“The Croods will make it because we changed all the rules. The rules that kept us in the dark and because my Dad, who taught us any one can change. From now on, we’ll stay out here where we can follow the light.” - Eep
That quote from the movie showed us how much the family has changed through time even though almost all throughout the movie,the father was trying to cling to the idea that the only way for his family to survive is to follow the rules, never to leave the cave at night, they must do all things together and live their life in fear in order to be safe.
Even though her daughter was relentess to follow the rules, through the movie it showed us that their are other ways for them to survive and to not live in fear. But their father didn't want anything to change, he's still clinging to the idea or belief that it wasn't safe for them. I can relate this situation in the movie with the belief perseverance.
It is when people tend to cling to ideas even when confronted or has even proved to be completly untrue.
In this case, the father's relentess to accept the change his family is slowly learning.

The character's that had a very opposing belief's schemas and judgements for me would be "grug" and "guy". Right from the start their belief's and schemas would clash. Grug, is a very practical and safe person. He wanted nothing but his family to be safe. In doing so, he kind of controlled his family and forgot to live life to the fullest.
While "guy" is a very adventurous and go with it kind of person. His the type of person that live's in the moment and when the two characthers meet ofcourse their personalities would clashed. But in the end of the movie they we're able to reconcile they're differences. Grug accepted the changes that he was so afraid to adapt and guy told grug the real reason why he was so eager to "jumped on the sun and rode