Table 2.

Behavioural results (RT, accuracy, and response efficiency).

Condition	Response efficiency		RT		Accuracy
Mean	SE	Mean (milliseconds)	SE	Mean (% correct)	SE
Animal global	1636.8	59.9	1565.1	52.5	.96	.01
Tool global	1984.2	94.2	1594.7	62.7	.97	.01
Animal size	2292.7	154.3	1830.5	52.2	.94	.01
Tool size	1674.9	84.5	1896.7	45.8	.90	.02
Animal colour	2192.8	112.2	1866.9	50.1	.86	.03
Tool action	2333.4	118.5	2031.7	61.1	.90	.02

SE = standard error.