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Opinion: Why mystery shopping isn't enough for retailers

By Dr. Pawan Singh

Customer experiences—whether they be a sale, an inquiry, a conversation with a manager or a walk down a store aisle—are at the heart of every customer relationship. These are the moments of truth for a company. Ultimately, these experiences drive customer satisfaction, loyalty and spending. So it is no wonder retailers are so interested in understanding exactly what the customer is experiencing.

Nearly every large retail brand employs or has employed mystery shopping to help management gain insight into their stores’ performance. For decades, mystery shopping has been the research tool of choice to measure customer experiences. While mystery shopping might work to identify issues on a case-by-case basis, it cannot generate the volume and reliability of intelligence that retailers need to truly improve the customer shopping experience. In the past, implementing an enterprise-wide system for collecting feedback from individual customers might have been cost-prohibitive and technologically daunting, however, enterprise feedback management (EFM) providers are perfecting this process. And evidence shows that customers are very willing to give feedback when asked.

If you’re using a mystery shopping program alone to generate customer intelligence and make strategic decisions instead of asking your customers for feedback directly, here’s what you might be missing:

Volume of Data

Mystery shopping is inherently time- and resource-intensive. Mystery shoppers have to travel to and spend time in each store trying to recreate as many true customer experiences as possible. The result is very few data points can be collected for a given store or entity each week or month.

If a mystery shopper has one unpleasant experience in a single store, that experience is then projected to the entire store and all of its employees for that time period. It’s not hard to see why this is problematic. Imagine obtaining 100 data points for that same store in a month where 75 percent of the customers said that a sales associate was “unfriendly” towards them. Now that’s a trend worth investigating.

Utilizing an EFM solution means more data points that yield higher reliability and greater ability to analyze issues at a granular level. Retailers can drill down to individual stores or departments and be confident that the feedback they are receiving is representative of the larger sample set. Statistically, mystery shopping cannot hold up at such a granular level where there are typically 3 or less data points on which to base analyses.

Validity of Data

Mystery shopping is prone to human bias and the law of small numbers. While there are many mystery shopping companies and individual mystery shoppers who truly understand how to properly conduct a mystery shop, there are many more who don’t. The industry is fragmented and quality control is limited. As a result, the reliability of each mystery shopping report becomes suspect. If a retailer is trying to derive insights from data points, which are unreliable, the conclusions generated are almost certain to be misleading if not downright wrong—leading the retailer down a path that ultimately harms their customers or misinforms their spending. And even if retailers are simply looking at mystery shopping reports as a window into customers’ experiences or as a means to highlight possible issues, they should want the view to be an accurate one.

With an EFM solution, which collects customer insights directly, the feedback and data points gathered will average out individual biases and provide a large enough sample set to make the insights statistically relevant.

Depth of Data

Mystery shoppers try to recreate a customer’s shopping experience. In doing this, they may “see” what a customer sees. However, they can never recreate what a customer might feel or a customer’s preferences. There is a gold mine of useful insights buried in customers’ experiences. How do they shop? Which brands are they interested in? Are they concerned with service or speed? Do they notice when the store isn’t clean?

Mystery shoppers cannot garner the answers to these questions, because they cannot be measured strictly by observation. A typical mystery shopping report might note that the check out area was cluttered. What it can never do is measure whether customers would (a) notice this and (b) if they did, how much of an impact it had on their satisfaction or likelihood to return to that store.

Companies cannot perfect every aspect of their stores. They must prioritize time and resources. With an EFM approach, companies can gain insights into what truly matters for customers, exploring every dimension of the shopping experience, and address the issues that, ultimately, are most important for customers.

Cost of Data

Because mystery shopping is resource-intensive, it is also costly. Each data point costs a lot, and incremental data points do not get cheaper. With current economic pressures, retailers are being forced to make hard decisions and cut costs across the board. Unfortunately, this creates a conflict of interest.

Many retailers solve this conflict by limiting the number of mystery shoppers utilized or the frequency with which they use them. However, this undermines the whole effort. Retailers are left with:

  • Not enough data points because they are cutting costs;
  • Snapshots in time with little-to-no data continuity because they are trying to cut costs; or
  • A situation where they are forced to spend a small fortune to get the volume of data they need, which might not be useful anyway due to the reasons stated previously.

The goal of customer feedback is to derive insights that inform operational improvements and strategic decisions. But if the feedback itself is unreliable, then one of two things will happen: 1) Trusting the data, retailers will make misguided decisions; or 2) Retailers will learn to mistrust the data.

It doesn’t take many wrong decisions or failed initiatives for a retailer to realize the data is not useful. And at that point, a mystery shopping program becomes a wasted expense.

By asking customers about their experience directly using an EFM solution, retailers can add data points without adding costs, which will reduce overall costs of getting the feedback. Ultimately, retailers won’t make costly mistakes when reacting to the feedback.

