quot;Review your course resources to identify three specific psychological theories or principles that can be applied to the analysis of the book or...

"Review your course resources to identify three specific psychological theories or principles that can be applied to the analysis of the book or film. You might discuss defense mechanisms or refer to developmental stages in the person's life that might have been important, or consider the effects of abuse, alcoholism, and addiction, etc. You can approach the subject matter from different perspectives—psychoanalytical, biological, behavioral, cognitive, and sociocultural. You can discuss the role emotion, memory, or motivation plays in the character's development, or the importance of the environment, and influences such as racism and sexism." 

What are three psychology theories that can related to Hoarding?