“In free elicitation, respondents are asked to verbalize the attributes they consider relevant in their perception of different product alternatives in the category under investigation. Memory probes (such as a set of brand names) may be used to assist the respondent in triggering the elicitation process.”
References
Steenkamp, J.-B.E.M., van Trijp, H.C.M., 1997. Attribute Elicitation in Marketing Research: A Comparison of Three Procedures. Marketing Letters 8, 153–165. https://doi.org/10.1023/A:1007975518638