Now, the correlational design of Ridgway and Clayton's study means that we cannot say for sure whether the posting of Instagram selfies actually caused the other romantic partner to feel insecure or alienated, thus instigating a downward relationship spiral. Rather, it could be that an underlying personality trait — such as narcissism — caused some people not only to be more satisfied with their body image and to post more selfies, but also to have poorer-quality relationships.