Saturday, March 05, 2011

Educational neuroscience: Mind Brain and Education




I just stumbled upon a new journal that appears worthy to monitor. It is a journal dealing with the field of educational neuroscience--Mind Brain and Education. Below are a select sample of article abstracts.


Blair, C. (2010). Going Down to the Crossroads: Neuroendocrinology, Developmental Psychobiology, and Prospects for Research at the Intersection of Neuroscience and Education. Mind Brain and Education, 4(4), 182-187.

The relation of stress hormones and activity in stress response systems to the development of aspects of cognition and behavior important for educational achievement and attainment is examined from the perspective of the developmental psychobiological model. It is proposed that research in neuroendocrinology supports three general conclusions, namely (1) that there is a neuroscientifically definable optimal level of stress arousal in children against which various curricula and teaching and learning activities can be examined; (2) that consideration of the time course of stress arousal indicates that optimal levels of stress arousal are temporally limited and can be matched to specific instructional activities; and (3) that alterations to stress response systems through processes of allostasis and allostatic load, particularly for children facing early psychosocial disadvantage, can impair the flexible regulation of stress response systems needed for effective learning in school.



Fischer, K. W., Goswami, U., & Geake, J. (2010). The Future of Educational Neuroscience. Mind Brain and Education, 4(2), 68-80

The primary goal of the emerging field of educational neuroscience and the broader movement called Mind, Brain, and Education is to join biology with cognitive science, development, and education so that education can be grounded more solidly in research on learning and teaching. To avoid misdirection, the growing worldwide movement needs to avoid the many myths and distortions in popular conceptions of brain and genetics. It should instead focus on integrating research with practice to create useful evidence that illuminates the brain and genetic bases as well as social and cultural influences on learning and teaching. Scientists and educators need to collaborate to build a strong research foundation for analyzing the “black box” of biological and cognitive processes that underpin learning.


Newcombe, N. S., & Frick, A. (2010). Early Education for Spatial Intelligence: Why, What, and How. Mind Brain and Education, 4(3), 102-111

Spatial representation and thinking have evolutionary importance for any mobile organism. In addition, they help reasoning in domains that are not obviously spatial, for example, through the use of graphs and diagrams. This article reviews the literature suggesting that mental spatial transformation abilities, while present in some precursory form in infants, toddlers, and preschool children, also undergo considerable development and show important individual differences, which are malleable. These findings provide the basis for thinking about how to promote spatial thinking in preschools, at home, and in children's play. Integrating spatial content into formal and informal instruction could not only improve spatial functioning in general but also reduce differences related to gender and socioeconomic status that may impede full participation in a technological society.


Sylvan, L. J., & Christodoulou, J. A. (2010). Understanding the Role of Neuroscience in Brain Based Products: A Guide for Educators and Consumers. Mind Brain and Education, 4(1), 1-7.

This article describes an experiment utilizing a research and development strategy to design and implement an innovative school for the future. The development of Cramim Elementary School was a joint effort of researchers from Tel-Aviv University and the staff of the school. The design stage involved constructing a new theoretical framework that defined school as a knowledge system, based on the state of the art, interdisciplinary study of the nature of humans, and the nature of knowledge. A new school design emerged based on this theoretical framework and the school was opened in 1995. Action research followed for 8 years and the results indicated that the school has emerged as a learning organization and successfully integrated knowledge technologies into the learning processes of both students and teachers. Differentiated teaching strategy resulted in a significant increase in achievements (+11% in maths, literacy, and science; +10% in literacy in kindergarten; persistence of higher achievement in junior high schools). The greatest beneficiaries were low-achieving students. As the school is a highly complex system, individual variables contributing to the increased effectiveness could not be isolated. The article's conclusion is that experimental schools are a productive strategy to bring about changes, but unless these schools are part and parcel of the culture of the mainstream education system culture, they are destined to remain isolated cases.


