The School and Community Study: Characteristics of Students Who Have Emotional and Behavioral Disabilities Served in Restructuring Public Schools

We present selected initial results from a study investigating the effects of school restructuring and reform activities on outcomes for students who are identified as having serious emotional and behavioral disabilities. A review of the literature revealed six key areas of reform for investigation: accountability, governance, parent involvement, includedness, curriculum and instruction, and pro-social discipline. Ten schools (five elementary, two K-8, one middle, and two high schools) actively engaged in school restructuring and reform efforts were selected to participate in the study, and their status related to these six areas is presented. Characteristics of the students identified as having emotional and behavioral disabilities and served in these schools in special education settings (N = 116) are described. Results from the administration of standardized assessments revealed that these students have significant levels of emotional and behavioral disabilities that impair their functioning at school and at home. Further, school staff are providing the majority of counseling services to these students during the school day, with non-school professionals providing services to 25% of the students.     

Gestural imitation and limb apraxia in corticobasal degeneration

Limb apraxia is a common symptom of corticobasal degeneration (CBD). While previous research has shown that individuals with CBD have difficulty imitating transitive (tool-use actions) and intransitive non-representational gestures (nonsense actions), intransitive representational gestures (actions without a tool) have not been examined. In the current study, eight individuals with CBD and eight age-matched healthy adults performed transitive, intransitive representational and intransitive non-representational gestures to imitation. The results indicated that compared to controls, individuals with CBD were significantly less accurate in the imitation of transitive and intransitive non-representational gestures but showed no deficits for the imitation of intransitive representational gestures. This advantage for intransitive representational gestures was thought to be due to fewer demands being placed on the analysis of visual-gestural information or the translation of this information into movement when imitating these gestures. These findings speak to the importance of context and the representation of gestures in memory in gesture performance.     

Pantomime and imitation of limb gestures in relation to the severity of Alzheimer's disease

The present study was designed to investigate the relationship between performance of limb gestures and the severity of Alzheimer's disease (A.D.). Apraxia tends to occur at later stages of A.D., and the severity of apraxia has been shown to vary with the severity of A.D. dementia. Participants were 19 mild (including 9 with no cognitive impairment and 10 with mild impairment) and 18 moderate A.D. patients as well as 25 controls and they were asked to pantomime (P) or imitate (both concurrent (CI) and delayed (DI)), eight transitive gestures to assess praxis performance. Results indicated that the moderate patients performed less accurately than mild and non-impaired patients, and that across all groups, the imitation conditions were performed less accurately than pantomime, relative to controls. Correlational analyses revealed that MMSE scores were correlated with all three performance conditions suggesting that impaired praxis performance may relate to more global impairment. Finally, a frequency analysis was conducted to examine whether A.D. patients showed patterns of apraxia as described in Roy's model (1996). Results indicated that A.D. patients showed greatest impairment on pattern 7 (deficits in P, DI, and CI), reflecting late-stage gesture production, with a greater frequency of moderate patients exhibiting each apraxic pattern.     

MMPI-2 validity scale characteristics in a correctional sample

The current study investigated the proportion of content-nonresponsive and content-responsive faking Minnesota Multiphasic Personality Inventory-2 (MMPI-2) protocols in a state corrections sample. Participants were 51,486 inmates who completed the MMPI-2 at the time they entered the Ohio Department of Rehabilitation and Correction system. Overall, approximately 79% of the study participants produced valid profiles. Of the entire study sample, 11.3% produced content-nonresponsive profiles, and 9.4% produced content-responsive faking profiles. African Americans produced a higher proportion of content-nonresponsive profiles than Caucasians, and women were slightly more likely than men to produce content-responsive faking profiles. Differences in level of education between African Americans and Caucasians did not account for the disparity in content-nonresponsive profiles. Implications for current practice and future research are discussed.     

Blockade of NR2B-Containing NMDA Receptors Prevents BDNF Enhancement of Glutamatergic Transmission in Hippocampal Neurons

Application of brain-derived neurotrophic factor (BDNF) to hippocampal neurons has profound effects on glutamatergic synaptic transmission. Both pre- and postsynaptic actions have been identified that depend on the age and type of preparation. To understand the nature of this diversity, we have begun to examine the mechanisms of BDNF action in cultured dissociated embryonic hippocampal neurons. Whole-cell patch-clamp recording during iontophoretic application of glutamate revealed that BDNF doubled the amplitude of induced inward current. Coexposure to BDNF and the NMDA receptor antagonist AP-5 markedly reduced, but did not entirely prevent, the increase in current. Coexposure to BDNF and ifenprodil, an NR2B subunit antagonist, reproduced the response observed with AP-5, suggesting BDNF primarily enhanced activity of NR2B-containing NMDA receptors with a lesser effect on non-NMDA receptors. Protein kinase involvement was confirmed with the broad spectrum inhibitor staurosporine, which prevented the response to BDNF. PKCI19-31 and H-89, selective antagonists of PKC and PKA, had no effect on the response to BDNF, whereas autocamtide-2-related inhibitory peptide, an antagonist of CaM kinase II, reduced response magnitude by 60%. These results demonstrate the predominant role of a specific NMDA receptor subtype in BDNF modulation of hippocampal synaptic transmission.     

MESA: A portable multi-energy sensor array for low-frequency electromagnetic field fluctuations

The study of the relation between electromagnetic fields and various psychological phenomena would be enhanced by the measurement and correlation of time series over multiple energy bands. The paper discusses the design and implementation of a computerized multi-energy sensor array (MESA) that detects and records low-frequency energy fluctuations. The current implementation of MESA focuses on the measurement of magnetic fields, infrared and visible light frequencies, and indices of seismic activity. However, MESA is sufficiently flexible to accommodate the measurement of other variables as well, and it can be configured to suit applications in laboratory and field settings.     

Smooth pursuit eye movements in normal and dyslexic children

This paper describes a detailed study of horizontal eye movements associated with visual tracking of a smoothly moving target. Essentially all children, even at target velocities as low as 5 degrees/sec., show some saccadic eye movements superimposed on smooth tracking movements. Detailed analysis of pursuit eye-movements from a group of 26 poor readers and 34 normal controls (8 to 13 yr.) showed that about 25% of poor readers have an abnormally raised saccadic component in smooth pursuit. This suggests that studies of eye movements during tracking of smoothly moving targets at low velocity, combined with a quantitative approach to data analysis, may be useful for early detection of a significant proportion of poor-reading children.     

Clues to aural discrimination

Five measures of the items of the Multiple-Choice Intelligibility Test were obtained: apparent aural similarity of the four words available to a listener on hearing a stimulus, interconsonantal differences among the prevocalic portions of these words, phonemic discrepancies among these words, distinctive feature differences among these words, and the pooled discrimination score of the four words that were available to the responder on hearing the stimulus. The last score was made the target in a multiple correlation problem, and the relative contribution, combined and separately, of the four remaining measures to the target measure was determined. These four measures accounted for approximately 45% of the variance among the scores of discrimination. The strongest contributors were apparent aural similarity of the available responses and the phonemic discrepancy among the available responses.