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. 2018 Oct 18;13(10):e0205341. doi: 10.1371/journal.pone.0205341

Table 2. Mean (SD) accuracy and response time performance by facial expression and age group.

Anger Fear Happy Disgust
Accuracy (% correct)
    Younger adults 92.20 (10.37) 98.54 (4.22) 99.02 (3.00) 95.61 (9.50)
    Older adults 89.00 (11.72) 95.50 (8.46) 96.25 (5.89) 85.00 (13.96)
d = -0.29 d = -0.46* d = -0.60** d = -0.89***
Response time (sec)
    Younger adults 3.01 (0.17) 2.74 (0.16) 2.05 (0.09) 2.83 (0.16)
    Older adults 5.32 (0.28) 5.54 (0.26) 3.86 (0.26) 5.91 (0.33)
d = 1.56*** d = 2.01*** d = 1.49*** d = 1.87***

Effect size (Cohen’s d) and significance (*p < .05, **p < .01, ***p < .001) of the group difference is also presented.