In modern societies, fewer people seem to be dating, getting married, or having kids. What is causing this trend? Early motivational psychology may have an answer.

Breeding dogs for particular characteristics, or phenotypes, has been going on for centuries. Dogs are companions and workers, in service to humans, and they have thus been bred to accentuate ...

An curved arrow pointing right. Humans have a long history of breeding animals for food. The animals, however, may not look the same now as when they were first domesticated. Photo courtesy of ...

In the United States, the eugenics movement hit its stride in the early 1900s, when increased interest in the genetics of animal breeding coincided ... from the human population were such complex ...

An curved arrow pointing right. Humans have a long history of breeding animals for food. The animals, however, may not look the same as they do now when they were first domesticated. Original ...