The article stands as the third part of a series about the question answering process during standardized surveys and elaborates the judgment making phase. The first part deals with attitude questions. In this regard, relevant theories of the nature of attitude are explained (true attitude model, construal model, the belief-sampling model); context effects that influence decision-making processes in the course of answering are described (i.e. the inclusion/exclusion model) and the effect of affective reactions like emotions is mentioned. In the second part concrete strategies and criterions of decision making are showed, which respondents use in the course of survey question answering process. This is done both with regard to factual and attitudinal questions.