The research, published in the journal of Personality and Individual Differences, looked at 800 men between the ages of 18-40 who completed an online survey about how many photos they posted on social media, and another questionnaire looking at their personality traits.
It also found men who edited their selfies before posting them were more likely to have traits of narcissism but editing selfies was not linked to psychopathic traits.
I didn't need to conduct a study to reach this same conclusion back in April.
And people wonder why the first psychologists and therapists where Catholic priests, nuns, and monks. You don't need a study to reach these conclusions; you simply need to know something about human nature.