Final answer:
Coulter-Kern et al. (2013) conducted a study on the impact of social media on political engagement, finding that active engagement with political content on social media increases political participation and influences political opinions.
Step-by-step explanation:
Coulter-Kern et al. (2013) conducted a study that focused on examining the impact of social media on political engagement. The results of the study showed that individuals who actively engage with political content on social media are more likely to participate in political activities such as voting, attending rallies, and contacting elected officials. The study also found that social media plays a significant role in shaping individuals' political opinions and attitudes.