His group replicated the methods of psychographic profiling over two years, firstly examining differences in personality
traits, thinking styles and
cognitive biases
between voters in the UK's 2016 EU referendum and then devising their own campaign to test whether it might be possible to identify, target and influence voters.
For example, some have found significant differences
between children with divorced and continuously married parents even after controlling for personality
traits such as depression and antisocial behavior in parents.59 Others have found higher rates of problems among children with single parents, using statistical methods that adjust for unmeasured variables that, in principle, should include parents» personality
traits as well as many genetic influences.60 And a few studies have found that the link
between parental divorce and children's problems is similar for adopted and biological children — a finding that can not be explained by genetic transmission.61 Another study, based on a large sample of twins, found that growing up in a single - parent family predicted depression in adulthood even with genetic resemblance controlled statistically.62 Although some degree of selection still may be operating, the weight of the evidence strongly suggests that growing up without two biological parents in the home increases children's risk of a variety of
cognitive, emotional, and social problems.
Alexithymia is a personality
trait characterized by an impaired ability to identify and communicate emotions, difficulty in differentiating
between feelings and body sensations, an externally oriented
cognitive style and limited imagination (25).