Smile is meant to
make people feel pleased to see you. Making a positive impression on others is dependent
on the duration of smile. Hanibuchi et al. did a study to determine how
observers perceive smile based on the duration of smiles. The smile patterns
differed in duration between was fast (275 ms), normal (550 ms) and slow (1100
ms). 6 actors who can express smiles easily were selected for smiling for
different duration. Actors as well as 20 other participants who were
university and graduate students were observers for evaluating the experiment.
They found
different results for actors and other participants who were not trained for
smiling. Actors had more positive impressions when duration of smile was
normal, which is 550 ms, and negative impressions in slow and fast conditions.
While participants had more positive impressions when duration of smile was
slow and fast. The duration for which smile should be given depends on who is
on the receiving end. So make sure whether your crush is an actress or not
before you give a smile to her.
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Reference - Shumpei
Hanibuchi, Shogo Nishida and Kyoko Ito. Graduate School of Engineering Science
Osaka University.
Research paper name - A study of impression differences
between smile performers and observers -Toward the Significance of Smile
Training.
Published in – IEEE (2010)
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