An analysis of children's oppositional behavior

The purpose of the present study was to examine the relationship between children's oppositional behavior and the following two variables: number of commands issued and time from command presentation. Twenty-four five year-old children and their mothers served as subjects. The results indicated an increase in oppositional behavior as the number of commands increased. Furthermore, most oppositional behavior occurred immediately following the presentation of a command.This study was part of a larger investigation examining the effects of time-out on noncompliance (Scarboro & Forehand, 1975).The investigation was supported by a grant from the University of Georgia research council.     

Multiple effects of a procedure to increase sitting in a hyperactive, retarded boy

A prompting and differential reinforcement procedure was used to increase sitting in a hyperactive, retarded boy in a remedial preschool. This procedure not only increased sitting, but had the additional effects of decreasing posturing while leaving normal walking unaffected, and increasing the use of toys and proximity to children. All of these changes can be considered socially desirable effects of the sitting program. The results suggest that preschool programs can be designed that will treat several behaviors simultaneously in order to maximize a teacher's effectiveness.     

A note on behavior tolerance to meprobamate

Behavioral tolerance to meprobamate was demonstrated in a cat, on an FI schedule, without behavior taking place during the chronic treatment. Behavioral factors, such as the development of corrective patterns of behavior, do not explain behavioral tolerance in this case.     

Differential effects of token reinforcement on instruction-following behavior in retarded students instructed as a group

This study was addressed to the problem of applying behavior modification techniques on a group basis to a class of retarded students with "attentional deficits". Seven boys, age 8 to 15 yr, characterized as showing severe "attentional" problems or disruptive behavior in their respective classrooms, participated daily for 30-min sessions in a special class over a 1.5-month period. In each session, verbal instructions were given to the class as a whole. In control sessions, each appropriate instruction-following response by a child produced praise for that child. In experimental sessions, appropriate responses also produced tokens exchangeable for tangible reinforcers after the session. Token reinforcement differentially maintained instruction-following behavior in four children while one responded appropriately to most instructions and a second improved continuously during the study. While the data suggest that the present approach can be successfully applied to the alteration of instruction-following behavior in retarded children, its major contribution may be that of providing objective quantitative information about such behavior.     

A note on an extension of PDL

Recently visibly pushdown automata have been extended to so-called k-phase multi-stack visibly pushdown automata (k-MVPAs). On the occasion of introducing k-MVPAs, it has been asked whether the extension of Propositional Dynamic Logic with k-MVPAs still leads to a decidable logic. This question is answered negatively here.     

A comparison of procedures for eliminating self-injurious behavior of retarded adolescents

An attempt was made to eliminate the self-injurious behaviors of four institutionalized, profoundly retarded adolescents. Some of the behaviors studied were: face-slapping, face-banging, hair-pulling, face-scratching, and finger-biting. Three remediative approaches to self-injurious behavior were compared. Elimination of all social consequences of the self-injurious behavior was not effective with the two subjects with whom it was attempted. The same two subjects were exposed to a procedure involving reinforcement of non-self-injurious behavior which was ineffective under no food deprivation and was effective with one of the two subjects under mild food deprivation. Electric-shock punishment eliminated the self-injurious behaviors of all four subjects with whom it was attempted. The results suggested that punishment was more effective than differential reinforcement of non-self-injurious behavior which, in turn, was more effective than extinction through elimination of social consequences. However, the effects of the punishment were usually specific to the setting in which it was administered. In order to eliminate the self-injurious behaviors of severely retarded children, it is apparently necessary to carry out the treatment in many of the settings in which it occurs.     

The lack of effects of enriched and automated environments on the adaptive and maladaptive behavior of mentally retarded persons

This study addressed the relative effects of repeated exposures to an austere institutional dayroom, a toy enriched dayroom, a PUSH (Play Units for the Severely Handicapped) room that contained automated stimulation devices within a physical terrain, and a modular room that contained wall mounted automated stimulation devices, on the adaptive and maladaptive freeplay behavior of six groups of institutionalized mentally retarded individuals (N = 6 per group). Group One was observed in all four settings, whereas the other five were observed in two or more of the active settings. The results indicated that (1) there were only slight differences in object-directed adaptive behavior when the three active settings were compared to the austere setting, and (2) only the higher functioning subjects (Group Five) displayed consistent individual differences on any of the measures when active settings were compared. None of the comparisons, however, revealed statistically significant effects. This study clearly demonstrates the need for active control conditions, raises questions regarding the relevance of much of the previous research, and suggests that further refinements will be necessary before environments such as those in the present study produce meaningful changes in appropriate environmental interaction in the absence of staff mediation.     

A cautionary note on the effects of range restriction on predictor intercorrelations

The purpose of this research report is to highlight a unique set of issues that arise when considering the effects of range restriction in the context of estimating predictor intercorrelations. Three approaches are used to illustrate the issue: simulation, a concrete applied example, and a reanalysis of a meta-analysis of ability-interview correlations. The general conclusion is that a predictor intercorrelation can differ dramatically from the population value when both predictors are used in a composite that is used operationally for selection. The compensatory nature of a composite means that low scorers on one predictor can only obtain high scores on the composite if they obtain very high scores on the other predictor; this phenomenon distorts the correlation between the predictors.     

Infant transfer behavior in humans: A note on the exploitation of young

Human infant transfers filmed in West New Guinea and stored in the archives of Max-Planck Geselschaft are formally described and analyzed relative to reports of similar behavior from nonhuman primates in laboratory and field studies. Motor patterns directed from one individual to another were discriminated and grouped into five categories of behavior ordered according to their relative likelihoods of “damaging aggression” [Fagen, American Naturalist, 115:858–869, 1980]. Transfers generally occurred between two females of different reproductive conditions. Most interactions were directed from the holder of the infant to the infant, demonstrating that the infant is the recipient of most nondamaging as well as potentially damaging behavior. While transfers are characterized by “aggressive restraint,” the least damaging behavior is most likely to precede a transfer and may function to prolong the relative duration of infant holding. Behavior with a relatively high likelihood of damage to the infant by the infant holder is as likely to occur before as after transfer, suggesting that infant transfer behavior in this human society reflects competitive interactions among adult females.