A handshake is a two-second personality test. Before a single word is exchanged, both parties have already formed an impression. Research from the University of Alabama found that handshake quality correlates with personality traits more reliably than most first-impression signals.
The bone crusher
An excessively firm grip is not confidence. It is compensation. People who squeeze too hard are often signaling dominance they do not feel. It is the handshake equivalent of speaking too loudly.
The dead fish
A limp, passive handshake communicates disinterest or low energy. In DISC terms, this often comes from a high-C personality who finds physical greetings uncomfortable, or from someone who simply does not want to be there.
The two-handed sandwich
Placing the left hand over the shake creates a "sandwich." Politicians love this move. It signals warmth and trust, but when used too early in a relationship, it feels controlling. Reserve judgment: it can be genuine warmth or calculated rapport-building.
The pull-in
Drawing the other person into your personal space during the shake is a dominance play. High-D personalities do this instinctively. It shifts the physical dynamic in their favor before the conversation starts.
The fingertip grab
Gripping only the fingers instead of the full hand suggests hesitation or distrust. It keeps the other person at a literal distance. If this is someone you know well, it might signal unresolved tension.
The perfect handshake
Firm but not crushing. Full hand contact. Two to three seconds. Eye contact during the shake. Matching the other person's pressure rather than overpowering or submitting. The best handshake adapts to the person in front of you.