TREATMENT OF SELF-INJURY AND HAND MOUTHING FOLLOWING INCONCLUSIVE FUNCTIONAL ANALYSES

Numerous studies have used functional analyses to prescribe interventions for severe behavior disorders. The majority of these studies have focused on behavior that is clearly maintained by socially mediated reinforcement, such as contingent access to attention, tangibles, or escape from instructional demands. However, a significant proportion of functional analyses do not yield conclusive results. We examined interventions for 3 children with severe disabilities following inconclusive functional analyses. First, preferred stimuli were identified for each child via a stimulus preference assessment. Second, a functional analysis was conducted for 2 of the 3 children. High rates of aberrant behavior were seen even (if not especially) in no-interaction sessions. The 3rd child was observed for several consecutive no-interaction sessions; behavior persisted in this condition. Third, interventions based on environmental enrichment were analyzed in an analogue setting. For all of the children, environmental enrichment decreased aberrant behavior if preferred stimuli were used in the procedure. To obtain further reductions in aberrant behavior, explicit reinforcement of toy play was required for 2 children, and a brief (5-s) time-out was necessary with 1 child. Finally, effects of treatment carried over to the school or home environment following teacher or family training. Results are discussed in the context of basic reinforcement principles and future directions for research.     

Conditional discrimination after errorless and trial-and-error training.

Children were trained on a visual discrimination by stimulus shaping, stimulus fading, or trial-and-error. Those who did not acquire the conditional discrimination received a second, different training. More children initially trained by stimulus shaping acquired the conditional discrimination than did those initially trained with stimulus fading or trial-and-error. After a history of fading or trial-and-error training, children were less likely to acquire the conditional discrimination even after the more successful procedure of shaping was later used.     

Two-stage model of visual backward masking: sensory transmission and accrual of effective information as a function of target intensity and similarity.

A functional model is used to describe the effect of target intensity and target-set similarity on backward visual masking. The model consists of two distinct stages of visual information processing. The first stage is related to sensory transduction and transmission and is assumed to require a finite and measurable amount of time during which performance remains at chance. The second stage, associated with central processing, is characterized by a negatively accelerated growth function reflecting the accrual of effective information. Results show that the duration of the transmission stage is inversely related to target intensity. Surprisingly, the rate of information accrual is an interactive function of both target intensity and target-set similarity. The pattern of results is consistent with the interpretation that both intensity and similarity mediate their effect through a common mechanism--the accrual of effective information.     

Disruptive boys with stable and unstable high fighting behavior patterns during junior elementary school

Boys' fighting was assessed at ages six, eight, and nine. The boys (N = 69) had been selected from the 30% most disruptive children in kindergartens from low socioeconomic neighborhoods. Twenty-three percent of these disruptive boys were rated as high fighters on three assessments ("stable high fighters"), and 28% were rated as high fighters on two of the three assessments ("variable high fighters"). Forty-two percent were rated as high fighters only one out of three assessments ("occasional high fighters") and 7% were never rated as high fighters. Only high fighting in two successive years significantly increased the risk of being rated a high fighter in a following year. At age 10, stable high fighters (high fighters at ages 6, 8, 9) were perceived by teachers, peers, mothers, and the boys themselves as more disruptive and more antisocial than occasional high fighters. These results show an impressive self-other agreement in boys who have adopted a physically aggressive life style from an early age. The three groups did not differ on individual family demographic characteristics, but stable high fighters had a higher mean on an index of family socioeconomic disadvantage. Results indicate that the aggression scales which include only a few physical aggression items and many disruptive items (oppositional behavior, rejection, hyperactivity, inattention, etc.) probably aggregate two kinds of disruptive boys, the high-frequency fighters at high risk for stable disruptive, physically aggressive, and antisocial behaviors, and the disruptive low-frequency fighters who are at a lower risk of stable disruptive behavior and at a lower risk of early antisocial behavior.     

