In one experiment, children aged 3 and 4 saw a puppet named “Squirrel” remove five toys of the same type from a container full of toys and happily play with them. Across children, the toys that Squirrel removed were the same (for example, all five were blue flowers). What varied, however, were the contents of the container.
For one-third of the children, 100 percent of the toys were the same type (so, in this example, all were blue flowers). For another third of the children, only 50 percent were that type (that is, half were blue flowers and half were red circles). Finally, for the last third of the children only 18 percent were of that type (that is, 82 percent were red circles). Later on, children were asked to give Squirrel a toy that he likes. The children were more likely to give Squirrel the blue flowers if he had selected them out of the container that had other toys in it.
More amazingly, the proportion of other toys mattered as well; they gave Squirrel the blue flowers more when the container included only 18 percent blue flowers, and slightly less often when the container had 50 percent blue flowers. When the container had 100 percent blue flowers, they gave him toys at random. That means the child inferred that the puppet liked blue flowers best if the sample of five toys didn’t match the proportion of toys in the population (the container). This is a statistical phenomenon known as non-random sampling.
In another experiment, 18- to 24-month-olds also learned about the preferences of an adult experimenter from non-random sampling. They watched the adult choose five toys that were either 18 percent or 82 percent of the toys in a box. The adult played happily with the toy either way, but the toddler only concluded that the adult had a preference if they’d picked the toys from a box in which that toy was scarce.
Of course, statistical information isn’t the only way children learn about the preferences of other people. Emotion and verbalization are also important—but this is a new cue that no one had identified before, says Tamar Kushnir of Cornell University. She carried out the study with Fei Xu of the University of California, Berkeley and Henry M. Wellman of the University of Michigan.
“Babies are amazing,” says Kushnir. “Babies and children are like little scientists. Mostly they learn by observing and experiencing the world. Just let them do it. Later on, there will be time for formal instruction, but when they’re really young, this sort of informal learning is critical.”
For more information about this study, please contact: Tamar Kushnir at email@example.com.
Psychological Science is ranked among the top 10 general psychology journals for impact by the Institute for Scientific Information. For a copy of the article "Young Children Use Statistical Sampling to Infer the Preferences of Other People" and access to other Psychological Science research findings, please contact Keri Chiodo at 202-293-9300 or firstname.lastname@example.org.
Keri Chiodo | EurekAlert!
Rutgers-led innovation could spur faster, cheaper, nano-based manufacturing
14.02.2018 | Rutgers University
New study from the University of Halle: How climate change alters plant growth
12.01.2018 | Martin-Luther-Universität Halle-Wittenberg
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters
Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...
Let’s say the armrest is broken in your vintage car. As things stand, you would need a lot of luck and persistence to find the right spare part. But in the world of Industrie 4.0 and production with batch sizes of one, you can simply scan the armrest and print it out. This is made possible by the first ever 3D scanner capable of working autonomously and in real time. The autonomous scanning system will be on display at the Hannover Messe Preview on February 6 and at the Hannover Messe proper from April 23 to 27, 2018 (Hall 6, Booth A30).
Part of the charm of vintage cars is that they stopped making them long ago, so it is special when you do see one out on the roads. If something breaks or...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
16.02.2018 | Information Technology
16.02.2018 | Health and Medicine
16.02.2018 | Physics and Astronomy