Table 1.

Definition of Anhedonia as Described in Literature

Author	Year	Column A	Column B	Column C
Agrawal et al.	2012	X
AhnAllen et al.	2012		X
Bogdan et al.	2011	X
Calabro et al.	2012	X
Chevallier et al.	2012		X
Cohen et al.	2011	X
Cohen et al.	2012	X
Compton & Frank	2011		X
de Cock et al.	2011	X
Dowd & Barch	2012		X
Falkenberg et al.	2012		X
Fujiwara et al.	2011			X
Gabbay et al.	2012		X
Gabbay et al.	2012		X
Germine et al.	2011		X
Goldberg et al.	2011	X
Gradin et al.	2011			X
Grillo	2012	X
Komulainene et al.	2011	X
Kuha et al.	2012		X
Lee et al.	2011		X
Light et al.	2011		X
Martin et al.	2011		X
Martinotti et al.	2011			X
Miettunen et al.	2011		X
Miura et al.	2012		X
Mora et al.	2012	X
Nefs et al.	2012			X
Ossewaarde et al.	2011		X
Pelle et al.	2011	X
Ritsner et al.	2011	X
Rodrigo et al.	2011	X
Rubin	2012	X
Sherdell et al.	2012	X
Shomaker et al.	2012	X
Steer	2011			X
Tully & Baker	2012		X
Tully et al.	2012	X
Ursu et al.	2011		X
Velthorst & Meijer	2012	X
Yan et al.	2011	X

Note. Column A: Papers that described anhedonia with terms like “loss” and “inability” to describe a total lack of ability to experience pleasure. Column B: Papers that described anhedonia with terms like “reduction” and “diminished” to describe a partial lack of ability to experience pleasure. Column C: Papers that described anhedonia as both complete and partial lack of ability to experience pleasure.