Conscientiousness
Conscientiousness is the personality trait associated with orderliness, planned behavior and self discipline. The image type features are strongest correlated to this trait. These indicate that profile images with faces, especially with only one face, are good indicators of higher conscientiousness. This behavior can be caused by the fact that users high in this trait prefer the expected behavior (i.e., posting a picture of themselves).
In terms of colors, conscientious users prefer pictures which are not grayscale and are overall more colorful, natural and bright. Despite this, their pictures are not more aesthetic, being anti-correlated with sharpness and positively correlated with blur. Image composition shows a strong correlation only with not respecting the rule of thirds. These users show correlations for facial presentation with not wearing any type of glasses and a smaller face ratio. By analyzing demographics inferred from images, we observe that there is a strong correlation with predicted age, even if the data set is controlled for age. This, together with preference for a single face, indicate that conscientious users might display pictures that make them seem older.
Facial expressions are very indicative of conscientious people. The facial emotions of smiling, positive mood and valence (mostly influenced by joy) are all highly positively correlated, while negative mood, especially anger and sadness, are anti-correlated. We observe negative correlations with negative mood, disgust and fear and strong positive correlations with positive mood, joy and smiling. In general, conscientious people express the most emotions (highest expressiveness, lowest neutral) across all five traits. This does not align with what is generally known about conscientious people, but is explainable by taking in account that in a profile picture, a person is expected to smile and appear happy.
(original)
Conscientiousness is the personality trait associated with orderliness, planned behavior and selfdiscipline. The image type features are strongest correlated to this trait. Users high in this trait prefer the expected behavior (i.e., posting a picture of themselves) The facial emotions of smiling, positive mood and valence (mostly influenced by joy) are all highly positively correlated with conscientious people.
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