The use of human input, therefore, appears to be crucial for recognizing correspondences for difficult class concepts (especially those without similar labels) and vetting those found using algorithms.
One likely possibility is that they were simply using temporal cues to recognize the correspondence between the coo face and vocalization and the grunt face and vocalization (albeit, demonstrating the recognition of this correspondence by looking at the mismatching face).
Indeed, it appears that human adults can use the same cues and, thus, readily recognize the correspondence between these very same rhesus monkey expressions [23].
Overall, our findings suggest that vervet infants recognize the correspondence between the faces and vocalizations of another species and that they do so at ages during which human infants already exhibit evidence of perceptual narrowing.
The purpose of our study was to determine whether infant vervet monkeys can recognize the correspondence between the faces and vocalizations of a primate species with which they had no prior experience.
Even though the vervets had no prior exposure to rhesus monkey faces and vocalizations, our findings show that infant vervets can, in fact, recognize the correspondence between rhesus monkey faces and voices (but indicate that they do so by looking at the non-matching face for a greater proportion of overall looking time), and can do so well beyond the age of perceptual narrowing in human infants.
In presenting this discussion, we relate the present findings to evidence from other studies to help assess the functional significance of the brain areas in which differences were found in this study between the autistic and typically developing populations, but recognize that correspondences between brain regions identified in different studies do need to be carefully evaluated.
Nilson was apparently unaware of Mendeleev's prediction, but Per Teodor Cleve recognized the correspondence and notified Mendeleev.
Although an atypical outcome, this would still indicate that they recognized the correspondence between the faces and voices and that they systematically avoided looking at the matching face.
Although the vervets recognized the correspondence between macaque faces and vocalizations by exhibiting differential looking at one face versus the other, they did so by looking at the nonmatching face.
First, both age groups recognized the correspondence between faces and vocalizations even though they are at or beyond the age where perceptual narrowing occurs in human infants (8 months) [24].
