This post first appeared on Thesislink in January 2018.
In the red corner, weighing in at a hefty time commitment and a massive transcription job, we have… INTERVIEWS!
In the blue corner, weighing in at a stack of paper and variable data quality, we have… SURVEYS!
In the battle of the qualitative data collection methods, surveys and interviews both pack quite a punch. Both can help you figure out what your human participants are thinking; how they make decisions, how they behave, and what they believe. Traditionally, both involve questions (which you ask as the researcher) and answers (which your participants contribute). But despite their similarities, surveys and interviews can yield very different results.
One of the most crucial decisions to make before your data collection is which method/s to use. The last thing you want to do is get halfway through interviewing 50 people, only to realise that you really should have surveyed them instead.
Here are a few differences to think about as you consider which data collection method is best for your research.
| Survey | Interview | |
| Questions | · Often many · Simple / short-answer · Multiple-choice, scaled, or free-text | · Few (ideally 6-8) · In-depth · Open-ended |
| Format | On paper or online | In person or on the phone / Skype |
| Data relevance | Variable depending on the participants’ understanding of instructions | Easier to keep participants on-topic |
| Good for | Capturing simple information in numerical or short-text form | Capturing discursive or complex information on participants’ thoughts, feelings, behaviours, and beliefs |
| Ease for participants | Easy to fill out if kept simple | Requires a time commitment |
| Ease for researchers | Easy to bulk-process online surveys and collate results, but still requires some interpretation | Requires time and effort to conduct, transcribe, and analyse interviews |
| Design process | Must carefully design questions and instructions | Must carefully design questions and practice good interview techniques |