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FYiPOST: Galton's Bayesian Machine

Stephen Stigler has a cool piece on a machine that Francis Galton built in 1877 that calculated a posterior distribution from a prior and a likelihood function. Galton's originality continues to astound.

Here is Stigler:

StigFigure1 The machine is reproduced in Figure 1 from the original publication. It depicts the fundamental calculation of Bayesian inference: the determination of a posterior distribution from a prior distribution and a likelihood function. Look carefully at the picture—notice it shows the upper portion as three-dimensional, with a glass front and a depth of about four inches. There are cardboard dividers to keep the beads from settling into a flat pattern, and the drawing exaggerates the smoothness of the heap from left to right, something like a normal curve. We could think of the top layer as showing the prior distribution p(θ) as a population of beads representing, say, potential values for θ, from low (left) to high (right)....

...the beads fall to the next lower level. On that second level, you can see what is intended to be a vertical screen, or wall, that is close to the glass front at both the left and the right, but recedes to the rear in the middle.

...The way the machine works its magic is that those beads to the front of the screen are retained as shown; those falling behind are rejected and discarded. (You might think of this stage as doing rejection sampling from the upper stage.)

...The final stage turns this into a standard histogram: The second support platform is removed by pulling to the right on its knob, and the beads fall to a slanted platform immediately below, rolling then to the lowest level, where the depth is again uniform—about one inch deep from the glass in front. This simply rescales the retained beads... the magic of the machine is that this lowest level is proportional to the posterior distribution!

Hat tip: The Endeavour.






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Wednesday, March 02, 2011

To read or not to read: A FYiPOST: meta-analysis of print exposure from infancy to early adulthood.

This research synthesis examines whether the association between print exposure and components of reading grows stronger across development. We meta-analyzed 99 studies (N = 7,669) that focused on leisure time reading of (a) preschoolers and kindergartners, (b) children attending Grades 1–12, and (c) college and university students. For all measures in the outcome domains of reading comprehension and technical reading and spelling, moderate to strong correlations with print exposure were found. The outcomes support an upward spiral of causality: Children who are more proficient in comprehension and technical reading and spelling skills read more; because of more print exposure, their comprehension and technical reading and spelling skills improved more with each year of education. For example, in preschool and kindergarten print exposure explained 12% of the variance in oral language skills, in primary school 13%, in middle school 19%, in high school 30%, and in college and university 34%. Moderate associations of print exposure with academic achievement indicate that frequent readers are more successful students. Interestingly, poor readers also appear to benefit from independent leisure time reading. We conclude that shared book reading to preconventional readers may be part of a continuum of out-of-school reading experiences that facilitate children's language, reading, and spelling achievement throughout their development. (PsycINFO Database Record (c) 2011 APA, all rights reserved)





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Book nook Islands of Genius: The Bountiful Mind of the Autistic, Acquired, and Sudden Savent

APA review of Islands of Genius: The Bountiful Mind of the Autistic, Acquired, and Sudden Savant. Double click on image to enlarge




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Differential Abilities Scales-II IQ test: CHC explanation from publisher

I picked up a nice glossily CHC and DAS-II brochure at the NASP conference last week. It explains, as per the DAS-II author and publisher, how they view the interpretation of the Differential Abilities Scales, Second Edition, from the consensus psychometric model of intelligence (CHC theory).

If anyone can refer me to an on-line PDF copy from the publisher, I will switch out the link to direct traffic to that page. I could not find one when I searched for it.

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Tuesday, March 01, 2011

Research byte: Where do tactile (Gh) abilities fit in the CHC model of intelligence: Research article




Neuropsychologists often administer tactile and sensory-motor measures during clinical and forensic assessments. Where do these measures fit within the consensus model of intelligence (CHC theory)? Recent article by Scott Decker provides some guidance. Double click on image to enlarge.


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Research byte: File under Gh domain in CHC theory of intelligence




File under the Gh domain in CHC theory


Kalagher, H., & Jones, S. S. (2011). Developmental change in young children's use of haptic information in a visual task: The role of hand movements. Journal of Experimental Child Psychology, 108(2), 293-307.

