Experiment 2 had a randomized multigroup posttest design.
实验2采用随机多组后测设计。
参考来源 - 贝叶斯推理完成特点及影响因素·2,447,543篇论文数据，部分数据来源于NoteExpress
CONCLUSION: the 4 kinds of individual changing trends in pretest-posttest design show the problem of the individual change can't be ignored when we analyze the data of pretest-posttest design.
结论：总结了前后测量设计资料个体生长趋势的4种情况，提示我们在分析前后测量设计资料时个体自然生长问题不容忽视。
The study employed a quasi-experimental design of a non-random posttest control group;
本研究使用了一个定向控制的类似实验的设计来进行。
Then, it points out the whole procedure and the design of questions in the pretest and posttest.
随后详细描述了整个实验过程及前后测实验题目的设计。
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