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A genetic variant associated with ADHD has been found at higher frequency in more nomadic populations and those with more of a history of migration. [10] Consistent with this, the health status of nomadic Ariaal men was higher if they had the ADHD associated genetic variant (7R alleles), whereas in recently sedentary (non-nomadic) Ariaal ...
For humans, the Big Five personality traits, also known as the five-factor model (FFM) or the OCEAN model, is the prevailing model for personality traits. When factor analysis (a statistical technique) is applied to personality survey data, some words or questionnaire items used to describe aspects of personality are often applied to the same person.
Attention deficit hyperactivity disorder; Other names: Formerly: Attention deficit disorder (ADD), hyperkinetic disorder (HD) [1]: ADHD arises from maldevelopment in brain regions such as the prefrontal cortex, basal ganglia and anterior cingulate cortex, which regulate the executive functions necessary for human self-regulation.
Investigators in animal behaviour genetics can carefully control for environmental factors and can experimentally manipulate genetic variants, allowing for a degree of causal inference that is not available in studies on human behavioural genetics. [15] In animal research selection experiments have often been employed.
Behavioral epigenetics is the field of study examining the role of epigenetics in shaping animal and human behavior. [1] It seeks to explain how nurture shapes nature, [2] where nature refers to biological heredity [3] and nurture refers to virtually everything that occurs during the life-span (e.g., social-experience, diet and nutrition, and exposure to toxins). [4]
The actual genetic variation that exists among humans does not correlate with socially defined ethnic and racial categories, [24] yet there are patterns of genetic variation in some population groups that are more common than others. [25] Genetic ancestry is distinct from genealogical ancestry; as an individual's genealogical ancestors become ...
Binge eating disorder is the most common type of eating disorder in the U.S. Binge eating is characterized as eating large amounts of food in a short period, typically under two hours.
Unsolved problems relating to the behaviour of animals include: Homing. A satisfactory explanation for the neurobiological mechanisms that allow homing in animals has yet to be found. Flocking (behavior). How flocks of birds and bats coordinate their movements so quickly is not fully understood.