Infants have expectations about how leaders will behave toward their followers and reacted when leaders failed to act against wrongdoers

Infants 17 months of age expect leaders – but not others – to intervene when one member of their group transgresses against another, a new study reveals.

The findings, published in the Proceedings of the National Academy of Sciences, add to growing evidence that children in their second year of life have a well-developed understanding of social hierarchies and power dynamics, said University of Illinois psychology professor Renée Baillargeon, who led the research.

The study was conducted in Baillargeon’s Infant Cognition Lab by graduate student Maayan Stavans, who then proceeded to postdoctoral studies on a Fulbright Fellowship at Bar-Ilan University in Ramat-Gan, Israel.

“We know that adults expect the leaders of social groups to intervene to stop within-group transgressions,” Stavans said. “We wanted to know how early those expectations appear in human development, so we examined the question in very young children.”

The research relied on a well-established method that gives insight into the reasoning of children too young to fully express themselves verbally: Infants typically stare longer at events that unfold in ways they don’t expect.

“By tracking how long children stare at different events, we gain insight into what they think,” Stavans said.

Image credit: Renee Baillargeon – Bear Puppet Show: Infants in the study watched as a protagonist bear, in red, either intervened to redress a wrong perpetrated by the bear in blue against the bear in yellow, or ignored the transgression.

The study involved 120 infants. In a series of experiments, the researchers used bear puppets to enact skits in front of infants who sat comfortably on a parent’s lap. Some of the children watched scenarios involving a protagonist bear that two other bears treated as a leader, and some saw a protagonist bear that appeared to have no authority over the other two bears.

In all the scenarios, the protagonist presented the other bears with two toys for them to share, but one bear quickly grabbed both toys, leaving none for the other bear. Next, the protagonist either rectified this transgression by redistributing one of the toys from the wrongdoer bear to the victim bear, or the protagonist ignored the transgression by approaching each bear without redistributing a toy.

“The scenarios differed in the status of the protagonist – was she a leader or not? – and in the protagonist’s response to the transgression – did she rectify the situation or ignore it?” Baillargeon said.

“Infants stared longer when the leader ignored the wrongdoing than when she rectified it,” Baillargeon said.

“This suggests that infants expected the leader to intervene and right the wrong in her group, and were surprised when she took no such action.”

The children also stared longer at the wrongdoer bear than they stared at the victim bear when the leader ignored the transgression, as if something about the wrongdoer would explain the leader’s reluctance to correct her.

The infants did not appear to be surprised when a protagonist who was not a leader failed to redress the same wrongdoing.

(Read also: Teens who can describe negative emotions can stave off depression)

In two experiments, infants consistently stared longer when leaders failed to act against wrongdoers, Stavans said. “But they held no particular expectation for intervention from non-leaders.”

In a third experiment, one of the bears announced that she did not want a toy and the other bear took both toys. The infants in this experiment stared longer when the leader intervened to make sure that each bear had one toy.

“It was as if the infants understood that in this case there was no transgression, so they viewed it as overbearing for the leader to redistribute one of the toys to a bear who had made it clear she didn’t want one,” Stavans said.

The findings provide new evidence that infants can reason about leaders, Baillargeon said. “We knew from previous work that children this age have specific ideas about how followers will behave toward their leaders,” she said. “Now we see that they also have complementary expectations about how leaders will behave toward their followers.”

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