What is the difference between these examples?
My attitudes have greatly shaped after the study.
My attitudes have been greatly shaped after the study.
I was searching for some essay conclusion examples on the Internet and found this one:
My attitudes have greatly shaped after this study. I have realized the ways meat impact our life and health. Meatless meals might improve the health conditions of patients suffering from various disorders, and the observed study proves it.
I wanted to use the first phrase in my own essay. I wonder if it is correct or not. Personally, it seems weird to me.
I don't want to use exactly the words that are in the sentence. I want to write something like 'My attitude(s) towards [something] have been greatly shaped over this period of time/since I was a child/during my life. Would it be correct?