Prospective and Retrospective Metacognitive Abilities in Rhesus Monkeys
Metacognition refers to a knowledge of one’s own cognitive abilities and one’s aptitude to alter these abilities if necessary.

Sex-specific asymmetries in communication sound perception are not related to hand preference in an early primate
Left hemispheric dominance of language processing and handedness, previously thought to be unique to humans, is currently under debate.

Loss of Olfactory Receptor Genes Coincides with the Acquisition of Full Trichromatic Vision in Primates
Olfactory receptor (OR) genes constitute the molecular basis for the sense of smell and are encoded by the largest gene family in mammalian genomes.

Which came first: Primates' ability to see colorful food or see colorful sex?
The adaptive significance of the unique ability in many primates to distinguish red hues from green ones (i.e., trichromatic color vision) has always enticed debate among evolutionary biologists.

Color Vision Drove Primates to Develop Red Skin and Hair, Study Finds
You might call it a tale of "monkey see, monkey do.

The aye-ayes have it: The preservation of color vision in a creature of the night
A quest to gain a more complete picture of color vision evolution has led Biodesign Institute researcher Brian Verrelli to an up-close, genetic encounter with one of the world's most rare and bizarre-looking primates.

Three new species of lemurs identified
Researchers have identified three new species of lemurs, the small, big-eyed primates native to the island of Madagascar.

Big brains arose twice in higher primates
After taking a fresh look at an old fossil, researchers determined that the brains of the ancestors of modern Neotropical primates were as small as those of their early fossil simian counterparts in the Old World.

Slowly-developing primates definitely not dim-witted
Some primates have evolved big brains because their extra brainpower helps them live and reproduce longer, an advantage that outweighs the demands of extra years of growth and development they spend reaching adulthood...

'Cultured' chimpanzees pass on novel traditions
The local customs that define human cultures in important ways also exist in the ape world, suggests a study.

Aging and Gene Expression in the Primate Brain
Human cerebral cortex, human cerebellum, and chimpanzee cortex each undergo different patterns of age-related gene expression alterations

De novo protein sequence analysis of Macaca mulatta
The current study validates a robust method to confidently characterize the proteins from an incomplete sequence database of Macaca mulatta

Primate brain architecture and selection in relation to sex
The aim of this paper was to investigate the relationship between selection in relation to sex and the evolution of brain architecture in primates, and to draw attention to this largely neglected aspect of mammalian brain evolution.

Apes - not monkeys - ace IQ tests
The great apes are the smartest of all nonhuman primates, with orangutans and chimpanzees consistently besting monkeys and lemurs on a variety of intelligence tests

Primates expect others to act rationally
When trying to understand someone's intentions, non-human primates expect others to act rationally by performing the most appropriate action allowed by the environment, according to a new study

Color Vision Drove Primates to Develop Red Skin and Hair, Study Finds
Researchers at Ohio University have found that after primates evolved the ability to see red, they began to develop red and orange skin and hair.

For Primates, Tourism Can Be Less Fun Than a Barrel of Monkeys
Primate tourism, an economic benefit and conservation tool in many habitat countries, has exploded in popularity over the past two decades in places like China, Borneo, Uganda, Rwanda, Northern Sumatra, Madagascar, Gabon and Central America.

The aye-ayes have it: The preservation of color vision in a creature of the night
A quest to gain a more complete picture of color vision evolution has led Biodesign Institute researcher Brian Verrelli to an up-close, genetic encounter with one of the world's most rare and bizarre-looking primates.

Experts discuss use of human stem cells in ape and monkey brains
Panel publishes recommendations to minimize risk of altering animals' 'moral status'

Like their pregnant mates, primate dads-to-be pack on pounds
Confirming what many have long suspected, scientists have found that male monkeys of two different species get heavier when their mates are pregnant.