Biological Pillar
Remy is a sniffer he is able to smell the ingredients from food and he was able to smell out rat poison and was able to save his dad. This shows that even though he was a rat he still used his sensation for purposes that he wanted. Since his taste and smell is highly developed he is able to taste things even better he is able to feel the taste and that what makes him different from the rest of the other rats. When Remy saw the chef's head this shows that his consciousness changed because he's alone and he has to conform with being alone.
Cognition Pillar
Remy's memory to be able to remember how most of the things he's put in his mouth has tasted like when he was in the grandmas kitchen and he wants a spice and he was able to remember that because he's special and different from the rest. Remy is different since he is one of the only rats with the ability to read and that's why he is special since he is able to read the instructions that the book says which show a stage a special development for the rat.
Life Span Development and Learning Pillar
Remy is able to learn because he combines things he tasted and he is astounded by the food he creates and he learns and learns to be able to make good food. Remy is able to learn from the experience went he got separated from his clan because they weren't together and he had to learn to be independent and he was able to learn what he had been wanting to learn. While Remy is experience the new place hes at he's learning how he can survive and the options and the life styles of those around him.
Social and Personality Pillar
Remy's personality is changing since when the chef told him that he is a chef and not a thief when he went to get food. Alfredo Linguini doesn't have good social skills and he is anxious at the start of the scene when he is first shown, he is shy and doesn't communicate well thats why others speak on his behalf. Alfredo is still shy but even though he didn't cook and he made his food bad but when remy made his food, his social were alot better due to him being able to finally stand up to the man who called him "garbage boy".
Mental and Physical Health
Since he is alone in the sewer he has to mentally rely on himself since now he has no one to talk to and share the experience with this just shows how sad and depressed he was when he is technically talking to himself. Remy ever so slightly changes his personality throught out the movie when he is a very shy and timid around the kitchen he later turns into an entire existence. Remy's mental state is fixed when he is able to communicate with Alfredo and he is finally able to talk to someone who can understand why he does what he does.