Abstract

Preschoolers who explore objects haptically often fail to recognize those objects in subsequent visual tests. This suggests that children may represent qualitatively different information in vision and haptics and/or that children’s haptic perception may be poor. In this study, 72 children (2½–5 years of age) and 20 adults explored unfamiliar objects either haptically or visually and then chose a visual match from among three test objects, each matching the exemplar on one perceptual dimension. All age groups chose shape-based matches after visual exploration. Both 5-year-olds and adults also chose shape-based matches after haptic exploration, but younger children did not match consistently in this condition. Certain hand movements performed by children during haptic exploration reliably predicted shape-based matches but occurred at very low frequencies. Thus, younger children’s difficulties with haptic-to-visual information transfer appeared to stem from their failure to use their hands to obtain reliable haptic information about objects.


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FYiPOST: Complimentary WAIS-IV®, WMS®-IV, and ACS Training Opportunities




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Take advantage of upcoming WAIS®-IV, WMS®-IV, and ACS training opportunities!

Pearson is pleased to provide a variety of webinars and case studies to assist you in understanding Advanced Clinical Solutions (ACS) for WAIS-IV and WMS-IV, which was designed to enhance the clinical utility and expand the construct coverage of these respected tests.

Complimentary Web-Based Seminars
Attend a complimentary webinar on the ACS. Register for those that best meet your needs:

  • Overview: The presenter will provide a brief overview of the rationale for developing the ACS for WAIS-IV and WMS-IV and a description of the additional assessments and scores offered.
  • TBI Evaluations: The presenter will discuss referral questions psychologists need to answer when conducting evaluations for a possible diagnosis of TBI and demonstrate how data from the WAIS-IV, the WMS-IV, and ACS can help answer specific questions such as those related to premorbid functioning, serial assessment, social cognition, and executive function.
  • Geriatric Assessments: The presenter will discuss referral questions psychologists need to answer when conducting evaluations for a possible diagnosis of dementia and demonstrate how data from the WAIS-IV, the WMS-IV, and ACS can help answer specific questions such as those related to premorbid functioning, progressive and long-term decline in cognitive functioning, serial assessment, and instrumental activities of daily living.
  • Forensic Evaluations (Custody & Capital Punishment): The presenter will address how the
    WAIS-IV, WMS-IV, and ACS may be used in forensic applications such as child custody and capital punishment evaluations. Specific information to be covered includes: how to develop an appropriate battery and best practices in interpretation and reporting. Case study information will be provided.
To Register
Click on the links below to register for the webinars. After you register you will receive an email confirming your attendance, along with instructions and passwords on how to join the Webinar presentation. Please note the start time is listed in the Eastern Time Zone.
March Webinars
July Webinars
  Overview of Advanced Clinical Solutions
Date:
Friday, March 4, 2011
Time: 3:00â€"4:30pm (Eastern)
Presenter: Gloria Maccow, PhD
Register here
  Using WAIS-IV, WMS-IV, and ACS in Forensic Evaluations (Custody & Capital Punishment)
Date:
Tuesday, July 12, 2011
Time:
12:00â€"1:30pm (Eastern)
Presenter: Amy Gabel, PhD
Register here
May Webinars August Webinars
  Using WAIS-IV, WMS-IV, and ACS for Evaluation of TBI
Date: Wednesday, May 11, 2011
Time: 3:00â€"4:30pm (Eastern)
Presenter: Gloria Maccow, PhD
Register here
  Overview of Advanced Clinical Solutions
Date: Thursday, August 11, 2011
Time: 3:00â€"4:30pm (Eastern)
Presenter: Gloria Maccow, PhD
Register here
June Webinars
October Webinars
  Using WAIS-IV, WMS-IV, and ACS for Geriatric Assessment
Date:
Thursday, June 2, 2011
Time: 3:00â€"4:30pm (Eastern)
Presenter: Gloria Maccow, PhD
Register here
  Using WAIS-IV, WMS-IV, and ACS for
Evaluation of TBI
Date:
Wednesday, October 19, 2011
Time:
3:00â€"4:30pm (Eastern)
Presenter: Gloria Maccow, PhD
Register here

CE credits are not provided for these brief webinars.

