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The study included 82 pairs of biological siblings, 96 pairs of adopted siblings, and an additional 35 pairs consisting of one adopted and one biological sibling.
Assessment of intelligence within this sample was twofold, incorporating both traditional IQ tests and genetic analysis. Participants aged 16 years and older were assessed using the Wechsler Adult Intelligence Scale–Revised (WAIS-R), while those 15 years and younger were evaluated with the Wechsler Intelligence Scale for Children–Revised (WISC-R). These assessments are among the most widely recognized and respected measures of intelligence.
In addition to the traditional IQ tests, the researchers examined polygenic scores for cognitive performance and educational attainment. Polygenic scores represent an aggregate measure of genetic predisposition to certain traits. They are calculated by summing the effects of numerous genetic variants across the genome, each contributing a small amount to the trait of interest.
The researchers found that both IQ scores and polygenic scores were significant predictors of political orientation. This pattern held true even when controlling for various socioeconomic factors.
Assessment of intelligence within this sample was twofold, incorporating both traditional IQ tests and genetic analysis. Participants aged 16 years and older were assessed using the Wechsler Adult Intelligence Scale–Revised (WAIS-R), while those 15 years and younger were evaluated with the Wechsler Intelligence Scale for Children–Revised (WISC-R). These assessments are among the most widely recognized and respected measures of intelligence.
In addition to the traditional IQ tests, the researchers examined polygenic scores for cognitive performance and educational attainment. Polygenic scores represent an aggregate measure of genetic predisposition to certain traits. They are calculated by summing the effects of numerous genetic variants across the genome, each contributing a small amount to the trait of interest.
The researchers found that both IQ scores and polygenic scores were significant predictors of political orientation. This pattern held true even when controlling for various socioeconomic factors.
CB would be considered an outlier here being more conservative than liberal.
These findings shouldn't come as much of a surprise though as much of the intelligentsia in our country swings liberal.
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