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FELDMAN, ROBERT S.; JENKINS, LARRY; and POPOOLA, OLADEJI. Detection of Deception in Adults and Children via Facial Expressions. CHILD DEVELOPMENT, 1979, 50, 350-355. The ability of adult observers to detect verbal deception from the facial nonverbal behavior of 36 stimulus persons in 3 age groups (first graders, seventh graders, and college students) was examined. Stimulus persons were led to be verbally truthful or deceptive while they were interacting with an adult or were alone, and their facial expressions were secretly videotaped. Untrained, naive judges' ratings showed greater accuracy in decoding the first-grade stimulus persons than the older ones, although ratings of the seventh-grade and college-age stimulus persons suggested differences in the nature of the 2 groups' successful deception.
Feldman et al. (Fri,) studied this question.