This 'anhedonic' subgroup was distinguished by high scores in the disorganisation and negative dimensions.
Ferrari Alberto, Pelizza Lorenzo 2009, 'Anhedonia in schizophrenia and major depression: state or trait?', Annals of General Psychiatryhttp://www.annals-general-psychiatry.com/content/8/1/22. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Anhedonic features diminished reward learning abilities to a greater extent, even predicting clinical outcome.
Anita eMust, Szatmar eHorvath, Szatmar eHorvath, Viola Luca Nemeth, Zoltan eJanka 2013, 'The Iowa Gambling Task in depression – what have we learned about sub-optimal decision-makingstrategies?', Frontiers in Psychologyhttp://journal.frontiersin.org/Journal/10.3389/fpsyg.2013.00732/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This anhedonic state was defined by a decrease in sucrose preference that was not exhibited by all animals.
Boyks Marco, Kholod Natalia, Couch Yvonne, Strekalova Tatyana, Malin Dmitry, LeprincePierre, Steinbusch Harry MW 2011, 'Update in the methodology of the chronic stress paradigm: internal control matters',Behavioral and Brain Functionshttp://www.behavioralandbrainfunctions.com/content/7/1/9. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)