Ravens Judge Competitors through Experience with Play Caching

Ravens Judge Competitors through Experience with Play Caching

Complex social behavior builds on the mutual judgment of individuals as cooperation partners and competitors [1]. Play can be used for assessing the others' dispositions in humans and nonhuman mammals [2], whereas little is known about birds. Recently, food-caching corvids have been found to rival primates in their ability to judge the behaviors and intentions of others in competition for hidde...

Ravens attribute visual access to unseen competitors

Recent studies purported to demonstrate that chimpanzees, monkeys and corvids possess a basic Theory of Mind, the ability to attribute mental states like seeing to others. However, these studies remain controversial because they share a common confound: the conspecific's line of gaze, which could serve as an associative cue. Here, we show that ravens Corvus corax take into account the visual ac...

Judge Posner through dissenting eyes.

Worlding through Play

Gamication—the use of game mechanics in conventionally nongame activities— has received attention in the eld of education. Games, however, are not reducible to the common mechanisms of gamication that target extrinsic motivation, and may also include elements such as role playing, world making, and collective storytelling. Here, the authors discuss the potential learning benets of largescal...

Perspective of a Juvenile Court Judge Judge

The juvenile court judge occupies a unique position. Like all other judges, the juvenile court judge must apply the law to resolve a dispute. For juvenile court judges handling abuse and neglect cases, however, the law requires a new type of role. The judge must monitor whether child welfare agencies have provided services to individual children and families sufficient to comply with federal an...