Participants
The present analyses involved 421 twin pairs (MZ = 168, DZ = 253) recruited from The Western Reserve Reading Project, a longitudinal study examining genetic and environmental interactions of young children’s reading and mathematical abilities. Twins were recruited primarily from Ohio with a large number of families residing in the Cleveland, Columbus, and Cincinnati areas. Twins’ zygosity was determined
using DNA analysis via a cheek swab. For the cases where parents did not consent to genotyping (n=76), zygosity was determined using a parent questionnaire on twins’ physical similarity (Goldsmith, 1991). This study examined the relationship for reading motivation and reading comprehension, in the context of genetic influences.
ParticipantsThe present analyses involved 421 twin pairs (MZ = 168, DZ = 253) recruited from The Western Reserve Reading Project, a longitudinal study examining genetic and environmental interactions of young children’s reading and mathematical abilities. Twins were recruited primarily from Ohio with a large number of families residing in the Cleveland, Columbus, and Cincinnati areas. Twins’ zygosity was determinedusing DNA analysis via a cheek swab. For the cases where parents did not consent to genotyping (n=76), zygosity was determined using a parent questionnaire on twins’ physical similarity (Goldsmith, 1991). This study examined the relationship for reading motivation and reading comprehension, in the context of genetic influences.
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