This is probably not a prominent area of knowledge but you should know who did what so here's a list made so far, please tell me if I've missed anyone and feel free to use it and whatnot:
Wolfgang Kohler - Insight Learning with Sultan
Tolman & Honzik - Latent learning with rats
Ivan Pavloc - Classical conditioning
John B Watson (And Rosalie Rayner) - Little Albert
Edward Lee Thorndike - Trial & Error Learning
Skinner - Operant conditioning
Garcia & Koelling - Taste aversion (saccharine flavoured water)
Bandura - observing little children, dirty fella
Hans Seyle - GAS
Lazarus & Folkman - Transactional model
Freud - Crazy, psychodynamic guy
Holmes & Rahe’s - Social readjustment
Rosezweig - proved that enriched environments led to thicker cerebral cortices
Muris & King - transmission of threat information
Morris - proved hippocampi are involved in learning through rats and mazes
John Calhoun - Crowding
Seligman - Learned helplessness
Donald Hebb - Long-term potentiation
George Engel - biopsychosocial framework
Emil Kraeplin - basis for categorical approaches