"It's the strongest status signal we know of among the emotions; stronger than a happy expression, contentment, anything".
The look that crossed his face--the panic of knowing something was going on but not knowing what it was--was not a happy expression to have witnessed.
Target stimuli contained also a pair of eyes, eyebrows, and a mouth within the circle, forming a schematic face with a sad or a happy expression.
After a further 1 sec (2 seconds total from the trial onset), the static neutral face started to morph into either a fearful or a happy expression, or the radial checkerboard pattern started to expand or contract.
From previous behavioural research it is known that gender discrimination relies on the processing of the eyes and the detection of a happy expression on processing the smiling mouth.
In the target detection task, participants were required to detect a specified target in a stream of consecutively presented standard stimuli (in the Identity task, participants had to detect a specific identity; in the Expression task, a happy face; in the Gaze task a face with direct gaze).
Participants were required to detect a specified target in a stream of consecutively presented standard stimuli: in the Identity task, participants had to detect a specific identity; in the Expression task, a happy face; in the Gaze task, a face with direct gaze (Fig. 1).
Morphed or blended images refer to a widely used image manipulation technique in which; pictures of two prototypical facial expressions are "mixed" or "blended" by computerized image morphing to create a blend of the two (e.g., a face that shows 90% of a prototypical happy expression and 10% of a prototypical angry expression) [ 26].
Aim for a pleasant, happy expression, but not a full-blown smile.
SECRETARY CLINTON: I mean, usually it is a very happy expression on one's face.
