In this article, research findings from studies which have examined th
e developmental pattern for recognition of unfamiliar faces and releva
nt theories are reviewed. Recognition of faces was found to improve wi
th age from about five years to adulthood, with some studies reporting
a dip during early adolescence. Two neuropsychological explanations (
development of hemisphere specialization and maturational changes) and
four information processing explanations (depth of face processing, p
attern of feature salience, development of face schema, and encoding s
hift) are described and assessed for their tenability in light of repo
rted findings. Explanations for the developmental dip are also discuss
ed. Since these explanations failed to receive sufficient empirical su
pport, an alternative explanation in terms of increasing efficiency of
encoding is proposed.