Resistance to the impact of interruptions during multitasking by healthy adults and dysexecutive patients

Two experiments (one with healthy adult volunteers and the other with controls and dysexecutive patients) assessed the impact of interruptions on a novel test of multitasking. The test involved switching repeatedly between four tasks (block construction, bead threading, paper folding, alphabetical searching) over a 10 min period. In Experiment 1, there were four groups of 20 healthy participants. One group attempted multitasking with no interruption, a second group was interrupted early in the test, a third group late in the test and a fourth group was interrupted both early and late. Interruption involved carrying out a fifth, unexpected task for a period of 1 min before returning to the four main tasks. There was no difference in multitasking performance between the groups. In Experiment 2 the participants were seven dysexecutive patients and 14 age-matched controls. A repeated measures approach was employed to assess the impact of two interruptions (early and late) for both groups. Contrary to predictions, the patients as well as controls were resistant to the effects of interruptions, despite their clearly impaired multitasking performance. These results suggest that the ability to deal with interruptions may be separable from the ability to organise and execute multiple tasks within a limited time frame.     

A microswitch program to foster simple foot and leg movements in adult wheelchair users with multiple disabilities

This study assessed a microswitch program to foster simple foot and leg movements in 2 adult wheelchair users with multiple disabilities. The participants' mood (indices of happiness) was recorded throughout the study. Data showed that participants rapidly increased the target foot and leg movements and maintained those movements during the course of the study, which lasted about 4.5 months. With regard to indices of happiness, 1 participant showed a fairly modest increase during the intervention while the other participant showed a substantial increase. Implications of the findings are discussed.     

Stimulus Equivalence and The Blocking Effect

The Psychological Record - The purpose of this experiment was to examine the blocking effect within the context of a stimulus equivalence paradigm. Ten subjects were provided with a prior history...     

Nuclear waste, secrecy and the mass media

Invited media scholars and journalists examine the general issue of nuclear waste, risk and the sicentific promises that were made, but not kept, about safe disposal. The mass media uncovered and reported on nuclear waste problems at Rocky Flats in Colorado and Hanford in Washington. Two environmental journalists review efforts to expose problems at these sites, how secrecy hampered reporting, and the effects of media coverage on nearby residents. An environmental communications scholar evaluates media coverage, the role of the U.S. Department of Energy, and the impact of secrecy on public risk perceptions and attitudes toward government nuclear waste policies.     

Autism: beyond “theory of mind”

The theory of mind account of autism has been remarkably successful in making specific predictions about the impairments in socialization, imagination and communication shown by people with autism. It cannot, however, explain either the non-triad features of autism, or earlier experimental findings of abnormal assets and deficits on non-social tasks. These unexplained aspects of autism, and the existence of autistic individuals who consistently pass false belief tasks, suggest that it may be necessary to postulate an additional cognitive abnormality. One possible abnormality - weak central coherence - is discussed, and preliminary evidence for this theory is presented.     

Dimensions of health‐related dispositions in elderly people: relationships with health behaviour and personality traits

The principal aim of this study was to examine a health‐related disposition construct in elderly Italians by explorative factor analysis of the Multidimensional Health Questionnaire. The questionnaire had a two‐factor structure. The first factor was loaded by cognitive variables such as Health‐Efficacy, Health Control, Optimism, etc.; it predicted compliance with self‐rating health seeking behaviours and it was correlated with personality traits such as Emotional Stability and the Lie scale. The second factor comprised emotional dispositions including Health Anxiety, Health Depression, Health Preoccupation, etc. and it was negatively associated with Conscientiousness and Energy. Interesting results emerged for sex by age differences in both health factors. Moreover, men and women showed different correlation patterns between the health factors and the Five Factor Model. Copyright © 2000 John Wiley & Sons, Ltd.     

Assisted ambulation and activity for restless or passive persons with profound multiple disabilities: assessing performance and preferences

Two adults with profound multiple disabilities and restlessness or passivity were exposed to two occupational conditions involving (a) robot‐assisted ambulation and activity in a fairly large area and (b) unassisted ambulation and activity in a small area. The aim was to examine the participants' performance (independent activities, ambulation, and challenging behavior) in the two conditions and their possible preferences between those conditions. Data showed that the participants had higher percentages of independent activities, higher percentages of ambulation, and somewhat lower percentages of challenging behavior in the condition with the robot. The participants also seemed to prefer this condition over the one without the robot. Implications of the findings were discussed. Copyright © 2000 John Wiley & Sons, Ltd.     

Improving accepting and giving compliments with individuals with developmental disabilities

Individuals with developmental disabilities, such as autism spectrum disorder, typically exhibit conversation skill deficits, with two prevailing deficits including giving and accepting compliments. The current study used an individualized approach to assess and teach accepting and giving compliments specific to performance, possession, and appearance with three adolescents and young adults with developmental disabilities. We taught these skills using behavioral skills training and prompting during conversations utilizing a multiple-baseline design across participants. We also observed generalization and treatment extension of the participants' skills in conversations with adults not associated with teaching and in the absence of any teaching procedures. The results support the efficacy of the procedures used toward improving giving and accepting compliments within the context of a conversation. We discuss considerations to improve the social acceptability of and refinements to the teaching procedures and acquired skills.     

Promoting fluency of performance during morning dressing by two persons with multiple disabilities

This study investigated the possibility of promoting fluency of performance, i.e., a performance independent of caregiver's guidance and without serious interruptions, during morning dressing in two adults with multiple disabilities. The intervention program relied on the use of assistive technology including optic and pressure sensors to monitor the participants' task responding and tape players to present preferred stimuli in relation to such responding, as well as messages of encouragement. Analysis showed that the intervention program was effective with both participants. In fact, they became capable of performing the dressing sequence with only occasional guidance from research assistants, and the time they required for dressing dropped significantly from baseline levels. Implications of the results are discussed.