TABLE 3.

The name, age, sex, rearing history and information about experiment participation of chimpanzees (N = 11).

Name	Age	Sex	Rearing history	Participation (condition)
Hope	26	f	Nursery	Unfamiliar (causal), familiar (causal)
Kofi	11	m	Mother	Unfamiliar (causal), familiar (causal)
Fraukje	41	f	Nursery	Unfamiliar (causal), familiar (causal)
Bangolo	7	m	Mother	Familiar (causal)
Sandra	24	f	Mother	Familiar (causal)
Lobo	13	m	Mother	Familiar (causal)
Tai	14	f	Mother	Unfamiliar (causal), familiar (arbitrary)
Dorien	36	f	Nursery	Unfamiliar (causal), familiar (arbitrary)
Riet	39	f	Nursery	Unfamiliar (causal), familiar (arbitrary)
Lome	15	m	Mother	Familiar (Arbitrary)
Frodo	23	m	Mother	Familiar (arbitrary)