In the past, people focus more on communication content than on its way, which brings short-periodeffect.
以往人们对媒介影响的研究，关注传播内容大于传播形式，这只能看到短期效果。
2
Results Obtain the estimates of treatment effect, time periodeffect, sequence effect and individual variation separately.
结果分别获得处理效应、阶段效应、顺序效应以及个体变异的估计。
3
White said his team wanted to see whether living in greener urban areas had a lasting positive effect on people's sense of well-being or whether the effect also disappeared after a period of time.