Association of common genetic variants in GPCPD1 with scaling of visual cortical surface area in humans.

Visual cortical surface area varies two- to threefold between human individuals, is highly heritable, and has been correlated with visual acuity and visual perception. However, it is still largely unknown what specific genetic and environmental factors contribute to normal variation in the area of visual cortex. To identify SNPs associated with the proportional surface area of visual cortex, we performed a genome-wide association study followed by replication in two independent cohorts.

Manipulating regulatory focus in cigarette smokers.

Regulatory focus theory (RFT; Higgins, 1997) may help to address the issue of motivation in cigarette smoking cessation. RFT suggests that individuals may be motivated to approach desired end-states (e.g.