Table 3.

Overview of results from individual analyses. For rank-order stability, ‘All’ represents intra-class correlation coefficients (ICC) correlations for all raters combined (N = 50 chimpanzees), ‘same’ represents chimpanzees who were rated by the same raters at both time points (N = 14), and ‘different’ represents chimpanzees whose raters differed at T1 and T2 (N = 36). The reliable change index (RCI) provides the percentage of individuals that significantly increased, stayed the same or decreased over the study period according to the RCI calculation

	Rank order stability (raters)			RCI (%)
Factor	All (N = 50)	Same (N = 14)	Different (N = 36)	Increased	Same	Decreased
Agreeableness	0.535	0.551	0.309	2	88	10
Dominance	0.854	0.529	0.551	18	82	0
Extraversion	0.712	0.479	0.589	2	98	0
Methodical	0.493	0.515	0.025	4	94	2
Openness	0.596	0.493	0.824	10	82	8
Reactivity/undependability	0.661	0.631	0.559	2	42	56