Here is the actual data from Adah Maurer study.
[as posted to a newsgroup by someone else]
The columns show the amount of physical punishment
the people reported that they had received as children.

 D E G R E E O F P H Y S I C A L P U N I S H M E N T

                 Never Rare Moderate Severe Extreme
 Violent inmates
 at San Quentin   0    0       0     0         100%

 Juvenile
 Delinquents      0    2%      3%    31%       64%

 High School
 drop-outs        0    7%      23%   69%        0

 College
 freshmen         2%   23%     40%   33%        0

 Professionals    5%   40%     36%   17%        0

 [The Influence of Corporal Punishment on Crime by Adah Maurer,
Ph.D. and
 James S. Wallerstein (1987)] 


The implications of these results are clear.  The more someone
is successful in life (not being a juvenile delinquent, not
dropping out of school etc.) the less likely they were to have
been physically punished as a child or the less severe the
physical punishment.  To put it the other way around:  the more
physical punishment, the more likely the person later became
a criminal, high-school dropout etc.