People do not express jealousy through a single emotion or a single [[behavior]].[11][12][13] They instead express jealousy through [[diverse]] emotions and [[behaviors]], which makes it difficult to form a [[scientific]] definition of jealousy. Scientists still do not have a [[universally]] agreed upon definition of jealousy. They instead define jealousy in their own words, as illustrated by the following examples: | People do not express jealousy through a single emotion or a single [[behavior]].[11][12][13] They instead express jealousy through [[diverse]] emotions and [[behaviors]], which makes it difficult to form a [[scientific]] definition of jealousy. Scientists still do not have a [[universally]] agreed upon definition of jealousy. They instead define jealousy in their own words, as illustrated by the following examples: |