Step 1: Understanding the Concept:
Postures in body language often reflect a person's underlying emotional or mental state.
Step 2: Detailed Explanation:
Crossing arms is frequently interpreted as a defensive, passive, or aggressive posture. It creates a physical barrier between the speaker and the listener, suggesting that the person is closed off, feeling defensive (passive), or showing a stance of resistance/disagreement (aggressive).
Step 3: Final Answer:
The mental states of passiveness or aggressiveness are depicted in the crossing of arms.