To view previously recorded ACS webinars, please click here.

For a complete list of webinars available from Pearson click here.

ACS Case Studies Available
Click the links below to download FREE case studies.

Suboptimal Effort
Demographic Adjustment
Pre-morbid Predictions Serial Assessment

To learn more about Advanced Clinical Solutions for WAIS-IV and WMS-IV,
visit PsychCorp.com/ACS.


  800.627.7271 | | PsychCorp.com
 

Copyright © 2011 Pearson Education or its affiliate(s). All rights reserved. ACS, WASI, WMS, Pearson, design for Psi, and PsychCorp are trademarks, in the U.S. and/or other countries, of Pearson Education, Inc. or its affiliate(s).
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Research byte: Phonological awareness deficit related to math fact retrieval problems




DeSmedt, B., & Boets, B. (2010). Phonological processing and arithmetic fact retrieval: Evidence from developmental dyslexia. Neuropsychologia, 48(14), 3973-3981.

Abstract

The triple-code model, cognitive neuroimaging and developmental behavioral data suggest a specific association between phonological processing and arithmetic fact retrieval. Accordingly, individuals with deficits in phonological processing, such as individuals with developmental dyslexia, are expected to show difficulties in arithmetic fact retrieval. The present study tested this proposal in 25 adults with developmental dyslexia and 25 matched controls by examining strategy use during single-digit multiplication and subtraction and its associations with phonological processing. Findings revealed that individuals with dyslexia retrieved fewer arithmetic facts from memory and were less efficient in doing so. At the same time, they showed deficits in phonological processing. Phonological processing, particularly phonological awareness, was related to arithmetic fact retrieval. This association was especially prominent in multiplication, indicating that fact retrieval in multiplication rather than subtraction is mediated by phonological processes. These data provide ground for future neuroimaging studies, who should examine the neural overlap between phonological processing and multiplication fact retrieval in the same sample of participants.


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Monday, February 28, 2011

Does the WJ III battery measure the same abilities in US and Canada? New report

The following report has just been posted at WMF Press. Click here to access the WMF page with a link to a copy of the report, which is under the WMF Press Bulletin section. Double click on images to enlarge.








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Research bytes: Innovative behavioral research methods research articles




Block, C. K., & Baldwin, C. L. (2010). Cloze probability and completion norms for 498 sentences: Behavioral and neural validation using event-related potentials. Behavior Research Methods, 42(3), 665-670.

Three decades after their publication, Bloom and Fischler' s (1980) sentence completion norms continue to demonstrate widespread utility. The aim of the present study was to extend this contribution by expanding the existing database of high-constraint, high cloze probability sentences. Using the criteria established by Bloom and Fischler, we constructed 398 new sentences and presented these along with 100 sentences from their original list to be normed using a sample of 400 participants. Of the 498 sentences presented, 400 met criteria for high cloze probability—that is, .67 or higher probability of being completed by a specific single word. Of these, 321 sentences were from the new set and an additional 79 were from Bloom and Fischler' s set. A high degree of correspondence was observed between responses obtained by Bloom and Fischler for their high-constraint set. A second experiment utilized an N400 event-related potential paradigm to provide further validation of the contextual constraint for the newly generated set. As expected, N400 amplitude was greater for sentences that violated contextual expectancy by ending in a word other than the newly established completion norm. Sentence completion norms are frequently used in cognitive research, and this larger database of high cloze probability sentences is expected to be of benefit to the research community for many years to come. The full set of stimuli and sentence completion norms from this study may be downloaded from http://brm.psychonomic-journals.org/ content/supplemental.



