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A few questions!
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17-12-2009, 19:28
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Pavel
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Join Date: Sep 2003
Posts: 2,190
reward only is not optimal method. Not by childern, not by dogs as well. The best way is "contrast method", means penalty-reward. This method is proof by time and many generations of our grandparents.
Last edited by Pavel; 18-12-2009 at
10:51
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