Hertel, Guido; Kerr, Norbert L.; Messé, Lawrence A. (2000). "Motivation gains in performance groups: Paradigmatic and theoretical developments on the Köhler effect". Journal of Personality and Social Psychology. 79 (4): 580–601. doi:10.1037/0022-3514.79.4.580. PMID11045740.
Osborn, Kaitlynn A.; Irwin, Brandon C.; Skogsberg, Nikolaus J.; Feltz, Deborah L. (2012). "The Köhler effect: Motivation gains and losses in real sports groups". Sport, Exercise, and Performance Psychology. 1 (4): 242–253. doi:10.1037/a0026887.
Irwin, Brandon C.; Scorniaenchi, Jennifer; Kerr, Norbert L.; Eisenmann, Joey C.; Feltz, Deborah L. (11 May 2012). "Aerobic Exercise Is Promoted when Individual Performance Affects the Group: A Test of the Kohler Motivation Gain Effect". Annals of Behavioral Medicine. 44 (2): 151–159. doi:10.1007/s12160-012-9367-4. hdl:2097/14846. PMID22576339. S2CID3697216.
Irwin, Brandon C.; Scorniaenchi, Jennifer; Kerr, Norbert L.; Eisenmann, Joey C.; Feltz, Deborah L. (11 May 2012). "Aerobic Exercise Is Promoted when Individual Performance Affects the Group: A Test of the Kohler Motivation Gain Effect". Annals of Behavioral Medicine. 44 (2): 151–159. doi:10.1007/s12160-012-9367-4. hdl:2097/14846. PMID22576339. S2CID3697216.
Irwin, Brandon C.; Scorniaenchi, Jennifer; Kerr, Norbert L.; Eisenmann, Joey C.; Feltz, Deborah L. (11 May 2012). "Aerobic Exercise Is Promoted when Individual Performance Affects the Group: A Test of the Kohler Motivation Gain Effect". Annals of Behavioral Medicine. 44 (2): 151–159. doi:10.1007/s12160-012-9367-4. hdl:2097/14846. PMID22576339. S2CID3697216.
Irwin, Brandon C.; Scorniaenchi, Jennifer; Kerr, Norbert L.; Eisenmann, Joey C.; Feltz, Deborah L. (11 May 2012). "Aerobic Exercise Is Promoted when Individual Performance Affects the Group: A Test of the Kohler Motivation Gain Effect". Annals of Behavioral Medicine. 44 (2): 151–159. doi:10.1007/s12160-012-9367-4. hdl:2097/14846. PMID22576339. S2CID3697216.
Hertel, Guido; Kerr, Norbert L.; Messé, Lawrence A. (2000). "Motivation gains in performance groups: Paradigmatic and theoretical developments on the Köhler effect". Journal of Personality and Social Psychology. 79 (4): 580–601. doi:10.1037/0022-3514.79.4.580. PMID11045740.
Irwin, Brandon C.; Scorniaenchi, Jennifer; Kerr, Norbert L.; Eisenmann, Joey C.; Feltz, Deborah L. (11 May 2012). "Aerobic Exercise Is Promoted when Individual Performance Affects the Group: A Test of the Kohler Motivation Gain Effect". Annals of Behavioral Medicine. 44 (2): 151–159. doi:10.1007/s12160-012-9367-4. hdl:2097/14846. PMID22576339. S2CID3697216.
Irwin, Brandon C.; Scorniaenchi, Jennifer; Kerr, Norbert L.; Eisenmann, Joey C.; Feltz, Deborah L. (11 May 2012). "Aerobic Exercise Is Promoted when Individual Performance Affects the Group: A Test of the Kohler Motivation Gain Effect". Annals of Behavioral Medicine. 44 (2): 151–159. doi:10.1007/s12160-012-9367-4. hdl:2097/14846. PMID22576339. S2CID3697216.
Irwin, Brandon C.; Scorniaenchi, Jennifer; Kerr, Norbert L.; Eisenmann, Joey C.; Feltz, Deborah L. (11 May 2012). "Aerobic Exercise Is Promoted when Individual Performance Affects the Group: A Test of the Kohler Motivation Gain Effect". Annals of Behavioral Medicine. 44 (2): 151–159. doi:10.1007/s12160-012-9367-4. hdl:2097/14846. PMID22576339. S2CID3697216.
Irwin, Brandon C.; Scorniaenchi, Jennifer; Kerr, Norbert L.; Eisenmann, Joey C.; Feltz, Deborah L. (11 May 2012). "Aerobic Exercise Is Promoted when Individual Performance Affects the Group: A Test of the Kohler Motivation Gain Effect". Annals of Behavioral Medicine. 44 (2): 151–159. doi:10.1007/s12160-012-9367-4. hdl:2097/14846. PMID22576339. S2CID3697216.