How to use it
Before a profile picture, thumbnail or first frame goes out: a real smile or a calm face (never a forced grin, a curled lip or wide fear eyes), hands in frame, facing the lens fully.
How sure we are
S Evidence: strong. Large trials or many studies, pointing the same way.
E Evidence: built from practice. What works for coaches and practitioners. Labelled that way.
Sources
Warmth first (Fiske et al. 2007, 🟢) · fake smiles read as fake (🟡) · Van Edwards' gesture counts and photo ratings (🟠).
Not medical, legal or financial advice.