Americans do not separate the personal from the professional. Business is always personal. It is both legitimate and effective to appeal to emotions when negotiating.
impersonal vs. personal
Impersonal vs. Personal
The Germans separate the personal from the professional. Appealing to emotions during negotiations is considered to be both unprofessional and manipulative.
“Call the shots”
“Call the shots.” To be in charge and make the decisions. This expression highlights the emphasis on authority and decision-making power in American negotiation dynamics.