Which question type is best suited to ask if a customer would recommend a product?

The Net Promoter Score (NPS) is specifically designed to measure customer loyalty and satisfaction, particularly in relation to whether customers would recommend a product or service to others. This metric is based on a simple question: "On a scale from 0 to 10, how likely are you to recommend our product to a friend or colleague?"

The NPS method categorizes respondents into Promoters, Passives, and Detractors based on their scores, allowing businesses to gauge overall customer sentiment and the likelihood of referrals. The direct relationship between recommendation and customer loyalty makes the NPS the most effective choice for assessing a customer's willingness to promote a product.

In contrast, while Likert scales can provide valuable insights into customer attitudes and opinions across a range of statements, they do not directly address the likelihood of recommending a product in the specific way that NPS does. Choice questions can be useful for multiple-choice responses, but they lack the depth of sentiment captured by NPS. Text response questions allow for open-ended feedback, which can be insightful but do not provide easily quantifiable data regarding recommendation likelihood.