摘要
第三变量指影响另外两个变量之间关系的变量,即调节变量和中介变量。心理科学和许多社会科学的研究走向深入的一个标志,就是对第三变量、第四变量的作用或者对多变量的交互作用,从思考转向实证。列举了第三变量的四个研究实例,将物理世界的四维时空与体育科学的多维课题做了类比。特别指出,真实世界复杂性总是比我们能够想像出的更加复杂,这一事实迫使科学家在研究中不断引入新的变量,并用最简洁的方式描述这种复杂性。因此,一项研究的质量,常常会取决于研究变量的维数,以及描述多维变量关系的简洁性。
The third variable, for instance, a moderator or a mediator, is a variable that influences relationship between another two variables. A sign that indicates development of psychological sciences and social sciences is to empirically testing the function of a third or fourth variable or the multivariate interaction instead of just thinking of these functions and interactions. Four examples of the function of a third variable were introduced and a comparison between the nature of physical world with four dimensions and the nature of sport science research with multi-dimension perspective was made. It was pointed out that the real world is always more complicated than what we can imagine. This very fact forces scientists to always introduce new variables and describe this complexity with most parsimonious approach. The quality of a research often depends, therefore, on the number of dimensions and parsimony in describing the relationship among these dimensions.
出处
《北京体育大学学报》
CSSCI
北大核心
2005年第6期758-760,共3页
Journal of Beijing Sport University
关键词
体育科学
中介变量
调节变量
四维时空
交互作用
Sport Science
mediator
moderator
four dimensions of time and space
interaction
