I am doing research on domestic violence and the methods used to measure violence in intimate relationships.

I stumbled upon the CTS method which is allegedly used in most population samples.

This method only measures the tactics used by a partner in a relationship to deal with conflicts. It does not measure the causes or consequences of those tactics.

I read that the purpose of this method is to eliminate the subjective evaluation of violence by the respondent and the researcher interpreting the answers as well.

However, I could not find reliable sources that prove that elimination of subjective evaluation is the purpose of this method. It certainly seems plausible but even the founder of this method, Murray A. Strauss, does not mention anything about subjectivity.

Are there any reliable sources for this?