Buchanan, T., Heffernan, T. M., Parrott, A. C., Ling, J., Rodgers, J., & Scholey, A. B. (2010). A short self-report measure of problems with executive function suitable for administration via the Internet. Behavior Research Methods, 42(3), 709-714

This article describes a short self-report measure of problems with executive function designed for use in Internet-mediated research. In Study 1, participants completed the online measure (Webexec) using a browser but under laboratory conditions. They also completed a paper self-report measure of executive problems (the Dysexecutive Questionnaire; DEX) and three objective tasks involving executive function: reverse digit span, semantic fluency (unconstrained), and semantic fluency (constrained). Webexec scores correlated positively with the DEX and negatively with the three executive tasks. Further evidence of construct validity came from Study 2, in which Webexec scores correlated positively with both use of cannabis and prospective memory problems reported in an online drug questionnaire. Webexec thus appears suitable for online research with normal populations.


ESCOLANO-PÉREZ , E., & SastreRiba, S. (2010). Early infant cognitive assessment: Validity of an instrument. Behavior Research Methods, 42(3), 759-767.

The present study represents a contribution to the assessment of infant cognitive development by presenting a valid instrument for observing the development of logical reasoning and executive function during the second year of life—key processes in the construction of human knowledge. The instrument constructed, called ELEDA (Early Logical and Executive Development Assessment), was a combined or mixed observation instrument composed of field formats and category systems. Its validity was calculated using generalizability theory, which enables different sources of error affecting a behavioral measurement to be analyzed jointly. The need for valid early cognitive assessment instruments such as the one in the present article is evident, since the sooner assess-ment is performed, the sooner action can be taken, thus optimizing the results.


Freeman, J. B., & Ambady, N. (2010). MouseTracker: Software for studying real-time mental processing using a computer mouse-tracking method. Behavior Research Methods, 42(1), 226-241.

In the present article, we present a software package, MouseTracker, that allows researchers to use a computer mouse-tracking method for assessing real-time processing in psychological tasks. By recording the streaming x-, y-coordinates of the computer mouse while participants move the mouse into one of multiple response al-ternatives, motor dynamics of the hand can reveal the time course of mental processes. MouseTracker provides researchers with fine-grained information about the real-time evolution of participant responses by sampling 60–75 times/sec the online competition between multiple response alternatives. MouseTracker allows research-ers to develop and run experiments and subsequently analyze mouse trajectories in a user-interactive, graphics-based environment. Experiments may incorporate images, letter strings, and sounds. Mouse trajectories can be processed, averaged, visualized, and explored, and measures of spatial attraction/curvature, complexity, velocity, and acceleration can be computed. We describe the software and the method, and we provide details on mouse trajectory analysis. We validate the software by demonstrating the accuracy and reliability of its trajectory and reaction time data. The latest version of MouseTracker is freely available at http://mousetracker.jbfreeman.net.


Li, X. R., Liang, Z., Kleiner, M., & Lu, Z. L. (2010). RTbox: A device for highly accurate response time measurements. Behavior Research Methods, 42(1), 212-225.

Although computer keyboards and mice are frequently used in measuring response times (RTs), the accuracy of these measurements is quite low. Specialized RT collection devices must be used to obtain more accurate measurements. However, all the existing devices have some shortcomings. We have developed and implemented a new, commercially available device, the RTbox, for highly accurate RT measurements. The RTbox has its own microprocessor and high-resolution clock. It can record the identities and timing of button events with high ac-curacy, unaffected by potential timing uncertainty or biases during data transmission and processing in the host computer. It stores button events until the host computer chooses to retrieve them. The asynchronous storage greatly simplifies the design of user programs. The RTbox can also receive and record external signals as trig-gers and can measure RTs with respect to external events. The internal clock of the RTbox can be synchronized with the computer clock, so the device can be used without external triggers. A simple USB connection is suf-ficient to integrate the RTbox with any standard computer and operating system.



