In message , Sacha
writes
I know a graphologist but know nothing about that art/science myself.
Her analyses of several of us at one sitting were pretty accurate,
though. Strange but true. ;-)

People also often find analyses by astrologers and clairvoyants and
assorted "psychics" pretty accurate.

One reason for this is cold-reading

http://en.wikipedia.org/wiki/Cold_reading

Another reason is the making of statements that most people would agree
with, either because they're generally true, or because they're things
most people want to believe about themselves. One classic experiment is
to take (say) two dozen horoscopes, and for one dozen give the
horoscopes to the subjects, and for the other dozen to give them out
randomly among the subjects. The evaluation of the accuracy of the
horoscopes is not statistically significantly different in the two
cases.

A third reason (which doesn't apply, at least strongly, to an individual
analysis) is the human tendency to remember the hits, and forget the
misses.
--
Stewart Robert Hinsley