群ぐん集しゅう心しん理り

noun

mass psychology; crowd psychology; mob psychology

Refers to the psychological dynamics of large groups, often in contexts of collective behavior, panic, or social influence.

• 群ぐん集しゅう心しん理りによって、冷れい静せいな人ひとでもパニックに陥おちいることがある。

  Due to crowd psychology, even calm people can sometimes fall into a panic.

noun

herd mentality; group mind

Describes the tendency of individuals to conform to group behavior or thinking, often used in discussions of social conformity and decision-making.

• 投とう資しの世せ界かいでは、群ぐん集しゅう心しん理りがバブルを引ひき起おこすことがある。

  In the world of investing, herd mentality can sometimes cause bubbles.