- Cognitive Abilities and Testing
- Educational and Psychological Assessments
- Child and Adolescent Psychosocial and Emotional Development
- Reading and Literacy Development
- Education, Achievement, and Giftedness
- Psychometric Methodologies and Testing
- Cognitive and developmental aspects of mathematical skills
- Counseling Practices and Supervision
- Behavioral and Psychological Studies
- Growth Hormone and Insulin-like Growth Factors
- Neural and Behavioral Psychology Studies
- Genetics and Neurodevelopmental Disorders
- Cognitive Science and Mapping
- Early Childhood Education and Development
- Emotional Intelligence and Performance
- Psychological Testing and Assessment
- Child Development and Digital Technology
- Personality Traits and Psychology
- Bullying, Victimization, and Aggression
- Doctoral Education Challenges and Solutions
- Career Development and Diversity
- Child and Animal Learning Development
- Down syndrome and intellectual disability research
- Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Language Development and Disorders
University of Florida
2015-2024
Florida Department of Education
1998-2021
Education and Early Childhood Development
2019
Florida College
1998-2006
Baylor College of Medicine
2006
Johns Hopkins All Children's Hospital
2006
Johns Hopkins University
2006
University of South Florida St. Petersburg
2000
Women & Children's Hospital of Buffalo
1999
Emory University
1995
Published empirical evidence for the Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV) does not address some essential questions pertaining to applied practice of intellectual assessment. In this study, structure and cross-age invariance latest WAIS-IV revision were examined (a) elucidate nature constructs measured (b) determine whether same are across ages. Results suggest that a Cattell-Horn-Carroll (CHC)-inspired provides better description test performance than published scoring...
The recently published fourth edition of the Wechsler Intelligence Scale for Children (WISC-IV) represents a considerable departure from previous versions scale. structure instrument has changed, and some subtests have been added others deleted. technical manual WISC-IV provided evidence supporting this new structure, but questions about consistency measurement across ages nature constructs measured by test remain. This research was designed to determine whether measures same its 11-year age...
This study examined the identification frameworks, specific models, and assessment practices used by school psychologists to identify students with learning disabilities (SLD) in public schools United States. We surveyed psychologist practitioners using an online survey, conducted a review of state regulations addressing SLD, evaluated effects state-level policies psychologists' characteristics on practices. Responses from more than 1,300 revealed that multiple SLD frameworks are utilized...
The Cross-Battery Assessment (XBA) approach to identifying a specific learning disorder (SLD) is based on the postulate that deficits in cognitive abilities presence of otherwise average general intelligence are causally related academic achievement weaknesses. To examine this postulate, we conducted classification agreement analysis using Woodcock-Johnson III Tests Cognitive Abilities and Achievement. We examined broad Cattell-Horn-Carroll theory held be meaningfully basic reading, reading...
Results of recent research by Kranzler and Keith (1999) raised important questions concerning the construct validity Cognitive Assessment System (CAS; Naglieri & Das, 1997), a new test intelligence based on planning, attention, simultaneous, sequential (PASS) processes theory human cognition. Their results indicated that CAS lacks structural fidelity, leading them to hypothesize Scales are better understood from perspective Cattell-Horn-Carroll (CHC) as measures psychometric g, processing...
.Flanagan, Ortiz, and Alfonso (2007) recently developed the Culture-Language Interpretive Matrices (C-LIMs) for cognitive assessment of children youth from culturally linguistically diverse backgrounds. To examine utility this new approach, we administered Woodcock-Johnson Tests Cognitive Abilities to a sample students receiving English as second language services in public school settings who had not been referred special education services. Results within-subjects analyses predicted...
This study examines the criterion-related validity evidence of scores on Mayer—Salovey—Caruso Emotional Intelligence Test: Youth Version—Research Version. The authors also investigate relationship between MSCEIT-YV and chronological age. Results provide initial support for construct but raise questions future research.
This study used estimated factor scores from a bifactor analysis of the Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV) to examine unique effects its latent variables on academic achievement. In doing so, we addressed potential limitation multicollinearity in previous studies incremental validity WAIS-IV. First, representing psychometric g and 4 group factors WAIS-IV index scales were computed model. Subtest composite for Individual Achievement Test-Third (WIAT-II) then predicted...
.Psychometric g is the largest, most general, and predictive factor underlying individual differences across cognitive tasks included in intelligence tests. Given that overall score from tests interpreted as an index of psychometric g, we examined correlations between general factors extracted individually administered using data five samples children adolescents (n = 83 to n 200) who completed at least two six We found strong indicating these measure same construct, g. A total three...
In Conjectures and Refutations, the philosopher of science Karl Popper (1962) stated that “the criterion scientific status a theory is its falsifiability, or refutability, testability”...
Superior school performance was reported for 52 Ecuadorian probands with severe deficiency of insulin-like growth factor I (IGF-I) due to GH receptor (GHRD) resulting from homozygosity the E180 splice mutation GHR. In contrast, subnormal intelligence in a study 18 genetically heterogeneous Israeli patients, attributed frequent hypoglycemia or IGF-I dependence brain development. This is first controlled evaluation intellectual ability patients GHRD. We compared age (mean ± sd age, 11.5 2.8...