What characterizes a group personality?

A group personality is characterized by the merging of individual personalities into one identity. This reflects the idea that when individuals come together in a group, their distinctive traits, values, and behaviors can blend to form a collective personality that influences the group's dynamics and interactions. This collective identity often shapes the group's culture, norms, and decision-making processes, making it a significant factor in group cohesion and effectiveness.

The other options do not fully encompass what defines a group personality. The notion of a dominant personality (the second option) suggests that one individual may overshadow others, rather than highlighting the blend of diverse personalities. The lack of individual expression (the third option) implies that individuals must suppress their unique traits, which is contrary to the idea of a collective personality that integrates those individual differences. Lastly, while the collective decision-making style (the fourth option) is indeed influenced by the group's personality, it is more of a function of the group dynamics rather than a defining characteristic of the group personality itself.