Final answer:
The most common personality traits within a society are known as its cultural or mass culture traits, and these are shaped by both genetic and environmental factors, with culture being a major influence.
Step-by-step explanation:
The statistically most common personality traits in a particular society, whether most or all members have them or not, are known as the society's cultural or mass culture traits. These traits encompass the shared views, attitudes, and behaviours that are prevalent within that society at large. As mentioned, personality is significantly shaped by both genetic and environmental factors, with culture being a major environmental influence. Personality psychologists ponder if personality traits are consistent across cultures or subject to variation.
In understanding personality within a cultural context, the concept of collective unconscious also comes into play, referring to psychological tendencies passed down across generations. Additionally, trait theorists use models like the Big-5 (openness, conscientiousness, extroversion, agreeableness, and neuroticism) to describe our personality. However, the specific manifestation of these traits can vary greatly depending on cultural influences, leading to different behaviours even with the same underlying tendency, such as seeking in-group approval.