One study found that the proportion of anger-related words in 148 million tweets from 1347 U.S.counties predicted the counties' heart disease rates.This research best illustrates the use of
A) a case study.
B) experimentation.
C) a survey.
D) naturalistic observation.

Question

Quizplus · Accepted Answer

The study used naturalistic observation to examine the relationship between anger-related language in tweets and heart disease rates in counties.

One Study Found That the Proportion of Anger-Related Words in 148