Stephen A. Petrill

Substantial Genetic Influence on Cognitive Abilities in Twins 80 or More Years Old

Gerald E. McClearn, Boo Johansson, Stig Berg et al. · Science · 1997 · 733 citations

Developmental Cognitive Neuroscience, Twins 80, Individual Differences +19

The heritability of general cognitive ability increases linearly from childhood to young adulthood

Claire M. A. Haworth, Margaret J. Wright, Michelle Luciano et al. · Molecular Psychiatry · 2009 · 623 citations · Full text

Neuropsychological Functioning, Cognitive Science, Cognitive Factor +12

Infant zygosity can be assigned by parental report questionnaire data

Thomas S. Price, Bernard Freeman, Ian Craig et al. · Twin Research · 2000 · 376 citations · Full text

Comorbidity Between Reading Disability and Math Disability

Erik G. Willcutt, Stephen A. Petrill, Sarah Wu et al. · Journal of Learning Disabilities · 2013 · 332 citations · Full text

Neuropsychology, Disability, Education +18

Infant zygosity can be assigned by parental report questionnaire data

Thomas S. Price, Bernard Freeman, Ian Craig et al. · Twin Research · 2000 · 279 citations

Family Medicine, Genetic Testing, Genetics +22