iPost: Circadian rhythms and affective dysfunction

PsyPost: Circadian rhythms: Their role and dysfunction in affective disorder: All humans are synchronised to the rhythmic l.
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iPost: Computer based cognitive assessment

NeuropathLrng: Computer based test to assess cognitive skills in Down syndrome adolescents developed

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iPost: PEBS Neuroethics Roundup from JHU Guest Blogger

PEBS Neuroethics Roundup from JHU Guest Blogger

Neuroethics & Law Blog

Last Edition's Most Popular Article: A Psychophysiological Investigation of Moral Judgment after Ventromedial Prefrontal Damage, Journal of Cognitive Neuroscience In the Popular Press: Can preschoolers be depressed? The New York Times Inside Neurosurgery's Rise, The New York Times Your Circadian...

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iPost: Temporal processing and handwriting

Neural models of temporally organized behaviors: Handwriting production and working memoryStephen Grossberg...

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iPost: New Special Issue on Alzheimer's Disease

New Special Issue on Alzheimer's Disease

Neuroscience News from Elsevier

Edited by Mene Pangalos and Andy Randall, for Neuropharmacology. Volume 59, Issues 4-5, Pages 219-366 (September-October 2010).

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iPost: Test your attentional focus: is multi-tasking a good thing?

Story at SHARP BRAINS link below

http://www.sharpbrains.com/blog/2010/08/26/test-your-attentional-focus-is-multi-tasking-a-good-thing/?utm_source=rss&utm_medium=rss&utm_campaign=test-your-attentional-focus-is-multi-tasking-a-good-thing

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iPost: Brain wiring and decision making

PsychNews: Brain Wiring Key to Quick Decisions, Finds Study

http://tinyurl.com/2f734jk

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iPost: PEBS Neuroethics Roundup from JHU Guest Blogger

PEBS Neuroethics Roundup from JHU Guest Blogger

Neuroethics & Law Blog

Last Edition's Most Popular Article: Diagnosis, diagnosis, diagnosis: towards DSM-5, Journal of Mental Health In the Popular Press: Looking This Way and That, and Learning to Adapt to the World, The New York Times Researchers have rallied round a promising...

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iPost: The five dimensions of an autistic brain

Story at link below

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iPost: Why working memory matters in the knowledge age: study

SHARP BRAINS post below

http://www.sharpbrains.com/blog/2010/08/21/why-working-memory-matters-in-the-knowledge-age-study/?utm_source=rss&utm_medium=rss&utm_campaign=why-working-memory-matters-in-the-knowledge-age-study

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iPost: Auditory selective attention deficits found as problem for some military trainees

Interesting story on potential predictive validity of WJ III Auditory Discrimination test in the military. Story at link below.

[Conflict of interest note: I am a coauthor and have a royalty interest in the WJIII battery. ]

http://www.army.mil/-news/2010/08/13/43678-army-researchers-discover-auditory-processing-deficit-in-some-68d-students/

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iPost: Neurotech Reports News Updates

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Begin forwarded message:

From: info@neurotechreports.com
Date: August 20, 2010 7:51:51 AM CDT
To: iap@earthlink.net
Subject: Neurotech Reports News Updates

Research bytes 8-18-2010: IQ brain clock and sex/handedness differences and impact on aphasis

Sidiropoulos, K., Ackermann, H., Wannke, M., & Hertrich, I. (2010). Temporal processing capabilities in repetition conduction aphasia. Brain and Cognition, 73(3), 194-202.

This study investigates the temporal resolution capacities of the central-auditory system in a subject (NP) suffering from repetition conduction aphasia. More specifically, the patient was asked to detect brief gaps between two stretches of broadband noise (gap detection task) and to evaluate the duration of two biphasic (WN-3) continuous noise elements, starting with white noise (WN) followed by 3 kHz bandpass-filtered noise (duration discrimination task). During the gap detection task, the two portions of each stimulus were either identical (“intra-channel condition”) or differed (“inter-channel condition”) in the spectral characteristics of the leading and trailing acoustic segments. NP did not exhibit any deficits in the intra-channel condition of the gap detection task, indicating intact auditory temporal resolution across intervals of 1–3 ms. By contrast, the inter-channel condition yielded increased threshold values. Based upon the “multiple-looks” model of central-auditory processing, this profile points at a defective integration window operating across a few tens of milliseconds – a temporal range associated with critical features of the acoustic speech signal such as voice onset time and formant transitions. Additionally, NP was found impaired during a duration discrimination task addressing longer integration windows (ca. 150 ms). Concerning speech, this latter time domain approximately corresponds to the duration of stationary segmental units such as fricatives and long vowels. On the basis of our results we suggest, that the patient’s auditory timing deficits in non-speech tasks may account, at least partially, for his impairments in speech processing.

