Child- Van Leeuwen Flashcards
Spearman
g factor
a measure of mental ability
do well in one area do well in all
50% of the variance
Caroll
single factor theory
cognitive ability from 3 areas
stratums- III= g factor, II= broad abilities, I= specific
doesnt explain savants
Gardener
different platforms
footballers cant write
multiple intelligence
influence of biological factors
sex and gender boys have more grey matter in frontal parietal lobes and girls have more in frontal lobes boys better at maths and logic girls better at literacy and language hormones change this
genetics
adoptive parents will have less similar intelligence than biological parents to their children.
MZT are more concordant
MRI scans done on kids and found that the neuroplastin gene decreases grey matter and therefore intelligence
what is assortative mating
Assortative mating is a mating pattern and a form of sexual selection in which individuals with similar phenotypes mate with one another more frequently than would be expected under a random mating pattern.
what is phenotypic assortment
assumes that spouses choose each other based on observable characteristics
social homogamy
assortment based on solely environmental similarities.
what is genotype environment correlation
parents inflict their environment on their kids
aim
biological and environmental factors in intelligence
ie cultural transmission and assortative mating
sample
dutch twins
112 families with siblings
twins about to turn 9
no mental health issues
design
IV= MZT or DZT DV= performance
method
- zygosity tested
- children separate rooms
- RPM own pace
- puzzles and logic questions
- adults did the APM
- assortative mating and social homogamy assessed
results
- sex no effect
- cultural transmission no effect
- spousal correlation, phenotype assortment more likely
- GE interaction, environment is more environment
conclusions
IQ affected by genes
environment influences too
phenotypic assortment better explains