What Can You Do?

There are already hundreds, if not thousands, of customers who are actively experiencing nearly every aspect of shopping daily. Why not ask them? Today, enterprise feedback solutions, with the ability to collect detailed store-by-store customer data, are an inexpensive way of providing a retailer with exponentially more data points, deeper insights and less-biased feedback than mystery shopping. When deployed correctly, EFM solution should adhered to these principles:

  • Engage customers for feedback. Studies show that they are willing to share their experiences.
  • Ask customers for feedback properly. The feedback system should be simple for customers to access and use and it should be designed to minimize bias and fraudulent activity.
  • Act! The system should empower organizations to act on the feedback because customers will expect it. They have taken the time to provide valuable and reliable data to a company. They want to see it put to good use.

Dr. Pawan Singh is CEO of customer intelligence measurement company PeriscopeIQ. (Photo by PinkMoose.)

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  • Bob Phibbs
    about 20 months ago
    You're kidding me right? Mystery shoppers can't tell if a store is clean? A mystery shopping company worth its salt is never a wasted experience. A trained group of shoppers who have a tight shop and a great narrative section let a manager or owner "see" the entire experience. I have relied on literally 1000's of shops over the years as my eyes and ears. Is it expensive? Yes, but well worth it. It is a snapshot in time. With a regular schedule you can find out how well a store is training their employees to create an exceptional experience.

    Shoppers who respond to those 800 #s or web surveys are interested in getting a chance to win a shopping certificate - they are far from "pure" in their motives.

    I wrote about mystery shops extensively on this blog last year: http://www.retaildoc.com/blog/management/mystery
  • Robert Countryman
    about 20 months ago
    Hello,
    I just read your article and I would like to put you to the test. I am the CEO and owner of Nsite Inc. Market Research. My company has created great changes in our clients operations, customer service and their bottom line. We have literally taken franchises in a large corporation and made them number one. NUMBER ONE. How do we do it? Simply, easy and cost effective. At Nsite Inc. we raised the bar far higher than our competition as I knew that was key to my success and to that of my clients. We provide detailed, non-biased reports with hard timings and detailed one-on-one narratives. Give me a business that needs help in this or any economy and we will turn their business around. As I have always said, "This program pays for itself and then some."

    Robert Countryman
    Nsite Inc. Market Research
    www.nsiteinc.com
  • Mike Green
    about 20 months ago
    As the owner of Customer Impact mystery shopping, I do not completely disagree with you. We push all of our clients to do Mystery Shopping AND Customer Satisfaction surveys. The combination of the data is GOLD! Ninety Five percent of our clients however go with mystery shopping only.

    The bottom line is mystery shopping provides FACTS of what happened and CSAT surveys provide OPINONS on what you thought days or weeks after the visit. The information is apples and oranges. Mystery Shopping evaluates the actual service standards the employees are suppose to be following. Shoppers go in looking for cleanliness issues, timing each service and accurately noting details while at the location. Normal customers do not. Shoppers know the service standards in advance - customers do not hence there is no way they can say if they followed the standards. Customer Satisfaction surveys are GREAT for gathering opinions but worthless at providing facts like exact service times, names, procedures followed etc.

    People mostly fill out web and telephone surveys to get the free appetizer or other incentive. For those that think Customer Satisfaction surveys are the only way to go, try gathering that data without offering a reward and see how many people participate. Again, the answer is do use BOTH methods of evaluations to get the REAL picture on customer service.

  • Steven Di pietro
    about 20 months ago
    Mystery Shopping does not purport to be the sole silver bullet measurement. It is 'one' of the ways you can measure what is happening in retail.

    Any system which purports to be that silver bullet should be viewed with skepticism, whether is be ABC system or EFM.

    There is a very good reason why you can't just depend on Customers to tell you experience. Because they don't always know. Ask an annoyed customer how long they waited in line and they will exaggerate. Ask a customer an unprompted question about past experience and they will forget (and perhaps make up an answer).

