12/08/2026
The Questionnaire Trap
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One thing most researchers sometimes forget is that;
🚫More questions do not automatically mean better data.
A 60-item questionnaire is not necessarily more rigorous than a well-designed 20-item instrument.
As questionnaires get longer:
👉🏽Attention drops.
👉🏽Respondents start rushing.
👉🏽Random ticking increases.
👉🏽Fatigue sets in.
👉🏽Dropout rates can rise....and although there is no such thing as the "perfect data", still, the realities above isn't something any researcher hopes for.
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For many academic survey questionnaires, around 15–22 substantive items is a sensible target when the research design allows it. The real test, however, is completion time and whether every item serves a research purpose.
The same applies to interviews.
A good semi-structured interview guide should contain around 12–15 substantive questions, organised into clear themes, rather than 30 questions that leave the participant exhausted and the researcher drowning in unnecessary data.
👉🏽And no, this does not mean shorter is always better.
👉🏽It means FOCUSED is BETTER.
The goal is not to ask everything you possibly can.....as tempting as that can be.
The goal is to ask what you ACTUALLY NEED to answer your RESEARCH QUESTIONS.
Sometimes, a shorter, focused instrument produces better-quality data than an unnecessarily lengthy one.
In research, length is not the same thing as rigour.
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12082026
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