一般认为,只有实验法才能得出事物之间的因果关系。但是有些事物很难用实验进行操纵、控制,例如你想知道看暴力镜头的频率是否导致攻击性增强。现在有两种方法,无须实验,只要求出几个相关的系数,即可推论事物之间的因果关系。一、时间差相关法(Cross-lagged Panel Corrrelation,以下简称CLPC)CLPC 是一种根据相关数据推论因果关系的准实验设计方法。CLPC 的最简单的情况是, Generally believed that only the experimental method can be drawn causal relationship between things. But there are things that are hard to experiment with and control, such as whether you want to know if the frequency of a violent shot leads to increased aggression. Now there are two ways to experiment without causation, and as long as we get a few related coefficients, we can infer the causal relationship between things. First, the time difference correlation method (Cross-lagged Panel Corrrelation, hereinafter referred to as CLPC) CLPC is a corollary causal relationship based on the relevant data of the quasi-experimental design. The simplest case of CLPC is,