Subtyping obsessive-compulsive disorder: A taxometric analysis

Obsessive-compulsive disorder (OCD) is a heterogeneous condition comprising multiple symptoms. Researchers have identified OCD subtypes using a range of symptom-based research methods, including factor and cluster analyses and examination of differential treatment response. These methods can be challenged on the grounds that they fail to demonstrate the existence of discrete taxonomic entities. Furthermore, no study has examined subtyping on the basis of cognitive characteristics. In the present study, the categorical vs. dimensional status of 6 possible subtypes of OCD was examined using taxometric methods. Three potential cognitive subtypes (based on high levels of responsibility/threat estimation, perfectionism/certainty, and importance/control of thoughts) and 3 potential symptomatic subtypes (based on elevated levels of contamination obsessions and cleaning compulsions, checking, and obsessionality) were examined using the MAXEIG and MAMBAC procedures in a sample of 404 diagnosed cases of OCD. Findings favored dimensional models of the potential responsibility, perfectionism, checking, and contamination subtypes, but offered qualified support for taxonic models of the importance/control of thoughts and obsessional subtypes. Implications for the subclassification of OCD are discussed.     

An instrumented method for assessment and remediation of stuttering: A single-subject case study

A single-subject experimental design was used to investigate the feasibility of applying non-invasive laboratory instrumentation for examining speech physiology to assessment and biofeedback-based remediation of stuttering. Physiologic assessment facilitated the development of behavioral goals directed at changing respiratory and phonatory behaviors for this subject. Visual biofeedback therapy produced reduction in respiratory discontinuities and increased phonatory continuity, concomitant with reduced perceivable molar dysfluency. Methods used in this case illustrate a variety of options and problems related to clinical use of instrumentation. Results suggest that signals which represent respiratory, phonatory, and articulatory physiologic events may be clinically practical for evaluating and altering perceivable dysfluency.     

Very Young Child Well-being in Military Families: A Snapshot

Since the September 11th attacks on the U.S., more than 2 million children have experienced parental deployment during their early years, with potentially lasting impact. When a parent is deployed, a number of factors may affect the well-being of the service member and his/her family. One parental factor—posttraumatic stress disorder or distress—might be particularly powerful in its effect on young children and the family system. We analyzed baseline data from an intervention development project which focused on supporting military families with very young children during post-deployment. The purpose of this research is to understand the relationships between parental mental health status, parenting stress, couple functioning, and young child well-being. The effects of mental health status of home-front and service member parents and the role of couple functioning on parent–child interactions and behavioral problems of young children were examined in a sample of military families during the post-deployment period. Findings suggest that service member posttraumatic stress symptoms are associated with higher parental report of child behavior problems. Higher quality of the couple relationship appears to lessen the impact of parental posttraumatic stress but is not related to parent perceptions of child behavior concerns. Implications for future research with military families are discussed.     

Personal Growth and Meaning in Life Among First-Time Mothers and Grandmothers

This cross-sectional study examined personal growth and meaning in life among mothers and grandmothers who recently went through major transitions in a woman’s life. It investigated the contribution of the internal resources of perception of self (self-esteem) and perceived characteristics of the situation (cognitive appraisal of threat, challenge, and self-efficacy) and the external resource of perceived social support, as well as two background variables: age, and frequency of meetings between mothers and grandmothers. Participants were 152 first-time mothers 6–24?months after delivery, and their own mothers who were first-time grandmothers (n?=?152). The results showed differential contributions to meaning in life and personal growth in the two generations, indicating that the proposed variables can indeed explain growth and meaning in life in these life stages. They reveal not only the similarities and differences between the response of mothers and grandmothers to these parallel life transitions, but also how information about one generation may help explain the response of the other. The different patterns of associations which emerged for growth and meaning in life are also discussed.     

Reliability of the Go/No Go Association Task

The Go/No Go Association Task (GNAT; Nosek & Banaji, 2001) is an implicit measure with broad application in social psychology. It has several conceptual strengths to recommend it over other implicit methods, but the belief that it has poor reliability coupled with the absence of a method for calculating this important psychometric property has hindered its wider acceptance and use. Using data obtained from six GNAT studies covering a wide range of content areas, Study 1 compares the properties of different methods for estimating reliability of the GNAT. Study 2 demonstrates a resampling procedure to investigate how reliability varies as a function of block length. Study 1 shows that with appropriately chosen stimuli the GNAT can be a very reliable measure, while Study 2 indicates that as an empirical rule of thumb 50 to 80 trials per block should yield adequate to very good reliability. However, researchers are urged to calculate their own reliability coefficients, to this end we discuss GNAT design issues and provide procedures for calculating GNAT reliability which we hope will enhance the utility of the GNAT as a measure and promote its use in studying implicit cognition.     

Dopaminergic and prefrontal contributions to reward-based learning and outcome monitoring during child development and aging

In many instances, children and older adults show similar difficulties in reward-based learning and outcome monitoring. These impairments are most pronounced in situations in which reward is uncertain (e.g., probabilistic reward schedules) and if outcome information is ambiguous (e.g., the relative value of outcomes has to be learned). Furthermore, whereas children show a greater sensitivity to external outcome information, older adults focus less on a rapid differentiation of rewarding outcomes. In this article, we review evidence for the idea that these phenomenologically similar impairments in learning and outcome monitoring in children and older adults can be attributed to deficits in different underlying neurophysiological mechanisms. We propose that in older adults learning impairments are the result of reduced dopaminergic projections to the ventromedial prefrontal cortex, which lead to less differentiated representations of reward value. In contrast, in children, impairments in learning can be primarily attributed to deficits in executive control, which may be due to a protracted development of the dorsal medial and lateral prefrontal cortices. We think that this framework maps well onto recent neurophysiological models of reward processing and is plausible from a broader developmental perspective.     

Suicide among foreign residents of Japan

The suicide rate of Koreans living in Japan is twice as high as that of Koreans in South Korea. Reasons for this high suicide rate are discussed, including effects of economic crises and discrimination.     

The Effect of Parents’ Literacy Skills and Children’s Preliteracy Skills on the Risk of Dyslexia

The combination of investigating child and family characteristics sheds light on the constellation of risk factors that can ultimately lead to dyslexia. This family-risk study examines plausible preschool risk factors and their specificity. Participants (N?=?196, 42 % girls) included familial risk (FR) children with and without dyslexia in Grade 3 and controls. First, we found impairments in phonological awareness, rapid naming, and letter knowledge in FR kindergartners with later dyslexia, and mild phonological-awareness deficits in FR kindergartners without subsequent dyslexia. These skills were better predictors of reading than arithmetic, except for rapid naming. Second, the literacy environment at home was comparable among groups. Third, having a dyslexic parent and literacy abilities of the non-dyslexic parent related to offspring risk of dyslexia. Parental literacy abilities might be viewed as indicators of offspring’s liability for literacy difficulties, since parents provide offspring with genetic and environmental endowment. We propose an intergenerational multiple deficit model in which both parents confer cognitive risks.