I am a personality psychologist, I study individual differences in affect, behavior, cognition, and motivation as they are affected by biological causes and environmental events. That is the answer I give when people ask me what I do. I do not say that I am a cognitive-psychologist, a social-psychologist, a neuro-psychologist, a behavior geneticist, a psychometrician or a methodologist, for alt...

introduction: more than seventeen millions people die due to cardiovascular diseases which account for one third of death worldwide. half of 60% of all mortality caused by acquired diseases throughout the world is due to heart disorders and this ratio will augment to 73% by 2020. it is known that individual lifestyle has a great influence on the well-being of cardiovascular system. seven of the...