The first one is the classic. Don't know about the second one.
Power dynamics have been extensively investigated by the "Johnstone school" of improv, because humans are (mostly preconsciously i.e. usually are not but can become conscious about it) interested in power dynamics -- especially in situations where power balance is switching -- so this is the key if you want improvise acts that feel realistic and capture the audience attention.
To really understand it, I would recommend taking some improv classes that are based on Johnstone's teachings. But the book will give you the idea.
The first one is the classic. Don't know about the second one.
Power dynamics have been extensively investigated by the "Johnstone school" of improv, because humans are (mostly preconsciously i.e. usually are not but can become conscious about it) interested in power dynamics -- especially in situations where power balance is switching -- so this is the key if you want improvise acts that feel realistic and capture the audience attention.
To really understand it, I would recommend taking some improv classes that are based on Johnstone's teachings. But the book will give you the idea.