Young children struggle in the classic tests of appearance versus reality. In the current Study 1, 3-year-olds had to determine which of 2 objects (a deceptive or a nondeceptive one) an adult requested when asking for the "real X" versus "the one that looks like X." In Study 2, children of the same age had to indicate what a single deceptive…

Prior research suggests that children younger than age 3 or 4 do not understand that an agent may be deceived by an object's misleading appearance. The authors asked whether 14.5-month-olds would give evidence in a violation-of-expectation task that they understand that agents may form false perceptions. Infants first watched events in which an…

Examined deception and false-belief understanding in preschoolers following noncompliance. Found that over half of 3- and 5-year olds touched a prohibited toy during experimenter's absence and most denied it. Almost all preschoolers looked into a forbidden box, most denied it, and a minority consistently feigned ignorance of contents. False-belief…

Children between three and five years of age engaged in a procedure in which a puppet competitor chose an object which the children preferred. Fewer than 30 percent of three year olds but more than 80 percent of five year olds knew how to conceal their preference from the competitor. (BC)

In one experiment, autistic children continued to fail a task that involved strategic deception when no opponent was present. In a second experiment that involved reaching for an object under direct and detour conditions, autistic children had greater difficulty with the task than did nonautistic, mentally handicapped children. Cites advantages…

Investigated the ability to deceive in participants with autism, mental retardation (MR), and normal development. Results indicated that participants with autism and those with MR did not differ in their ability to use a deceptive method, but participants with autism were significantly less able to understand that they manipulated the beliefs of…