Human needs and drives

Among the many authors, Maslow remains a must reference

Ultimate goal: happiness?
Abundance in detachment: a side effect

Personality

The ego mediating approach by Freud marks the start of most behavioral psychology studies 

https://www.studyblue.com/notes/note/n/psych-233-study-guide-2013-14-desouza/deck/8702421

Personality defense mechanisms

Primitive-immature-mature

How do they relate to debate? TOK

Persuasion

Convincing the undecided or changing minds and hence behaviour.

Source: uploaded to www.flickr.com by Callie B. 

Source: www.kenyonreview.org

Source: www.sharenator.com

Persuasion and influence

From the Greek rhetoric movement to Robert Cialdini's constructs

Trayectories of rhetoric according to culture.
Source: Subpage by D.Brown at: http://www2.aasa.ac.jp/. reprinted From "Cultural thought patterns in inter-cultural education," by Robert B. Kaplan, 1966, Language Learning,16 (1 and 2), 1-20. Copyright 1966 by Applied Linguistics. 

Source: Image from http://www.educational-business-articles.com/