Humans have more complex thoughts and preconceived ideas so while a dog (example) can easily be trained to gain a reward, a human might think of other outcomes that interfere with conditioning. That said, we are all conditioned in some form . Small things such as a daily routine is a result of conditioning. Disorganization in an adult can be (not always) a result of conditioning. Ex: if I never learn to organize my materials in my youth I will not be an organized adult unless I learn and recondition myself to be.