Parkinson’s disease disrupts both automatic and controlled processing of action verbs

The problem of how word meaning is processed in the brain has been a topic of intense investigation in cognitive neuroscience. While considerable correlational evidence exists for the involvement of sensory-motor systems in conceptual processing, it is still unclear whether they play a causal role. We investigated this issue by comparing the performance of patients with Parkinson’s disease (PD) with that of age-matched controls when processing action and abstract verbs. To examine the effects of task demands, we used tasks in which semantic demands were either implicit (lexical decision and priming) or explicit (semantic similarity judgment). In both tasks, PD patients’ performance was selectively impaired for action verbs (relative to controls), indicating that the motor system plays a more central role in the processing of action verbs than in the processing of abstract verbs. These results argue for a causal role of sensory-motor systems in semantic processing.     

Want information? How mood and performance perceptions alter the perceived value of information and influence information-seeking behaviors

Currently, it is not well understood when positive and negative moods would encourage and discourage the process of identifying and seeking out valuable information. Building upon the mood-as-a-resource hypothesis and the mood-behavior-model, this project reconciles mixed findings by investigating and finding support for the hypothesis that positive moods encourage seeking instrumental information when performance is perceived to be weak; whereas negative moods encourage it when performance is perceived to be strong. These effects are due to mood influencing the perceived value (i.e. instrumentality) of information and cannot be explained by arguing that mood altered the affective costs/benefits associated with the information. Overall, these results indicate that positive moods may help individuals acquire information to resolve an existing problem, whereas negative moods may help individuals acquire information when there is no apparent problem.     

Teaching early braille literacy skills within a stimulus equivalence paradigm to children with degenerative visual impairments

Despite the need for braille literacy, there has been little attempt to systematically evaluate braille-instruction programs. The current study evaluated an instructive procedure for teaching early braille-reading skills with 4 school-aged children with degenerative visual impairments. Following a series of pretests, braille instruction involved providing a sample braille letter and teaching the selection of the corresponding printed letter from a comparison array. Concomitant with increases in the accuracy of this skill, we assessed and captured the formation of equivalence classes through tests of symmetry and transitivity among the printed letters, the corresponding braille letters, and their spoken names.     

Level of performance accuracy for core Halstead-Reitan measures by pooling normal controls from published studies: comparison with existing norms in a clinical sample

The Halstead-Reitan Neuropsychological Test Battery offers a multifaceted, empirically supported interpretive framework for neuropsychological assessment founded upon raw scores referenced to a brain-damaged sample. Complementary approaches have used T scores from normal samples often composed of community volunteers or medical patients, augmented by regression. By pooling normal controls of all types from published studies, a sample large enough for stratification of core Halstead-Reitan measures by age and education was obtained (206 studies, N1 = 17,980). Comparisons based on T scores with two published normative systems in an outpatient sample produced a continuum: liberal norms for medical patients, intermediate pooled values from many types of subjects, and stringent norms for community volunteers. Features recommending clinical application of pooled norms include enhanced accuracy in clinical situations precluding a full battery, few empty cells or inversions for nonelderly subjects, and a screening application based upon a very large Trail Making Test sample (Trails B: n > 14,000).     

Patterns of Community Violence Exposure During Adolescence

This study examined cross-sectional and longitudinal patterns of community violence exposure and malleable predictors of these exposure patterns among a community sample of 543 urban African American early adolescents (45.3% female; mean age: 11.76). In each of grades 6, 7, and 8, latent class analyses revealed two patterns of community violence exposure: high exposure and low exposure. For the majority of participants, experiences with community violence were similar at each grade. Impulsive behavior and depressive symptoms distinguished adolescents in the high and low exposure classes in grade 6. Implications for interventions to prevent community violence exposure are discussed.     

