We describe an application of genetic algorithms GAs to the design of cellular automata CAs that can perform computations requiring global coordination A GA was used to evolve CAs for two computational tasks density classi cation and synchronization In both cases the GA discovered rules that gave rise to sophisticated emergent computational strategies These strategies can be analyzed using a co...

Cognitive ability strongly aggregates in families, and prior twin and adoption studies have suggested that this is the result of both genetic and environmental factors. In this study, we used a powerful design--home-reared and adopted-away cosibling controls--to investigate the role of the rearing environment in cognitive ability. We identified, from a complete national Swedish sample of male-m...

OBJECTIVE This study sought to explore how anxiety impacts college students with ADHD, especially with regard to cognitive functioning. METHOD 473 college students with ADHD and a control group of 200 college students without ADHD completed self-report measures of anxiety, ADHD symptomatology and tests of cognitive functioning. RESULTS Students with ADHD reported significantly more anxiety ...

This study investigates whether drinker-drivers attributes are associated with imperfect rationality or irrationality. Using data from eight U.S. cities, we determine whether drinker-drivers differ from other drinkers in cognitive ability, ignorance of driving while intoxicated (DWI) laws, have higher rates of time preference, are time inconsistent, and lack self-control on other measures. We f...

Parents' antisocial behavior is associated with developmental risks for their offspring, but its effects on their children's cognitive ability are unknown. We used linked Swedish register data for a large sample of adolescent men (N = 1,177,173) and their parents to estimate associations between fathers' criminal-conviction status and sons' cognitive ability assessed at compulsory military cons...