http://www.clickertraining.com/blog/612 en http://www.clickertraining.com/node/866 <br /> <p><a href="http://www.clickertraining.com/node/866">read more</a></p> http://www.clickertraining.com/node/866#comment cat doorbell operant conditioning Wed, 08 Nov 2006 17:48:31 -0600 vardaeml 866 at http://www.clickertraining.com