【简答题】Interest in historical methods has arisen less through external challenge to the validity of history as an intellectual discipline and more from internal quarrels among historians themselves.
【单选题】External / Internal validity The students were carefully matched for social status, subject area, ethnicity, education level, parental smoking, and exposure to targeted advertising.
【判断题】External validity refers to whether the manipulation of the independent variables or treatments actually caused the observed effects on the dependent variables.
【简答题】(c) Acting as an external consultant to Semer, discuss the validity of the proposed strategy to increase gearing, and explain whether or not the estimates produced in (b) above are likely to be accura...