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. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Psychol Bull. 2015 Apr 20;141(4):835–857. doi: 10.1037/bul0000014

Figure 3.

Figure 3

Fear conditioning did not differ between morning and evening (A) whereas extinction was significantly better learned in the morning (B). Extinction Recall in the morning showed generalization of extinction memory (C) whereas recall in the evening preserved the differentiation of the extinguished and unextinguished CS+ and favored expression of a greater overall degree of conditioned fear (D). Significance indicated for the Morning vs. Evening and CS+E vs. CS+U main effect (large asterisks) and trial-by-trial differences (small asterisks). SCR½d: differential SCR, * p < .05, ** p < .01. Error bars depict standard error of the mean.