The development of understanding of the spatial terms front and back.
D001828:Body Image; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D003463:Cues; D004193:Discrimination Learning; D005795:Generalization, Stimulus; D006801:Humans; D007804:Language Development; D009039:Motion Perception; D009949:Orientation; D002666:Psychology, Child; D012931:Social Environment; D013028:Space Perception