Principle 1: Behavior is observable
Principle 2: Behavior is continuous
Principle 3: Behavior is interactive
Principle 4: Behavior is constrained
Principle 5: Behavior is sequenced
Principle 6: Behavior is interruptible
Principle 7: Behavior shows patterned variation
Principle 8: Behavior is hierarchical
Principle 9: Behavior is parallel
Principles 10-12: Behavior is cognitively caused, monitored, and readable
See the full story here: https://www.gamasutra.com/blogs/WendelinReich/20210629/384202/The_future_of_interactive_characters_part_14_Twelve_basic_principles_of_behavior.php