Biomedical subjects
Publications and source records attributed to Linda A LeBlanc.
Wandering is a difficult-to-manage behavior problem for individuals with cognitive impairments that can jeopardize safety if an individual enters a hazardous area or becomes lost. This study investigated the effects of a cloth barrier on entry into an unsafe area. The cloth barrier reduced entry into the restricted area and had high treatment acceptability.
Nine behavior-analytic studies, each reporting data for a single participant, have shown that bizarre speech can be maintained by social reinforcement. In the current study, we controlled for a possible referral bias in this literature by including nonreferred participants with dual diagnoses. Functional analyses identified attention functions for 2 participants and nonsocial functions for the others. Noncontingent reinforcement decreased the bizarre speech of both participants who displayed attention-maintained bizarre speech.
Despite the detail that is provided on the potential negative outcomes of children and families who have chronic illnesses, most of these families show admirable resilience. Most children adjust to their illnesses within 1 year and most families achieve healthy stable functioning with accommodations for the illness. The challenge of adjusting to a chronic illness can provide an excellent opportunity for a child or adolescent to master crucial skills, such as emotion regulation and problem-solving. Mastery of these skills can engender strong self-esteem and confidence. As our knowledge about the predictive factors for positive behavioral outcomes increases, the pediatrician can be in the position to minimize the negative behavioral aspects of chronic illness and facilitate adjustment. Attention to the behavioral aspects of chronic illness in the three critical areas of psychosocial adjustment of the patient, adjustment of the family, and adherence to regimens, allows pediatricians to play a crucial role in prevention, early identification, and early interventions. We hope that the material that is included in this review provides a starting point for clinicians to understand and to begin to assess these critical factors in chronic illness in children and adolescents.
We evaluated video modeling and reinforcement for teaching perspective-taking skills to 3 children with autism using a multiple baseline design. Video modeling and reinforcement were effective; however, only 2 children were able to pass an untrained task, indicating limited generalization. The findings suggest that video modeling may be an effective technology for teaching perspective taking if researchers can continue to develop strategies for enhancing the generalization of these new skills.
The picture exchange communication system (PECS) is an augmentative communication system frequently used with children with autism (Bondy & Frost, 1994; Siegel, 2000; Yamall, 2000). Despite its common clinical use, no well-controlled empirical investigations have been conducted to test the effectiveness of PECS. Using a multiple baseline design, the present study examined the acquisition of PECS with 3 children with autism. In addition, the study examined the effects of PECS training on the emergence of speech in play and academic settings. Ancillary measures of social-communicative behaviors and problem behaviors were recorded. Results indicated that all 3 children met the learning criterion for PECS and showed concomitant increases in verbal speech. Ancillary gains were associated with increases in social-communicative behaviors and decreases in problem behaviors. The results are discussed in terms of the provision of empirical support for PECS as well as the concomitant positive side effects of its use.
Structured choice-making procedures, referred to as preference assessments, have been frequently used to identify reinforcers for individuals with developmental disabilities; however, few studies have examined the use of preference assessments with older adults with dementia. This study evaluated the utility of 4 versions of a 2-choice preference assessment for identifying items and activities associated with high levels of engagement in clients at an adult day care program. The same 8 items were presented in 4 formats (ie, verbal, pictorial, textual, tangible), and items from each assessment were ranked with respect to the subsequent level of participant engagement with each item. Correlations were computed between the preference hierarchy and subsequent engagement levels for each format. The format with the highest correlation coefficient was subsequently used in interventions in which frequent structured choice opportunities were presented throughout the day to increase engagement. For 3 of 4 participants, the vocal modality was optimal, while the tangible modality was optimal for the fourth. Moderate to substantial increases in engagement were observed for all participants when structured choices were offered. Implications for activity engagement in adult day care programs are discussed.