Tendency of babies less than 1 month old to only see the external side of a figure and not the internal.
EXTERNALITY EFFECT: "Externality effect is seen in babaies less than 1 month old."
Cite this page: N., Sam M.S., "EXTERNALITY EFFECT," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/externality-effect/ (accessed June 27, 2022).