Over the years, humans across languages and cultures have consistently chosen more positive words than negative ones. However, the use of positive language appears to be in decline and some fear that it may be falling fast.
Linguistic positivity in historical texts reflects dynamic environmental and psychological factors
With Shifts in National Mood Come Shifts in Words We Use, Study Suggests http://nyti.ms/2gxlqky
Positive Language Is on Decline in The US, Study Suggests http://bit.ly/2gYtfE2