Background Startle inhibition by weak prepulses (PPI) is studied to understand the biology
of information processing in schizophrenia patients and healthy comparison subjects (HCS). …

One of the most difficult problems in cluster analysis is identifying the number of groups in a
dataset. Most previously suggested approaches to this problem are either somewhat ad hoc …

The Consortium on the Genetics of Schizophrenia Family Study (COGS-1) has previously
reported our efforts to characterize the genetic architecture of 12 primary endophenotypes for …

We develop a flexible model-based procedure for clustering functional data. The technique
can be applied to all types of curve data but is particularly useful when individuals are …

The elements of a multivariate dataset are often curves rather than single points. Functional
principal components can be used to describe the modes of variation of such curves. If one …

Social cognitive impairments are consistently reported in schizophrenia and are associated
with functional outcome. We currently know very little about whether these impairments are …

This study evaluated the longitudinal stability and functional correlates of social cognition
during the early course of schizophrenia. Fifty-five first-episode schizophrenia patients …

The MATRICS Psychometric and Standardization Study was conducted as a final stage in
the development of the MATRICS Consensus Cognitive Battery (MCCB). The study included …

… Vismara PhD a , Catherine A. Sugar PhD f , Gerhard Hellemann PhD f , Fiona Whelan MS
f , Meagan Talbott … Sugar and Hellemann served as the statistical experts for this research. …

Objective Suicide is a leading cause of death. New data indicate alarming increases in suicide
death rates, yet no treatments with replicated efficacy or effectiveness exist for youths with …