In a previous study, Hall and his team sampled 100 Facebook users, paralleling the demographics of the social networking site, and asked them to fill out a personality survey.

A group of coders looked at each person's Facebook activity, 53 cues in all, to see whether certain personality types were more likely to do specific activities.

The researchers then had 35 strangers spend 10 to 15 minutes on each of the Facebook users' profile pages to see if they could correctly gauge a person's personality.

The crux of the study looked at which cues correlated to personality types and whether the 35 strangers were able to correctly detect personality traits based on those cues.

"We found that extroversion was the easiest personality trait for strangers to interpret followed by agreeableness and openness," Hall noted.

While strangers were able to correctly match certain Facebook activities with personality traits in the previous study, researchers now believe new algorithms enacted by Facebook make it harder to detect personality traits.

The study is set to appear in the journal New Media & Society.

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