thumbnail|Smile, depicting joy (Ximena Navarrete, [[Miss Universe 2010)]] thumbnail|Wide eyes and raised eyebrows are common indicators of surprise (Figure 20 from Charles Darwin's [[The Expression of the Emotions in Man and Animals)]] Emotionality is the observable behavioral and physiological component of emotion. It is a measure of a person's emotional reactivity to a stimulus. Most of these responses can be observed by other people, while some emotional responses can only be observed by the person experiencing them. Observable responses to emotion (i.e., smiling) do not have a single meani
thumbnail|Smile, depicting joy (Ximena Navarrete, [[Miss Universe 2010)]] thumbnail|Wide eyes and raised eyebrows are common indicators of surprise (Figure 20 from Charles Darwin's [[The Expression of the Emotions in Man and Animals)]] Emotionality is the observable behavioral and physiological component of emotion. It is a measure of a person's emotional reactivity to a stimulus. Most of these responses can be observed by other people, while some emotional responses can only be observed by the person experiencing them. Observable responses to emotion (i.e., smiling) do not have a single meaning. A smile can be used to express happiness or anxiety, while a frown can communicate sadness or anger. Emotionality is often used by experimental psychology researchers to operationalize emotion in research studies.
==Early theories==
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).