"positive association" means that two things are connected or related in a good or beneficial way. It suggests that when one thing increases or changes, the other thing also tends to increase or change in a similar direction. Full definition
If this is the case, you can help ease your pet's anxiety by creating positive associations with the carrier. (onegreenplanet.org)
We found strong positive associations between exposure to violence during adolescence and later self - reported depressive and anxiety symptoms. (link.springer.com)
The trick to training a dog to enjoy using a dog crate is by creating positive associations with it from the start. (ipupster.com)