Article Outline

1. Introduction
2. Materials and methods

2.1. Case history
2.2. Intra-channel gap detection task
2.3. Inter-channel gap detection task
2.4. Duration discrimination task

3. Results

3.1. Intra-channel gap detection task
3.2. Inter-channel gap detection
3.3. Duration discrimination task

4. Discussion
Acknowledgements
References

Rammsayer, T. & Troche, S. (2010, in press) Sex differences in the processing of temporal information in the sub-second range.  Personality and Individual Differences

Processing of temporal information in the sub-second range appears to be controlled by an automatic timing system. The present study examined sex-related differences in this temporal domain. For this purpose, 132 male and 144 female participants ranging in age from 18 to 39 years completed five different psychophysical timing tasks. Reliably better timing performance in males compared to females could be shown for temporal discrimination of empty intervals and rhythm perception. Males’ better performance on temporal discrimination of filled intervals and temporal-order judgment just failed to reach the 5%-level of statistical significance. No indication of a sex-related difference was found for temporal generalisation. Findings are consistent with the notion of a slightly more efficient automatic timing system in males compared to females. Furthermore, with tasks requiring temporal integration across a series of sensory events, a more holistic processing strategy applied by males may also contribute to their performance advantage.

Article Outline

1. Introduction
2. Method

2.1. Participants
2.2. Intelligence test
2.3. Psychophysical timing tasks

2.3.1. Duration discrimination
2.3.2. Temporal-discrimination tasks
2.3.3. Temporal-generalisation task
2.3.4. Temporal-order judgment (TOJ)
2.3.5. Rhythm perception

3. Results
4. Discussion
Acknowledgements
References

Westfall, J., Jasper, J. & Zelmanova (2010) Differences in time perception as a function of strength of handedness.  Personality and Individual Differences, 49, 629–633

Research has established that objective measures of time rarely have a perfect correlation with subjective judgments of time. Given that proper time perception appears to depend upon access to right-hemisphere processing (e.g., Harrington, Haaland, & Knight, 1998), the present paper investigates the link between strength of handedness and subjective time judgments. In two distinctive time- associated decision-making tasks, results indicated that mixed-handers (individuals who use their non-dominant hand for at least a few activities), perceived time differently than strong-handers (individuals who use one hand predominantly). These findings signify a link between strength of handedness and different levels of interhemispheric communication, consistent with previous handedness literature, and suggest that researchers studying time perception or problems involving the perception of time should incorporate measures of handedness strength.
Article Outline

1. Introduction

1.1. Strength of handedness and interhemispheric communication

2. Method

2.1. Subjective time perception task
2.2. Delay discounting task
2.3. Edinburgh Handedness Inventory (EHI)

3. Results

3.1. Subjective time perception task
3.2. Delay discounting task

4. Discussion
Acknowledgements
References

Technorati Tags: Psychology, school psychology, educational psychology, cognitive psychology, neuropsychology, neurosciences, neurotechnology, neurology, brain, brain function, cognitive abilities, intelligence, IQ brain clock, brain timing, mental timekeeping, brain rhythms, rhythm perception, brain synchrony, brain synchronization, neural synchrony, neural synchronization, brain clock, brain injury, stroke rehabilitation, gender differences

iPost: The Brain in Science Education: What Should Everyone Learn?

Story at SHARP BRAINS link below

http://www.sharpbrains.com/blog/2010/08/17/the-brain-in-science-education-what-should-everyone-learn/?utm_source=rss&utm_medium=rss&utm_campaign=the-brain-in-science-education-what-should-everyone-learn

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iPost: Developmental Cognitive Neuroscience

Developmental Cognitive Neuroscience

Neuroscience News from Elsevier

A new journal for cognitive, affective and social developmental neuroscience. Now accepting submissions.

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Off task: Happiness is an optimized hard drive :)

PEBS NeuroethicsiiPost: Roundup from JHU Guest Blogger

PEBS Neuroethics Roundup from JHU Guest Blogger

Neuroethics & Law Blog

Last Edition's Most Popular Article: Deep Brain Stimulation Podcast, Journal of Neurosurgery Podcast Archive In the Popular Press: Fighting Crime by Reading Minds, Time Brain works more like internet than 'top down' company, BBC News Potential Found in a New...

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iPost: Cerebrospinal fluid examination may preduct risk of Alzheimer's disease

Story at BIJ blog link below

http://braininjury.blogs.com/braininjury/2010/08/cerebrospinal-fluid-examination-may-preduct-risk-of-alzheimers-disease.html

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Brain plasticity and FACEBOOK

iPost: Computerized cognitive training may help reduce falls among elderly

Visit SHARP BRAINS link below for story

http://www.sharpbrains.com/blog/2010/08/12/computerized-cognitive-training-may-help-reduce-falls-among-elderly/?utm_source=rss&utm_medium=rss&utm_campaign=computerized-cognitive-training-may-help-reduce-falls-among-elderly

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iPost: PEBS Neuroethics Roundup from JHU Guest Blogger

At link below

http://kolber.typepad.com/ethics_law_blog/2010/08/pebs-neuroethics-roundup-from-jhu-guest-blogger-1.html

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Institute for Applied Psychometrics (IAP) internet resourcs (web, blogs, etc.) updated/revised

This blog, as well as my other two professional blogs, are activities of the Institute for Applied Psychometrics (IAP).  I'm pleased to announce that this past week I finally found the time to update/revise the IAP web page. 