The Development of Physical Aggression from Toddlerhood to Pre-Adolescence: A Nation Wide Longitudinal Study of Canadian Children

The objectives of the study were to model the developmental trajectories of physical aggression (PA) from toddlerhood to pre-adolescence and to identify risk factors that distinguish typical (normative) from atypical developmental patterns. Ten cohorts of approximately 1,000 children (n = 10,658) drawn form a nationally representative (Canadian) sample were followed over 6 years. Using a group based trajectory approach, we identified three groups of children with distinct developmental trajectories between 2 and 11 years of age. One third of the children (31.1%) followed a low desisting trajectory, reflected in infrequent use of PA in toddlerhood and virtually no PA by pre-adolescence. The majority of children (52.2%) followed a moderate desisting trajectory, reflected in occasional use of PA in toddlerhood and infrequent use by pre-adolescence. One sixth of the children (16.6%) followed a high stable trajectory of PA. Multivariate logistic regression indicated that children in the high PA trajectory group were more likely to be boys (OR: 1.67; CI: 1.5–1.87), from low income families (OR: 1.4; CI; 1.27–1.67), from families where the mother had not completed high school (OR: 1.20; CI: 1.05–1.38) and who reported using hostile/ineffective parenting strategies (OR: 1.16; CI: 1.14–1.18). In sum, the results indicate that the typical developmental pattern of PA was one of occasional and declining use over time. However, about one sixth of children, mostly boys from disadvantaged families, exhibited an atypical developmental pattern reflected in more frequent and stable use of PA. The results suggest that most children learned relatively well to inhibit PA by the end of childhood and that a minority failed to do so. Family risks traditionally found to be associated with antisocial behaviors during adolescence appear to interfere with the socialization of PA during early and middle childhood.     

School social climate and teachers’ perceptions of classroom behavior problems: a 10 year longitudinal and multilevel study

Using longitudinal and cross-sectional data, the present research sought to identify school social climate predictors of teachers’ perceptions of classroom behavior problems. The social climate and classroom behavior in 107 public and private French speaking Canadian high schools was evaluated by 1399 teachers. The present analysis is unique in its ability to control for school differences in the enrollment of students with a history of problem behavior. As hypothesized, between-school variation in the proportion of students with histories of disruptive problems predicted high school classroom behavior problems. Moreover, when controlling for these between-school differences, concurrently measured school-level variables (type of school, location of school, and academic emphasis) are found to be significant predictors of classroom behavior problems. The theoretical and practical implications of the present findings are examined and recommendations are made for future research.     

The role of problem solving in complex intraverbal repertoires

We examined whether typically developing preschoolers could learn to use a problem-solving strategy that involved self-prompting with intraverbal chains to provide multiple responses to intraverbal categorization questions. Teaching the children to use the problem-solving strategy did not produce significant increases in target responses until problem solving was modeled and prompted. Following the model and prompts, all participants showed immediate significant increases in intraverbal categorization, and all prompts were quickly eliminated. Use of audible self-prompts was evident initially for all participants, but declined over time for 3 of the 4 children. Within-session response patterns remained consistent with use of the problem-solving strategy even when self-prompts were not audible. These findings suggest that teaching and prompting a problem-solving strategy can be an effective way to produce intraverbal categorization responses.     

Traditional prejudice and justice judgments: Does bias suppression moderate the relationship?

This research investigated how the relationship between prejudice and intergroup inequalities with justice judgments is modulated by individual differences in self-regulation of bias through suppression. The first study conducted among 170 White British adolescents revealed that the link between racism and intergroup inequality in justice judgments was moderated by bias suppression. Prejudice, bias suppression, and blatant as well as subtle justice judgments were assessed in a second study carried out with 103 Canadian White adolescents. Bias suppression moderated the link between racist beliefs toward Aboriginals and intergroup inequality in punitive rulings. Racism translated into intergroup inequality in the potential for rehabilitation, irrespective of the level of bias suppression. The role of bias suppression is discussed.     

US Retirement Migration to Mexico: Understanding Issues of Adaptation,Networking, and Social Integration

This paper describes the cultural adaptation of American retirees living in two traditional retirement destinations in Mexico (Lake Chapala, state of Jalisco and San Miguel de Allende, state of Guanajuato). Based on 375 surveys and follow-up interviews, the authors discuss issues of adaptation, identity, and networking with the American and local community. Findings present a complex picture of adaptation and integration to the Mexican community as well as networking with other US residents. The comparative case study allows researcher to see the different social and economic dynamics taking place in the two destinations. This study contributes to understand a largely ignored migration flow that is directly related to the aging of the baby boomers generation.