Sid Meier's Alpha Centauri/Citizens

Doctor

 * Psych: 2

Empath
Replaces Doctor
 * Prerequisite: Centauri Meditation
 * Economy: 2
 * Psych: 2

Engineer
Replaces Technician
 * Prerequisite: Fusion Power
 * Economy: 3
 * Labs: 2

Librarian

 * Prerequisite: Planetary Networks
 * Labs: 3

Technician

 * Economy: 3

Thinker
Replaces Librarian
 * Prerequisite: Mind/Machine Interface
 * Psych: 1
 * Labs: 3

Transcend
Replaces Empath and Thinker
 * Prerequisite: Secrets of Alpha Centauri
 * Economy: 2
 * Psych: 2
 * Labs: 4