The effect of repetition on imitation from television during infancy Although television exposure levels during infancy are high, the impact of such exposure on learning is relatively unknown. Initial studies have shown that... R Barr,P Muentener,A Garcia,... - 《Developmental Psychobiology》...
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Two embodiments of a multi-dose syringe both include structure for indicating the selected amount of liquid to be injected. A first element and a second element coupled respectively to the syringe housing (24) and the plunger rod (50) are adapted for calibrated movement with respect to each ot...