Brief report: An extension of the sequential alternating treatment design using reversals with subjects not available concurrently

This brief report proposes an extension of the traditional Alternating Treatments Design that would be acceptable to use in hospital and residential settings where subjects are often not concurrently available. Concerns about the inability of traditional designs to work in these special situations and the emergence of a “scientist–practitioner split” are discussed. An example of how the Extended Alternating Treatments Design might be used is provided.     

Representation of on-line questionnaires in an editable,auditable database

A general way of describing multiple-choice questionnaires for on-line presentation is described. Some of the important features supported include random ordering of and sampling among questions, substitution of specific-question text into boilerplate question and response formats, a limited ability to bypass irrelevant questions, experimenter editing of response arrays, and automatic production of hard-copy versions of the questionnaire for use during computer breakdowns and for archival documentation. All editing operations on both questionnaires and response data create audit trails for future reference.     

Human optokinetic nystagmus: competition between stationary and moving displays

We reported earlier that occlusion of the central retina and stationary edges have highly interactive effects on the gain of optokinetic nystagmus (OKN; Murasugi, Howard, & Ohmi, 1986). In this study, we explored this effect in more detail. A central occluding band of variable height, flanked by vertical bars, was superimposed onto an array of dots moving at 30 degrees per second. The height of the occluding band required to abolish OKN increased with the separation of the vertical bars. For bars 3.5 degrees apart, OKN was abolished in most subjects when a band only 6' high ran between them. For bars 75 degrees apart, a band at least 20 degrees in height was required to abolish the response. The effects of the stationary figure depended to some extent on the subject's attention, but only at intermediate values of bar separation. Both low- and high-level mechanisms are proposed to account for the results.     

Emotional disturbance and the development of self-consciousness in adolescence

The development of self-consciousness and its relationship to emotional disturbance was examined in early and late adolescence. The Imaginary Audience Scale was administered to emotionally disturbed and nondisturbed adolescents. As predicted, results indicated that self-consciousness decreased with age in nondisturbed adolescents. For the emotionally disturbed adolescents, the development of self-consciousness in temporary situations did not follow consistent patterns, as indicated by interaction effects. A significant negative relationship was found between intelligence test scores and self-consciousness in the disturbed group. The findings support the premise that social-cognitive shifts found in early to late adolescence are disrupted in disturbed populations. The mediating role of social experience as a factor in cognitive and emotional development is discussed.     

GENERALIZED LANGUAGE LEARNING BY CHILDREN WITH SEVERE MENTAL RETARDATION: EFFECTS OF PEERS' EXPRESSIVE MODELING

In this study, we investigated the conditions that contribute to observational learning of generalized language in children with severe mental retardation. Matrix-training strategies were used to teach 6 children with mental retardation to combine known words into two- or three-word utterances consistent with syntactic rules. Subsequently, the children learned two or more unknown words concurrently, inducing word-referent relations consistent with these word order rules. Generalized learning of responses not taught directly was shown to be under experimental control using a multiple baseline design across submatrices. Expressive modeling of only four or five responses was sufficient to promote recombinative generalization in the expressive and receptive modalities. Thus, 95% to 98% of subjects' learning was attributed to generalization processes. This study demonstrates how the efficiency of language training with children with mental retardation might be enhanced by coupling observational learning and matrix-training strategies.     

“Snips and snails and puppy dog tails”: Gender of agent,recipient, and observer as determinants of perceptions of discipline

This study examined the role of gender of observer, parent, and child on judgments of the severity, appropriateness, and consequences of various forms of discipline. Young adults read stories describing a disciplinary encounter between parent and child and made required judgments. Consistent gender differences emerged. Females judged the discipline more harshly than males, rating it as more severe, more abusive, less appropriate, and more likely to result in emotional harm. Discipline of daughters was judged to be harsher than identical treatment of sons, particularly when the discipline was administered by the father. The implications of differential judgments are discussed.     

Incorporating good programs into the larger laboratory context

The Scheduled Measurement System (SMS) is a collection of related programs for administering performance and rating tasks to human subjects. It was designed to provide a common task scheduling and data management environment for a diversity of measures. SMS has greatly reduced the effort required to analyze and archive data after experiments, but it has been less successful in reducing some of the effort required to implement experiments. While programming is not difficult, documentation and user training remain the most primitive parts of the system.