Jan A Richard

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OBJECTIVE Examine age group effects and sex differences by applying a comprehensive computerized battery of identical behavioral measures linked to brain systems in youths that were already genotyped. Such information is needed to incorporate behavioral data as neuropsychological "biomarkers" in large-scale genomic studies. METHOD We developed and applied(More)
There is increased need for efficient computerized methods to collect reliable data on a range of cognitive domains that can be linked to specific brain systems. Such need arises in functional neuroimaging studies, where individual differences in cognitive performance are variables of interest or serve as confounds. In genetic studies of complex behavior,(More)
The Raven's standard progressive matrices (RSPM) is a 60-item test for measuring abstract reasoning, considered a nonverbal estimate of fluid intelligence, and often included in clinical assessment batteries and research on patients with cognitive deficits. The goal was to develop and apply a predictive model approach to reduce the number of items necessary(More)
A large body of literature has documented facial emotion perception impairments in schizophrenia. More recently, emotion perception has been investigated in persons at genetic and clinical high-risk for psychosis. This study compared emotion perception abilities in groups of young persons with schizophrenia, clinical high-risk, genetic risk and healthy(More)
OBJECTIVE Studies of emotion recognition abilities in schizophrenia show greater impairment for non-Caucasians with schizophrenia compared with Caucasians. These studies, however, included only Caucasian faces as stimuli. There is evidence from healthy individuals for a performance disadvantage on face memory and emotion recognition when processing faces(More)
BACKGROUND Psychotic symptoms, also termed psychotic-like experiences (PLEs) in the absence of psychotic disorder, are common in adolescents and are associated with increased risk of schizophrenia-spectrum illness in adulthood. At the same time, schizophrenia is associated with deficits in social cognition, with deficits particularly documented in facial(More)
The relationship between both the quantity and perceived quality of social support and suicidal risk was examined in a sample of 50 adolescents whose ages ranged from 16 to 20 years. A multiple regression analysis was performed, using scores from Cull and Gill's 1983 Suicide Probability Scale as the criterion measure along with the predictor variables of(More)
OBJECTIVES Impaired facial emotion expression is central to schizophrenia. Extensive work has quantified these differences, but it remains unclear how patient expressions are perceived by their healthy peers and other non-trained individuals. This study examined how static facial expressions of posed and evoked emotions of patients and controls are(More)
OBJECTIVE Computerized neurocognitive batteries based on advanced behavioral neuroscience methods are increasingly used in large-scale clinical and genomic studies. Favorable construct validity in younger schizophrenia patients has been reported, but not in older patients. New variables afforded by computerized assessments were used to clarify(More)