L. Humphrey

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Virtual Reality technology offers new options for the study, assessment, and rehabilitation of cognitive/functional processes. This paper describes the initiation of a research program aimed at developing a virtual " classroom " for the assessment of ADHD. The system uses a head mounted display, head, hand, and leg tracking, and is laptop deliverable. The(More)
OBJECTIVE The purpose of the study was to estimate the prevalence of attention-deficit/hyperactivity disorder (ADHD) and its clinical characteristics in the Northern Finland Birth Cohort 1986. METHOD A general population Northern Finland Birth Cohort 1986 of 9,432 children followed prospectively from the early fetal period was surveyed at adolescence(More)
The Virtual Environments Laboratory at the University of Southern California (USC) has initiated a research program aimed at developing virtual reality (VR) technology applications for the study, assessment, and rehabilitation of cognitive processes. This technology is seen to offer many advantages for these aims. The status of two ongoing VR projects will(More)
OBJECTIVE The present study examined cognitive functioning in a population sample of adolescents with and without attention-deficit/hyperactivity disorder (ADHD) from the Northern Finland Birth Cohort 1986. METHOD The sample consisted of 457 adolescents ages 16 to 18 who were assessed using a battery of cognitive tasks. Performance according to diagnostic(More)
Neuropsychological research has primarily focused on identification of malingerers through specialized tests designed for this purpose. Little attention has been given to the degree to which traditional clinical measures differentiate between malingerers and non-malingerers. This study examined the neuropsychological performance of 81 subjects who had a(More)
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