A further weakness is misinterpretation of questions. For example a participant may not understand a question and as the researcher is not present, they cannot ask for clarification meaning they could leave the question or give invalid information. Moreover, the researcher could misinterpret/not understand the participants answer and again cannot ask for clarification, lowering the internal validity. Unlike in an interview, where the researcher is present so the participant/researcher can ask for clarification, increasing the internal validity.