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. Author manuscript; available in PMC: 2009 Oct 2.
Published in final edited form as: J Abnorm Psychol. 2009 May;118(2):335–347. doi: 10.1037/a0015636

Figure 3. Startle Potentiation to Predictable and Unpredictable Shock Cues by Beverage Group.

Figure 3

Startle potentiation difference scores are displayed for Predictable (Predictable cue – No-shock cue) and Unpredictable (Unpredictable cue – No-shock cue) shock conditions. These startle potentiation differences scores were displayed separately in the left panels of Figure 1 & Figure 2. These data are presented here together to facilitate direct comparison of startle potentiation magnitude across the two manipulations. Error bars represent standard errors of the Beverage group effects. The significant Beverage Group × Block Type interaction (p= .032) indicates that alcohol has a larger effect on Unpredictable vs. Predictable shock cue startle potentiation. The simple effect of Beverage Group is significant for Unpredictable shock cues (p=.021) but not for Predictable shock cues (p= .716).