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. Author manuscript; available in PMC: 2013 Sep 1.
Published in final edited form as: Dev Psychol. 2012 Mar 5;48(5):1488–1500. doi: 10.1037/a0027502

Table 2.

Longitudinal Changes and Effects of Age on the BIS/BAS Scales

F df p ηp2
Age Main Effects
BAS Total 11.94 (1, 154) .001 .072
BAS Drive 23.95 (1, 154) <.001 .135
BIS 8.88 (1, 154) .003 .055
Time Main Effects
BAS Reward Responsiveness 5.82 (1, 154) .017 .036
Sex Main Effects
BAS Reward Responsiveness 12.06 (1, 154) .001 .073
BIS 17.72 (1, 154) <.001 .103
Age × Time Interaction Effects
BAS Reward Responsiveness 5.88 (1, 154) .016 .037