LorenzoSeva, U., Ferrando, P. J., & Chico, E. (2010). Two SPSS programs for interpreting multiple regression results. Behavior Research Methods, 42(1), 29-35.

When multiple regression is used in explanation-oriented designs, it is very important to determine both the usefulness of the predictor variables and their relative importance. Standardized regression coefficients are rou-tinely provided by commercial programs. However, they generally function rather poorly as indicators of rela-tive importance, especially in the presence of substantially correlated predictors. We provide two user-friendly SPSS programs that implement currently recommended techniques and recent developments for assessing the relevance of the predictors. The programs also allow the user to take into account the effects of measurement error. The first program, MIMR-Corr.sps, uses a correlation matrix as input, whereas the second program, MIMR-Raw.sps, uses the raw data and computes bootstrap confidence intervals of different statistics. The SPSS syntax, a short manual, and data files related to this article are available as supplemental materials from http:// brm.psychonomic-journals.org/content/supplemental.


Magis, D., Beland, S., Tuerlinckx, F., & DeBoeck, P. (2010). A general framework and an R package for the detection of dichotomous differential item functioning. Behavior Research Methods, 42(3), 847-862.

Differential item functioning (DIF) is an important issue of interest in psychometrics and educational mea-surement. Several methods have been proposed in recent decades for identifying items that function differently between two or more groups of examinees. Starting from a framework for classifying DIF detection methods and from a comparative overview of the most traditional methods, an R package for nine methods, called difR, is presented. The commands and options are briefly described, and the package is illustrated through the analysis of a data set on verbal aggression.



McCarthy, P. M., & Jarvis, S. (2010). MTLD, vocd-D, and HD-D: A validation study of sophisticated approaches to lexical diversity assessment. Behavior Research Methods, 42(2), 381-392.

The main purpose of this study was to examine the validity of the approach to lexical diversity assessment known as the measure of textual lexical diversity (MTLD). The index for this approach is calculated as the mean length of word strings that maintain a criterion level of lexical variation. To validate the MTLD approach, we compared it against the performances of the primary competing indices in the field, which include vocd-D, TTR, Maas, Yule' s K, and an HD-D index derived directly from the hypergeometric distribution function. The comparisons involved assessments of convergent validity, divergent validity, internal validity, and incremental validity. The results of our assessments of these indices across two separate corpora suggest three major find-ings. First, MTLD performs well with respect to all four types of validity and is, in fact, the only index not found to vary as a function of text length. Second, HD-D is a viable alternative to the vocd-D standard. And third, three of the indices—MTLD, vocd-D (or HD-D), and Maas—appear to capture unique lexical information. We conclude by advising researchers to consider using MTLD, vocd-D (or HD-D), and Maas in their studies, rather than any single index, noting that lexical diversity can be assessed in many ways and each approach may be informative as to the construct under investigation.


Solway, A., Geller, A. S., Sederberg, P. B., & Kahana, M. J. (2010). PyParse: A semiautomated system for scoring spoken recall data. Behavior Research Methods, 42(1), 141-147.

Studies of human memory often generate data on the sequence and timing of recalled items, but scoring such data using conventional methods is difficult or impossible. We describe a Python-based semiautomated system that greatly simplifies this task. This software, called PyParse, can easily be used in conjunction with many common experiment authoring systems. Scored data is output in a simple ASCII format and can be accessed with the programming language of choice, allowing for the identification of features such as correct responses, prior-list intrusions, extra-list intrusions, and repetitions


Willander, J., & Baraldi, S. (2010). Development of a new Clarity of Auditory Imagery Scale. Behavior Research Methods, 42(3), 785-790.

