Exploring the interface of neurobehaviorally linked personality dimensions and personality organization in borderline personality disorder: the Multidimensional Personality Questionnaire and Inventory of Personality Organization.

Advances in our understanding of complex psychopathology will likely benefit from approaches to mind, brain, and behavior that seek to (a) specify those general neurobehavioral processes underpinning pathology and (b) bridge to other process-based models of psychopathology at different levels of analysis. Well-defined neurobehavioral processes (e.g., positive emotionality, negative emotionality, nonaffective constraint, fear, affiliation) and their phenotypic indicators are firmly rooted in neural substrates (Depue & Lenzenweger, 2005). Furthermore, long-studied psychodynamic psychological processes, such as identity diffusion, primitive psychological defensive functioning, and reality-testing dimensions, are important to understanding personality pathology (Kernberg & Caligor, 2005). Both theoretical perspectives view the cardinal processes involved in the determination of personality disorders (PDs) as relevant across existing PD diagnostic entities. The authors examined relationships between psychometric indicators of these two sets of processes, the neurobehavioral and the psychodynamic, in a well-characterized sample of individuals with borderline personality disorder (BPD; N = 92). In bridging these two levels of analysis, the authors found that the alienation, aggression, and absorption constructs represent important linkages to the psychodynamic processes, especially primitive psychological defenses and reality-testing impairments. These results are discussed in terms of their potential for joining these two domains of analysis--a neurobehaviorally informed view of personality and the psychodynamic--in efforts to (a) foster a process-oriented approach, (b) resolve heterogeneity, and (c) facilitate identification of endophenotypes in BPD. The heuristic value of this approach for understanding other forms of psychopathology is also discussed.

Learning potential as a predictor of readiness for psychosocial rehabilitation in schizophrenia.

It has been suggested that learning potential (LP), a patient's ability to benefit from training and practice, may mediate the relationship between cognition and functional outcome. Aims of this study were to (1) assess whether performance on a verbal memory-based measure of LP is associated with readiness for psychosocial rehabilitation; and (2) assess whether explicit cognitive training in memory strategies improves task performance beyond any implicit learning of organizational strategies that occurs with repeated exposure to to-be-learned material. Fifty outpatients with schizophrenia or schizoaffective disorder were administered three different versions of a list-learning test, the California Verbal Learning Test (CVLT-II). Some patients also received explicit training in semantic memory strategies before administration of the second word list. Based on performance across the three assessments, participants were categorized as "learners", "high scorers", and "non-learners". Participants were also administered the Micromodule Learning Test (MMLT), a measure that predicts performance in manualized skill training groups. LP categorization was associated with performance on the MMLT. High scorers performed better than the other two groups, and as found in earlier studies, education level was associated with performance for the learners. Explicit semantic clustering training was associated with increases in the use of the trained strategy.

Insight and recovery from psychosis in chronic schizophrenia and schizoaffective disorder patients.

Impaired insight is an important contributing factor to poor treatment response and outcome in schizophrenia. Prior studies have attempted to identify the illness characteristics that underlie these deficits, with conflicting results regarding associations with symptoms and neurocognitive deficits. These inconsistencies may be a function of a number of methodological issues, which were addressed in this study. In a prospective, longitudinal study, 50 individuals with schizophrenia or schizoaffective disorder underwent baseline assessments upon discharge from an acute inpatient unit, and again at a 6-month follow-up. Unawareness of positive and negative symptoms were studied separately, with analyses focusing on changes in insight over time as well as associations with disorganized symptoms, depression, and card sorting deficits. Subjects showed greater insight for negative symptoms than for positive symptoms. Insight for positive symptoms improved only slightly over the follow-up period, while negative symptom awareness did not change. Insight for negative symptoms showed modest associations with card sorting deficits, while awareness for positive symptoms showed stronger associations with thought disorder, depression, and card sorting deficits. Awareness for positive symptoms in schizophrenia may be distinct from awareness of negative symptoms. Clinicians should also be aware of the multidetermined nature of impaired insight, and future research should aim to isolate distinct mechanisms that give rise to these deficits.