A control question is a carefully crafted inquiry designed to assess the accuracy and reliability of a respondent’s answers in a survey or interview. These questions are strategically placed throughout the questionnaire to gauge the respondent’s level of understanding and attentiveness, as well as to identify any potential biases or inconsistencies in their responses. By comparing the answers to control questions with the rest of the survey data, researchers can ensure the validity and credibility of their findings. In essence, control questions act as a quality control measure in research, helping to maintain the integrity and accuracy of the data collected.