Time-interval acquisition on a 6502-based microcomputer

A versatile machine language subroutine and accompanying interface circuitry enable a 6502-based computer to collect time intervals between data events that can be represented by voltage transients. Intervals within the range of 150 microsec to 13.98 min can be collected with a resolution of ±25 microsec. Electrical interface circuitry includes signal conditioning and optical isolation and also allows user-specification of threshold levels on the data line. The machine language software timing routine and sequential interval handler include a 24-bit interval timer, a 16-bit interval counter, user-specified number and length of acquisition periods, and an out-of-memory tester. Although presented for implementation on the Apple II series of microcomputers, the transportability of the routine to other 6502-based machines is addressed.     

FUNCTIONAL ASSESSMENT,CURRICULAR REVISION,AND SEVERE BEHAVIOR PROBLEMS

An adolescent female with multiple handicaps and a long history of severely disruptive behavior participated in a functional assessment linked directly to specific revisions in her school curriculum. During Phase 1, reversal designs were used to test hypotheses pertaining to antecedent and auricular influences on problem behavior. During Phase 2, a multiple baseline across afternoon and morning time periods demonstrated that the auricular revisions were effective in eliminating severely disruptive behavior and increasing on-task responding. Data also showed that inappropriate “psychotic” speech was reduced and appropriate social interactions were increased. Follow-up results showed that the changes were maintained throughout the school year. Questionnaire data provided social validation of the procedures and outcomes. The findings are discussed in relation to their implications for functional assessment, individualized curricula, and positive programming for students with disabilities and serious behavior problems.     

Eco on Dewey

This study seeks to examine Umberto Eco's views of the key ideas in John Dewey's Art as Experience. Eco's proferred suggestion of transactional psychology as a corrective to Dewey's views is criticized as a misreading of Dewey's position.     

Comparison of two integrity tests based upon youthful or adult attitudes and experiences

To assess the effects on selection of two different approaches to the measurement of employment applicants' integrity, score data from two integrity tests were compared. A sample of 225 applicants to a drug supply company were administered both the Life Experience Inventory-Revised (LEI-R) and the Personnel Selection Inventory (PSI-3). The LEI-R items were largely derived from Freudian theory about the effects of childhood and youthful experiences on adult attitudes and behavior; the PSI-3 items were based upon the hypothesis that direct questions about deviant criminal and delinquent behavior and attitudes will yield responses predictive of employee integrity. Both the subscale scores and the total scores of the two inventories exhibited positive and moderately high intercorrelations. A principal (or common) factors analysis yielded two factors: one apparently a general deviance factor and the other a two-cluster LEI/PSI factor. Similar selection strategies (same cut-off score rules) yielded hit (agreement) rates from 71 to 82 percent. Implications for applicant integrity testing are discussed.     

Power and influence in the environment of family therapy*

This paper explores some of the ways in which family therapy theory and practice limits an appreciation of the contexts of families and family therapists. It focuses particularly upon how the rules which underlie patterns of relationships in social systems are made and maintained more by one part of a system than by another, and considers this (a) within families, (b) within various aspects of the social environment of families, and (c) within the organizational contexts of family therapists. It then proposes that the systemic thinking which family therapists apply to families is potentially applicable to wider contexts including international relationships.     

Holland's theory: Stability of avocational interests

The generality and stability of Holland's vocational choice model was tested by examining preference for avocational (leisure) activity. Based on their responses to the Strong Vocational Interest Blank, college students were placed into one of the six Holland groups. They also indicated preferred leisure activities on questionnaires that were administered at a 9-year interval. Six hypotheses were developed relating Holland groups to particular types of avocational behavior. For example, it was predicted that the Artistic group would be more active in cultural affairs and that the Enterprising group would prefer reading political and economic magazines. The initial test of these hypotheses during late adolescence confirmed five of the six predictions. A follow-up 9 years later confirmed all six hypotheses. These results provide some support for the notion that individuals self-select a variety of situations. Also, the relationships between Holland scales and leisure activity and possible implications for the vocational choice model are discussed.