From Electric English...
This is an assignment that has the students probe into the feelings/personality/physical attributes/and ethics of Lennie's character. More importantly, what are this character's motivations? Why do they make the choices and decisions they do? How do their interactions with other characters and their inner thoughts help the reader determine their inner world. Hopefully, after this map, students will be able to answer that for themselves.
NOTE: This could certainly be used as an assessment if you wanted :)