Table 1. Mean proportion of correct responses of the baboons and macaques in each task (and Scale) of the PCTB.

		macaques				baboons
Tasks	Trials	n	M (SD)	95% CI	Ind	n	M (SD)	95% CI	Ind	Chance
Space			.54 (.06)	[.51,.58]			.69 (.03)	[.65, .73]
Spatial Mem	6	13	.68 (.22)	[.55, .81]	7	5	.83 (.12)	[.69, .98]	4	.33
Object Perm	18	13	.65 (.08)	[.60, .70]	13	5	.71 (.06)	[.64, .79]	5	.33
Rotation	18	13	.46 (.09)	[.41, .51]	5	5	.49 (.19)	[.25, .73]	1	.33
Transposition	18	13	.39 (.07)	[.35, .44]	0	5	.73 (.17)	[.52, .95]	4	.33
Quantity			.67 (.08)	[.62, .72]			.66 (.06)	[.59, .73]
Rel Numbers	16	13	.70 (.13)	[.62, .78]	4	5	.69 (.15)	[.51, .87]	1	.50
Add Numbers	14	12	.64 (.11)	[.57, .71]	2	5	.63 (.03)	[.59, .67]	0	.50
Causality			.46 (.05)	[.43, .50]			.46 (.04)	[.41, .51]
Noise	12	13	.56 (.07)	[.51, .60]	0	5	.50 (.08)	[.40, .60]	0	.50
Shape	12	13	.66 (.17)	[.56, .76]	2	5	.70 (.13)	[.54, .86]	2	.50
Tool Use	1	13	0		0	5	0		0	.00
Tool Prop	30	13	.64 (.08)	[.59, .68]	4	5	.63 (.12)	[.48, .77]	2	.50
Social learning	3	10	0		0	5	.07 (.15)	[−.12, .25]	0	.00 a
Communication			.53 (.13)	[.45, .61]			.69 (.21)	[.42, .95]
Comprehension	18	13	.66 (.17)	[.56, .76]	4	5	.71(.09)	[.60, .82]	4	.50
Pointing Cups	8	13	.69 (.15)	[.60, .78]	3	5	.90 (.16)	[.70, 1.10]	4	.50
Attention State	4	13	.23 (.26)	[.07, .39]	0	5	.45 (.51)	[−.19, 1.09]	2	.00
Theory of Mind			.59 (.10)	[.53, .65]			.57 (.13)	[.41, .74]
Gaze following	9	13	.57 (.17)	[.47, .67]	12	5	.33 (.21)	[.08, .60]	3	.10a
Intention	12	13	.62 (.14)	[.53, .70]	2	5	.82 (.11)	[.68, .95]	3	.50

Note: Significant deviations from chance level are in boldface (α = .05). Performance on the scale level was not compared to chance as this varies between tasks. Trials = Number of trials performed in each task; n = Number of tested individuals; Ind = Number of individuals performing above chance level; CI = confidence interval;

^aresults of the baseline conditions.