>>They are emphasizing the importance of timing, but I don't believe GDB instructors have found that ultra precise timing is quite as essential for guide tasks as it may be for shaping other behaviors.<< My physical disability makes timing an issue often. I work with many who have coordination and dexterity issues that use the clicker teaching method. Timing is very important when trying to capture a behavior such as a muscle move or head turn or leg lift. In these cases it may create more of concern or may take longer for the dog to figure out what you are rewarding for... Practice and repetition over time will sharpen a persons timing, the more practice the better one gets. It becomes a conditioned reflex in time. I use verbal marker as well as clicker. What is amusing is I often find myself squeezing what ever is in my hand even when using the verbal marker... after years of using the clicker the muscles automatically react. However, I have found that this method can be very forgiving, it has not been an issue for me in clicker teaching assistance dog behaviors and tasks. I use it to teach over 60 cued behaviors as a volunteer trainer for an assistance dog organization as well as teaching my own assistance dogs. Things like pulling off shoes, socks, pants, shirts, jackets... Opening doors, cabinets, refrigerators, dishwashers... Pushing: down my foot rest on my wheelchair, doors closed, light switches, my walker to me... Retrieving: a phone in an emergency, my cane, my glasses, water from the refrigerator, purse, keys, and so much more... Find: keys, remote, phone, seat for me to sit, find door, ... positioning with chairs, for support, to help people rise...etc...so much more that there really is on the limit of your imagination and patience. There is great promise in this method and it's amazing uses are yet being researched. I would not be teaching dogs today if it wasn't for this method. I trained dogs for almost 30 years before my disability,using traditional methods. I wish I would have found this method at the start! I know that the dogs I worked with over all those years would have benefited and I know I would have... This is indeed exciting that they are working in this field with the method. Best Wishes & Wags, Diane & Raven http://AssistanceDogJournal.net http://groups.yahoo.com/group/Golden_Paw_ADC/ "My Assistance Dog is not my whole life, but she makes my life whole" ~D.L.Shotwell "Until one has loved an animal, a part of one's soul remains unawakened." ~Anatole France