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. 2020 Apr 14;10:6302. doi: 10.1038/s41598-020-62940-w

Table 1.

Number of horses reaching the success criterion according to the number of sessions.

S2 S3 S4 S5
Training stage Recurrent faces vs. black circle 3 5 3
Recurrent faces vs. novel objects 3 8
Recurrent faces vs. novel faces 3 3 3 2

Success criterion: 75% of correct responses on two consecutive sessions; S2 to S5: session 2 to 5 (32 trials per session).