Aside from updating content, the major revision was the integration and cross-linking of the IAP web page with my three professional blogs.  The web page serves more as the "mother" host of major static material while the three blogs are the IAP's mechanisms (along with Facebook, LinkedIN and Twitter---page links that are now also available at the revised web page) for immediate, dynamic presentation of material.  Collectively all of these internet portals work together to meet the goals of IAP (as outlined below).  The sources are now better integrated via the latest web page revision.  Enjoy

You can access the IAP web page via three methods:

• Traditional web-based navigational link system
  
• A single outline-based Table of Contents
• A visual-graphic mind map based organized linked system (my favorite)
  

Enjoy

The Institute for Applied Psychometrics (IAP) llc is a private research organization, founded by Kevin McGrew, devoted to the application of educational, psychological, measurement and statistical procedures to issues and problems in psychology, education, and human exceptionalities/disabilities.  The goal of IAP is to provide a bridge between psychological, measurement, and statistical theory/methods and applied practice in psychology, education and law.

IAP has particular research interests in: (a) theories and measurement of human intelligence, personal competence and adaptive behavior, (b) the application of psychological and educational measurement principles and techniques to the development and interpretation of psychological and educational assessment instruments, (c) the Cattell-Horn-Carroll (CHC) Theory of Cognitive Abilities, (d) narrowing the theory-practice gap in educational and psychological assessment, (c) the influence of non-cognitive (conative) characteristics on learning and human performance, (d) psychological assessment practices in the identification and classification of individuals with intellectual and learning disabilities and other exceptionalities, (e) the application of emerging neurotechnologies to learning and cognitive performance, and (f) psychometric issues related to the identification of individuals with intellectual disabilities in Atkins MR/ID death penalty cases.  The practical application of psychometrics to educational, psychological and legal problems is a unique IAP focus.

IAP has conducted research and provided consultation and training on:

• Human ability measurement as per the Cattell-Horn-Carroll (CHC; Gf-Gc) Theory of Cognitive Abilities.
• Achievement and cognitive ability test development and interpretation.
• The practical application of IRT, multivariate statistics, and structural equation modeling (SEM) methods to educational and psychological issues and problems.
• Research, development, and validation of models of human abilities and competence, particularly in the areas of multiple intelligence's, academic and cognitive skill development, personal competence, adaptive behavior, and community adjustment.
• The development and measurement of educational and community outcomes for individuals with disabilities.
• Secondary analysis of large-scale national databases.
• The development and improvement of educational assessment practices for students with disabilities.
• The development of strong programs of construct validity for educational and psychological assessment and measurement methods.
• Recognizing the importance on non-cognitive (e.g., self-regulated learning strategies; self- efficacy; etc) student characteristics in academic learning.
• Psychometric issues surrounding intelligence testing in federal Atkins MR/ID death penalty cases.
• Scientific advice to neurotechnology companies (i.e., Interactive Metronome).
• Education regarding applied psychometric topics.

Technorati Tags: psychology, educational psychology, school psychology, neuropsychology, clinical psychology, criminal psychology, special education, disabilities, MR, ID, LD, psychological testing, psychometircs, applied psychometrics, IQs Corner, IQ Brain Clock, ICDP, death penalty, Atkins MR death penalty, ABA, criminal justice, University of Minnesota, Woodcock-Munoz Foundation, IQ, IQ tests, intelligence testing, WJ III, Woodcock Johnson, EWOKS

iPost: Let's Help Brainline build its new web site dedicated to brain injury in children

http://braininjury.blogs.com/braininjury/2010/08/lets-help-brainline-build-its-new-web-site-dedicated-to-brain-injury-in-children.html

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iPost: Needed: funding for innovative research on slowing cognitive decline via cognitive training

Story at link below

http://www.sharpbrains.com/blog/2010/08/09/needed-funding-for-innovative-research-on-slowing-cognitive-decline-via-cognitive-training/?utm_source=rss&utm_medium=rss&utm_campaign=needed-funding-for-innovative-research-on-slowing-cognitive-decline-via-cognitive-training

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iPost: Long-term effects of neurofeedback treatment for ADHD

SHARP BRAINS post at link below

http://www.sharpbrains.com/blog/2010/08/05/long-term-effects-of-neurofeedback-treatment-for-adhd/?utm_source=rss&utm_medium=rss&utm_campaign=long-term-effects-of-neurofeedback-treatment-for-adhd

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iPost: PEBS Neuroethics roundup

PEBS (always full of great info) Neuroethics Roundup at link below

http://kolber.typepad.com/ethics_law_blog/2010/08/pebs-neuroethics-roundup-from-jhu-guest-blogger.html

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iPost: Neurodiversity

http://bit.ly/b2lwOQ+TheMouseTrap+%28The+Mouse+Trap%29&utm_content=Bloglines

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