Latest papers

Tubes, tables and traps: great apes solve two functionally equivalent trap tasks but show no evidence of transfer across tasks.

Image scoring in great apes.

Great apes' (Pan troglodytes, Pan paniscus, Gorilla gorilla, Pongo pygmaeus) understanding of tool functional properties after limited experience.

How the great apes (Pan troglodytes, Pongo pygmaeus, Pan paniscus, Gorilla gorilla) perform on the reversed reward contingency task II: transfer to new quantities, long-term retention, and the impact of quantity ratios.

Analysis of chimpanzee history based on genome sequence alignments.

Orrorin tugenensis femoral morphology and the evolution of hominin bipedalism.

Social games between bonobos and humans: evidence for shared intentionality?

Ape metaphysics: object individuation without language.

Urinary androgens and cortisol metabolites in field-sampled bonobos (Pan paniscus).

Task constraints mask great apes' ability to solve the trap-table task.

From micrograms to picograms: quantitative PCR reduces the material demands of high-throughput sequencing.

New records on prey capture and meat eating by bonobos at Lui Kotale, Salonga National Park, Democratic Republic of Congo.

Handedness in captive bonobos (Pan paniscus).

Animal cognition: great apes wait for grapes.

The evolutionary origins of human patience: temporal preferences in chimpanzees, bonobos, and human adults.

Functional evidence for differences in sperm competition in humans and chimpanzees.

Play in adult bonobos (Pan paniscus): modality and potential meaning.

Mental representation of symbols as revealed by vocabulary errors in two bonobos (Pan paniscus).

Linguistics. Read my slips: speech errors show how language is processed.

Living in societies. All together now--pull!