Linda Acredolo Placed Babies at 6, 11, and 16 Months

Multiple Choice

Linda Acredolo placed babies at 6, 11, and 16 months of age in a room where they were trained to turn in one direction, say left, to make an interesting display appear in a window. The window was either marked with a big star or left unmarked. After learning to turn left to make the display appear, the babies were rotated 180 degrees. At what age did the babies begin to use the landmark to help them locate the window where the interesting display would appear?

A) 6 months
B) 11 months
C) 16 months
D) Acredolo found that few babies at any of these ages used the landmark appropriately.