Examination of ambiguous stimulus preferences with duration-based measures

Items that produced ambiguous results in an approach-based preference assessment were reassessed using a duration-based assessment. The reinforcing effects of three items on free-operant responding were subsequently tested. The results suggested that the duration-based assessment produced slightly more differentiated results and that predictions about reinforcer value, based on this assessment, were accurate.     

A systematic evaluation of preferences identified through person-centered planning for people with profound multiple disabilities

Person-centered planning is becoming a popular means of designing supports for people with disabilities. However, very little research evaluating person-centered planning exists. We evaluated the degree to which items and activities reported to be preferred in person-centered plans represented accurate preferences based on how individuals responded when presented with the items and activities. Person-centered planning meetings were conducted with 4 individuals with profound multiple disabilities to develop preference maps and to identify leisure-related preferences. A sample of the reported preferences in the plans was then systematically assessed by observing each participant's approach and avoidance responses to the items and activities. Of the sampled items and activities reported to be preferred in the plans, 42% represented moderate preferences based on the latter assessment process and 33% represented strong preferences. With 2 participants, several preferences identified in the plans were nonpreferred items and activities based on the preference assessments, and some were frequently avoided. These results suggested that although person-centered plans may identify some accurate preferences for people with profound multiple disabilities, this approach should be used cautiously. Results also suggested that such plans should be supplemented with systematic preference assessments to ensure the accuracy of identified preferences. Future research areas focus on evaluating other aspects of person-centered planning.     

Equity of access: Adaptive technology

In this age of information technology, it is morally imperative that equal access to information via computer systems be afforded to people with disabilities. This paper addresses the problems that computer technology poses for students with disabilities and discusses what is needed to ensure equity of access. particularly in a university environment. A version of this paper was presented at ETHICOMP98, the Fourth International Conference on Ethical Issues of Information Technology. March 25–27, 1998, Erasmus University, the Netherlands. Frances S. Grodzinsky is a Professor of Computer Science and Information Technology. Her area of research is computer ethics.     

The relationship between predictability and problem behavior for students with severe disabilities

Two single-case studies were conducted to examine the extent to which signaled (predictable) and unsignaled (unpredictable) events were associated with changes in the level of problem behavior during instruction. Two students with moderate-to-severe intellectual disabilities and autism participated in the study. Each student was nominated for the study based on a teacher's report that problem behaviors were much more likely when novel or unsignaled events occurred. Functional assessments were conducted with each student and the specific predictability features (signals) associated with low and high levels of problem behavior were identified. Multi-element and reversal designs were employed to examine the extent to which increased predictability was associated with reduced problem behavior. Results supported the use of functional assessment procedures to determine whether signals that provide information about the content, duration, timing, and/or consequences of future events could reduce problem behaviors.     

Grandparents' support for families who have children with disabilities

This study was designed to assess the levels of support provided by grandparents for families who had grandchildren with disabilities. A questionnaire survey of parents was used to assess the levels of practical, financial and emotional support they received from the children's grandparents. Parents were also questioned about their satisfaction with this support. Overall levels of support were low but most parents were nevertheless generally satisfied with the support they had received. However, a quarter of the grandparents were considered to have added to the parent's problems and almost a third of the parents expressed a wish for more support from grandparents.     

EFFECTS OF SETTING EVENTS ON THE PROBLEM BEHAVIOR OF STUDENTS WITH SEVERE DISABILITIES

Two studies analyzed the effects of preceding setting events on the problem behavior of students with severe disabilities. Using ABAB withdrawal designs, the occurrence versus nonoccurrence of preceding setting events was analyzed in relation to the frequency of problem behavior. Data were collected throughout a student's school day, with interventions focusing upon the elimination of setting events that occurred before school. The results indicate that (a) the occurrence of preceding setting events was related to higher frequencies of problem behavior and (b) interventions designed to eliminate preceding setting events were consistently associated with low frequencies of problem behavior.     

Community-referenced leisure skill clusters for adolescents with multiple disabilities

We evaluated the effectiveness of a training package used to teach student-selected community-referenced leisure skill clusters — ordering a pizza-to-go and renting a video from a local vendor — to two adolescents with multiple disabilities. The adolescents were taught the leisure skills (e.g., ordering the pizza) as well as related behaviors necessary to perform those leisure skills (e.g., using a phone, interacting with the delivery person, cutting and serving pizza, cleaning up). The students were taught functional skill clusters, problem-solving skills, and assistance-seeking skills. Training consisted of didactic instruction, feedback, a least intrusive prompting procedure for incorrect responses, and verbal praise and natural consequences for correct responses. Simulation training was conducted at school and in vivotraining was conducted in the local community. A multiple baseline design demonstrated the controlling effects of treatment. Also, follow-up probes conducted up to five months after treatment showed these students maintained treatment gains. Applied issues related to the efficiency of the training package, general and specific skills training, and factors influencing skill maintenance are discussed.     

Commentary on Meehl

The classic article by Meehl (1978) raises fundamental issues regarding the viability of theorizing in the “soft” psychological sciences and the weakness of statistical significance testing in appraising the validity of the field’s theories. These concerns are as valid today as they were a quarter of a century ago. Despite the lack of clear progress that has been made in terms of theory building, I raise several examples from developmental psychopathology research that reveal progress in the field’s conceptual and methodologic rigor, including the testing of genotype by environment interactions, the statistical advances driving longitudinal research, and the use of intervention and prevention trials to address questions of etiology and mechanisms related to psychopathology.     

学习不良儿童的元认知研究

元认知指有关认知过程的知识和对认知过程的调节。在学习不良领域,元认知理论无论在对学生内部加工问题的理解上还是在开发帮助学生获得学业成功的教学方法实践中,都具有重要意义。本文在回顾了这一领域的研究之后,指出一些基本问题仍未得到解决,未来的研究应围绕这些问题的解决展开,进一步揭示学习不良儿童元认知机制,整合认知、动机和情感因素,致力于将学习不良学生培养成自我调节的学习者。