASE EXERCISE-REPORT CORRESPONDENCE BY BOYS WITH MODERATE MENTAL RETARDATION: COLLATERAL CHANGES IN INTENTION-EXERCISE CORRESPONDENCE

Correspondence between verbal and nonverbal behavior in an exercise room was taught to 4 13-year-old boys diagnosed with moderate mental retardation. Participants were asked prior to each exercise session which exercise machine(s) they intended to use. No contingencies on stating intentions (promising) were applied. Following the exercise session, participants were asked to say (report) which machine(s) they had used. Following the baseline condition, do-report correspondence training was introduced sequentially across participants. During do-report correspondence training, accurate reporting was reinforced. High rates of both do-report and promise-do correspondence were observed. Data were analyzed via a multiple baseline across subjects design and contingency-space analysis. Results are discussed with regard to observed changes in promise-do correspondence subsequent to observed changes in do-report correspondence.