Leadership behavior and collective efficacy should be regarded as group variable, and role involvement should be regarded as personal variable.

领导行为、集体效能更应该看作是群体水平的预测变量，角色投入更应该看作是个体水平的预测变量。

youdao

The key group variable is the type of solidarity in the sociological sense.

FORBES: The Fundamental 2x2 of Capitalism

That the EU continues forcing an economically illiterate idea onto those who do not want it is surely causing high levels of inter-governmental anger within the economically variable and culturally disparate group of 20.

FORBES: Occupy Wall Street's 'Robin Hood Tax' A Tough Sell At G20

On that we could see what appeared to be pretty variable and informative patterns of DNA. Purely by chance, we had a family group on there, one of my technicians and a mother and father.

NPR: Pioneering DNA Forensics