    Customers cannot give the depth of a Mystery Shopper. However, real customers can provide other insights. That is the exact point. You need a balance, you need a complete picture from multiple sources.
  • David Rich
    about 20 months ago
    In this article, "Opinion: Why Mystery Shopping Isn't Enough For Retailers", Dr. Singh gives us just that…his opinion. And, while he does identify some of the possible foibles of mystery shopping, most clients of mystery shopping and virtually all suppliers of mystery shopping are well aware of these limitations and work hard to guard against their negative impact. As with so many tried and true procedures, improvements can always be made. But to fail to avail oneself of the unique advantages of mystery shopping’s observational data, would be to deny the retail and services industry of a valued tool. Let’s examine several of Singh’s opinions.
    His opinion that, “[mystery shopping] cannot generate the volume and reliability of intelligence that retailers need….” is patently wrong. And, as he goes on to say, “..[while] collecting feedback from individual customers might have been cost-prohibitive and technologically daunting, EFM providers are [now] perfecting this process.” The technology industry is certainly minimizing the costs of aggregating input from customers, but it can never control the quality nor the reliability of these customers’ responses. Nor, can it collect substantial and detailed amounts of information from individual customers due to fatigue and errors in reporting. Mystery shoppers, on the other hand, are trained on what to observe and are supervised with quality controls; individual customers aren’t. So, it seems reasonable to assume that data from skilled shoppers will, overall, be more reliable than that of customers. Singh bases his opinion on numbers. He would have us rely on the limited and less specific data that can be collected from a large number of customers, albeit unreliable, versus the more carefully observed and precisely reported data from an admittedly smaller sample of mystery shoppers. But here’s where Singh appears ignorant of the practices of most mystery shopping vendors. Data will only be reported at a level, (store, district, region, etc.) and on a periodic basis (monthly, quarterly, etc.) that sampling statistics will attest to being statistically robust. No mystery shopping vendor, and no retail ops executive is likely to make a store level decision for a month, if only five shops have been made.
    His next opinion, dealing with “volume of data”, is similarly flawed, and for many of the same reasons. He implies that because mystery shopping is “inherently time- and resource-intensive”, that it is somehow flawed. Those of us in the industry believe these aspects are its very strength; this is why mystery shoppers’ observations are cherished by to retailers – because of the time and intensity that went into their collection. In Singh’s view of mystery shopping, a single shopper, interacting with an imperfect employee somehow “poisons the well” having his or her observations somehow generalized to the entire chain. Users of mystery shopping results certainly see the fallacy of this accusation.
    In discussing “the validity of data”, Singh assigns human bias only to mystery shoppers. Somehow, in Singh’s world, customers’ responses are to be trusted completely. But, if they happen to be wrong, Singh tells us,“the data points will average out…”. Dr. Singh: in a large sample, with half of the customers being incorrectly positive and half being incorrectly negative the average is still worthless, no matter how large the sample! Large samples of untrained observers (customers) will still produce useless information, no matter how many customers are involved! So the answer isn’t simply in numbers, even though EFM may be a splendid way to amass large volumes of information.
    Singh’s opinion of the “depth of the data”, is a point on which we can agree – but with a slightly different conclusion. Yes, we can agree that mystery shoppers can’t help us understand customers’ feelings, needs and decision processes…that’s why there’ll always be the need for complimentary customer data (satisfaction surveys, experience audits, etc.). However, there is a complimentary list of topics for which customer samples are entirely inappropriate. Consider the interest at Headquarters in how well store level personnel follow policies and procedures. The “audit form” a mystery shopper will use to structure his or her store observation, very frequently institutes different scenarios to see how the service providers deliver. There may also be compliance issues that are critical to be maintained (Was the shopper’s id requested? Was an ABC license displayed in full view, etc.). The recall or report of customers can’t be trusted for either of these needs.
    Customer data falls short on both of these topics in two very important ways: completeness and immediacy. Audit forms developed for mystery shoppers’ use are usually very thorough and informative. They identify a specific interaction and counsel the shopper on cues to look for and specifics to record. Again, customers couldn’t be relied upon to provide such thorough information. Secondly, mystery shoppers will generally record all of their observations immediately after experiencing them (in a mall coffee shop; in their car in the parking lot, etc.). Their information and responses are fresh and likely very complete. Customer data is normally conducted within 12 to 48 hours of the experience…during this time, recall and specificity deteriorate.
    In discussing costs, Singh makes an obvious observation; everyone is trying to control costs. However, abandoning a proven source of extensive and rich data for a source of cheap and voluminous data isn’t the answer. More and more we find smart users of our mystery shopping services coping with reduced budgets by rotating shops through districts or regions, to allow an adequate sample to be accumulated with a smaller budget. This way all stores may be observed throughout the year, but not necessarily every period. Headquarters still gets a steady stream of trustable information, but collected from smaller units of the Company each time period.
    As it is with so many questions, the answer for shoppers versus customers should not be one or the other, but a more strategic allocation of issues to the source that can provide the best information. We collect our fair share of customer satisfaction data, but we never sell that source as a panacea for all management needs. Mystery shopping and customer experience reports are both meaningful and complimentary; not conflicting and competitive.

  • Tulio Del cid
    about 20 months ago
    As a Director for an overseas marketing research firm we found your article quite profound. We all most keep in mind that Mystery Shopper is a technique that must be initiated with the end in mind. It is a procedure that generates critical (simple?)information to a customer's dashboard. Mystery Shopper is not a purpose in itself. Mystery Shopper definitely provides critical information. Definitely every company needs to practice it. Most defenitely it is a wise investment and mystery shopper as well as all marketing research tecniques contribute to every company well being in the US and abroad. God Bless
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