In the psychological study of auditory imagery, instruments for measuring vividness or clarity have existed for some time. The present article argues that existing scales are ambiguous, in that clarity and vividness of auditory imagery are addressed simultaneously, and that empirical validations of those scales suffer from inad-equate methods. The aim of the present study was to develop a new psychometric scale, the Clarity of Auditory Imagery Scale, measuring individual differences in clarity of auditory imagery. Drawing on previous literature, 16 items were generated, forming an initial item pool that was presented to 212 respondents. The hypothesized single dimensionality inherent in the data was confirmed using Velicer' s (1976) minimum average partial test and parallel analysis. Also, data were factor analyzed, extracting a stable one-factor solution including all 16 items. The internal consistency of the final scale was satisfactory (coefficient alpha .88). Other properties of the questionnaire, such as test–retest reliability, remain to be established.

Wilson, A., Dollman, J., Lushington, K., & Olds, T. (2010). Reliability of the 5-min psychomotor vigilance task in a primary school classroom setting. Behavior Research Methods, 42(3), 754-758.

This study evaluated the reliability of the 5-min psychomotor vigilance task (PVT) in a single-sex Australian primary school. Seventy-five male students (mean age 11.82 years, SD 1.12) completed two 5-min PVTs using a Palm personal digital assistant (PDA) in (1) an isolated setting and (2) a classroom setting. Of this group of students, a subsample of 37 students completed a test–retest reliability trial within the classroom setting. Using a mixed-model analysis, there was no significant difference in the mean response time (RT) or number of lapses (RTs 500 msec) between the isolated and the classroom setting. There was, however, an order effect for the number of lapses in the isolated setting, with the number of lapses being greater if the isolated test was conducted second. Test–retest intraclass correlation coefficients (ICCs) in the classroom setting indicated mod-erate to high reliability (mean RT .84, lapses .59). Bland–Altman analysis showed no systematic difference between the two settings. Findings suggest that the 5-min PDA PVT is a reliable measure of sustained attention in the classroom setting in this sample of primary-aged schoolchildren. The results provide further evidence for the versatility of this measuring device for larger interventions outside the laboratory.


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Sunday, February 27, 2011

FYiPOST: Encephalon carnival 84: Psychology-neuroscience roundup

The dominant theme of this month's Encephalon blog carnival is that no matter how straightforward something may appear, it is not always that simple. Among the intriguing offerings:
  • In The Mathematician in the Asylum, forensic psychologist Romeo Vitelli at Providentia explores the life of Andre Bloch, a leading French mathematician who spent 30 years in an asylum after knifing three family members to death.   
Hosting the 84th edition of Encephalon is Janet Kwasniak, who blogs about consciousness at "Thoughts on Thoughts." Janet is in France, but wherever you are the content is just a click away – HERE.





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IQs Corner recent literature of interest 3-25-11




This weeks installment of IQs Corner Recent Literature of Interest is now available.


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Saturday, February 26, 2011

IQs Corner listed as top 50 blog by psychology professionals


Thanks to all my regular and new readers for making IQs Corner a blog that has received another recognition---being listed as one of the top 50 blogs by psychology professionals Psycholoblog.



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Evolution of intelligence at Cogn-IQ blog







Bob Williams has authored an interesting article on the evolution of human intelligence over on the Cogn-IQ blog.


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Wednesday, February 23, 2011

Coffee with WJ III authors tomorrow at NASP conference

Importance of Automaticity@brainfitness, 2/23/11 3:53 PM

Brain Fitness (@brainfitness)
2/23/11 3:53 PM
Indispensible automaticity: What is it & how does it influence my child's learning? http://bit.ly/fz2w86 #reading #education #edchat


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Sunday, February 20, 2011

Research brief: WAIS-IV US-Canadian factor and score comparability

The transportability of the meaning of an intelligence test batteries composite scores across countries/cultures is important when a test is originally developed and normed in one country and is then adapted and used in a second country.

Bowden et al (2010) recently investigated the factorial invariance of the WAIS-IV across US and Canadian samples. The results are summarized in the abstract below (click to enlarge). The WAIS-IV was found to measure the same theoretical constructs across the two countries. However, the reported difference in latent mean factor intercepts indicated that the WAIS-IV provides higher scores with Canadian subjects. The need for Canadian norms are suggested.






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