Mothers as a Resource in Times of Stress: Interactive Contributions of Socialization of Coping and Stress to Youth Psychopathology

This study examined the hypothesis that maternal socialization of coping would make a differential contribution to youth depression and externalizing psychopathology depending on youths’ level of exposure to life stress. A sample of 155 youth (M age = 12.41, SD = 1.21) and their maternal caregivers completed semi-structured interviews and questionnaires in a two-wave longitudinal study over a 1-year period. Results provided evidence for two types of socialization × stress interactions—an amplification-effects model and a differential-effects model. In the context of interpersonal stress, findings supported an amplification-effects model wherein the risk and protective effects of engagement and disengagement socialization of coping emerged in youth exposed to high but not mild levels of stress. In the context of noninterpersonal stress, findings supported a differential-effects model wherein disengagement socialization of coping contributed to heightened risk among youth exposed to high stress but dampened risk among youth exposed to mild stress. This research identifies maternal socialization of coping as a noteworthy contributor to risk for youth psychopathology, and highlights the need to consider parenting × environment interactions when investigating parenting processes related to youth psychopathology.     

The Haven Mother's House Modified Therapeutic Community: Meeting the gap in infant mental health services for pregnant and parenting mothers with drug addiction

The specialized needs of pregnant and parenting women in the treatment of drug addiction must not be underestimated. The impact of substance abuse on developmental outcomes for young infants and children supports the notion that attention to the parent–child relationship is a critical aspect of addiction treatment for this population. As such, the standard of care appears to be shifting from separating mothers and young children while the mother completes addiction treatment to women residing with their children while in treatment and receiving concurrent addiction treatment and parenting education. While parenting education is important, it may not provide the needed relationship intervention to address the myriad of issues often present for female recovering addicts and their children. This article describes the evolution and workings of a program for integrating infant mental health practice into a long‐term residential treatment community for pregnant and parenting women with addiction. The principles and structure of the modified therapeutic community are described, as are the ways in which infant mental health practice have been effectively integrated and incorporated into the addiction treatment philosophy. A case example is provided, and clinical implications are discussed.     

A socioemotional intervention in a Latin American orphanage

A pilot intervention that emphasized training and technical assistance to promote warm, sensitive, and responsive one‐on‐one caregiver–child interactions primarily during feeding and bathing/changing was implemented using regular staff in a depressed orphanage for children birth to approximately 8 years of age in Latin America. Despite a variety of unanticipated irregularities in the implementation of the intervention, many beyond the researchers' control, ward environments improved; caregivers displayed more warm, sensitive, and responsive interactions with children; and children improved an average of 13.5 developmental quotient (DQ) points after 4+ months' exposure to the completed intervention. Furthermore, 82% of the children had DQs greater than 70 before the intervention, but only 27.8% did so afterward. Although the training for all caregivers was aimed at children birth to 3 years, the number of different caregivers was reduced, and technical assistance was provided only to caregivers serving children less than 3 years, younger and older children (3–8 years) improved approximately the same amount. However, children who were transitioned from a younger to an older ward during the intervention improved less than did children who remained in either a younger or an older ward, the first evidence suggesting that the common orphanage practice of periodically graduating children from one homogeneous age group to another may impede their development. The study is consistent with others that have shown that orphanages can be changed, and increases primarily in warm, sensitive, responsive caregiver–child interactions can produce improvements in children's development.     

Spatial attention-related modulation of the N170 by backward masked fearful faces

Facial expressions are a basic form of non-verbal communication that convey important social information to others. The relevancy of this information is highlighted by findings that backward masked facial expressions facilitate spatial attention. This attention effect appears to be mediated through a neural network consisting of the amygdala, anterior cingulate, and visual cortex. However, a direct investigation of the neural time course associated with orienting to such stimuli has yet to be performed. In the current investigation, a backward masked fearful face dot-probe task was performed while ERPs were recorded. Reaction time results suggest that spatial attention is captured by backward masked fearful faces and attention is focused at the location of the fear stimulus. Masked right visual field fearful faces enhanced the N170 amplitudes of contralateral occipito-temporal electrodes. The rapid contralateral N170 enhancement was positively correlated with participants’ behavioral index of spatial attention. Thus, backward masked fearful face-elicited spatial attention facilitates behavior and modulates the early stage of facial processing reflected by the N170.