Behavioral avoidance system and behavioral inhibition system ...

[erika]

Behavioral avoidance system and behavioral inhibition system activity are thought to be tied to differences in biological functioning.
 
  What neurotransmitters are thought to be closely linked with behavioral avoidance system and behavioral inhibition system functioning?

Question 2

How does the nomothetic approach to personality differ from the idiographic approach?
 
  What will be an ideal response?

[Edwyer]

Answer to Question 1

The neurotransmitter dopamine appears critically involved in the functioning of the system that engages the pursuit of incentives (behavioral avoidance system). In contrast, serotonin and gamma-aminobutyric acid (GABA) are thought to mediate behavioral inhibition system functioning.

Answer to Question 2

NOMOTHETIC: Assumes traits exist and have the same psychological meaning in everyone; people differ only in their relative standing on the traits.
IDIOGRAPHIC (similar to idiosyncrasy): Emphasizes that each person is unique, suggesting some traits are possessed by only one person. Sometimes, it is impossible to compare people because everyone is, in effect, on a different scale.