After training, all subjects received five posttest tasks: box task, transfer task, appearance-reality task, sources task and number conservation task.
训练后，被试接受5种后测任务：盒子任务、转移任务、外表-事实任务、来源任务和数量守恒任务。
After training, all subjects received five posttest tasks: box task, transfer task, appearance-reality task, sources task and number conservation task.
训练后，被试接受5种后测任务：盒子任务、转移任务、外表-事实任务、来源任务和数量守恒任务。
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