Your dog must already understand that the Spontaneous Sit with Eye Contact is the way he can earn resources in order for this exercise to work.
ATTACHING YOUR DOG’S LEASH
Many dogs get overly aroused and act silly when you get out their leashes to take them for walks. This exercise teaches dogs to calmly accept the leash before they ever get outside. If your dog is calm inside, you have a better chance of getting attention from him outside. Break this exercise down into as many parts as is necessary for your dog to be as close to 100% successful as possible.
◆ Wait for a SPONTANEOUS SIT, then MARK (click or say YEA or YEP) and REINFORCE (give a treat).
◆ Touch the leash, mark and reinforce.
◆ Jiggle the leash, mark and reinforce.
◆ Pick up the leash, 1 inch, mark and reinforce.
◆ Gradually pick up the leash farther each time, mark and reinforce each time you pick up the leash until you are holding the leash in front of you.
◆ Stretch out the leash, mark and reinforce.
◆ Stoop or sit down (no leaning and looming), mark and reinforce. If you are using a clicker DO NOT CLICK IN YOUR DOG’S FACE!
◆ Attach leash, mark and reinforce.
If your dog gets up at any point, simply put the leash down and calmly wait for the spontaneous sit before you try again. Your dog should remain sitting as you attach the lead. Then verbally release him (say FREE) after the leash is attached. Repeat as necessary.
If your dog makes a mistake, verbally mark the dog when he re-sits himself, but DO NOT give a treat. Use only praise as a reinforcement after a fixed mistake. He must be successful the first time you try a step in order to earn a treat reinforcement. If you give a treat after the dog fixes his own mistake, you can inadvertently reinforce the mistake. I always want to make sure the dog to gets positive feedback for fixing a mistake.