> as lemmas

1920 B. Russell Pract. & Theory Bolshevism i. i. 19 The group-mentality that Communism requires.

1955 Life 26 Dec. 145/2 The group mentality may be operating, in a refusal to acknowledge the good of anything that originates outside the group.

1992 A. Bell tr. M. Toussaint-Samat Hist. Food Introd. 3 Tastes and culinary skills do in fact reflect a group mentality—‘Tell me what you eat and I will tell you what you are’.