However, not much empirical evidence has been documented as to the extent to which these traits relate to certain psychological constructs. (link.springer.com)
There has not, however, been much empirical evidence supporting this claim or calculating how large an effect later start times might have. (educationnext.org)
Apart from being named by Alexander Nix in the video leak which blew up the scandal, there isn't much empirical evidence of Cambridge Analytica actually tampering with South American electoral processes. (techcrunch.com)