Sentence examples for both brain size and from inspiring English sources
Twin studies suggest the same genetic factors influence both brain size and intelligence.
Nevertheless, the researchers point to the particularly low cortical surface areas of low-income children and the differences that even small, incremental increases in income can make as evidence that antipoverty measures could make a big difference in both brain size and intellectual achievement.
However, variance in both brain size and body mass is much higher among than within bird species, which is required for the feasibility of a comparative analysis [44].
Passerine birds are ideal for our study because they show substantial variation in both brain size and migratory behavior [18], [44].
Moreover, heritabilities of 50 80% are found for both brain size and GMA.
With age both brain size and fluid-type intelligence decline, and regional atrophy is often suggested as causing decline in specific cognitive abilities.
Surprisingly, the results of our study here found that three of these fast-evolving MCPH genes overlapped with the four MCPH genes under estradiol regulation, suggesting that natural selection may favor parallel changes of both brain size change and brain size dimorphism.
Because IQ is associated with both brain size [ 41] and other neuroanatomical and neurophysiological factors [ 38], it could be that the patients with the largest cognitive reserve had a greater capacity to benefit from the help they received at the outpatient clinic.
This highlights the need to carefully consider evolutionary and plastic changes in both absolute brain size and body size when investigating how relative brain size co-varies with aspects of ecology and life history.
We modeled brain size (both as log-absolute brain size and residual brain size) as a function of migratory distance and confounding factors with a phylogenetic generalized least squares (PGLS) approach [58], [59].
Our results indicate that variation among populations is large, both in terms of brain size and in the size of separate brain parts in wild nine-spined sticklebacks.
