An important characteristic of mature spatial cognition is the ability to encode spatial locations in terms of relations among landmarks as well as in terms of vectors that include distance and direction. In this study, we examined children's use of the relation "middle" to code the location of a hidden toy, using a procedure adapted…

Studied semantic and cognitive development of Korean-speaking and English-speaking children. Found that categorization and a naming spurt emerged later in Korean speakers than in English speakers, while means-ends abilities and success/failure words emerged earlier in Korean speakers than in English speakers. Also, Korean-speaking mothers…