Final answer:
The two psychological dimensions of etiology are extroversion/introversion and neuroticism/stability.
Step-by-step explanation:
The two psychological dimensions of etiology proposed by psychologists Hans and Sybil Eysenck are extroversion/introversion and neuroticism/stability. Extroversion is characterized by sociability and outgoing behavior, while introversion is associated with a higher need for solitude and limited interactions with others. Neuroticism refers to anxiety and an overactive sympathetic nervous system, while stability indicates emotional stability and a higher threshold for activating the flight-or-fight response.