1. Path A
Narcissism
Social Media
Path B
Plausible causal paths linking narcissism and social media. Path A represents
narcissism influencing social media. Path B represents social media influencing
narcissism. Together, Paths A and B represent bidirectional influence

2. Increased self-esteem/ inflated self-concept
Narcissism
Social Media
Motive to self-enhance
Sample Social Media as Self-regulation model: this is a simple version showing the role of self-enhancement motivation in narcissists’ social media use, and the feedback loop whereby self-concept in inflated and narcissism is maintained.

3. Social Media Use
Grandiose
narcissism
Vulnerable
narcissism
Extraversion
low Agreeableness
Neuroticism
Plasticity
Stability
Sample integrative trait model of narcissism and social media use. The Big Five traits are grounded in the meta-traits of plasticity and stability.

4. Narcissism of site owner
Perception of
Site owner
Cues or
traces:
Social
media site
content
Photos
Language
Hashtags
Friends
Favorites
Other
Accuracy
Sample Lens model: Accuracy refers to correlation between site owner’s narcissism and perception of narcissism based on site. Cues or traces are aspects of the site that may be predicted by owner's narcissism and/or predict perception of owner’s narcissism.

5. Narcissism and Social Media: Meta-Analytic Correlations
Note: Data from McCain & Campbell, 2017