“Frequent viewing of selfies through social network sites like Facebook is linked to a decrease in self-esteem and life satisfaction, according to Penn State researchers in mass communications.” links found between selfie viewing and decreased self-esteem”
People who grew up with selfies / smartphones may be more likely to view the research with skepticism. Such skepticism could each negatively affect what could be learn from the research.
Also, the news article may or may not represent the actual research accurately. People with a scientific background perhaps might be more skeptical of how media reports on science.