Only 3.78% of Adults Have Got Both Doses of the Vaccine

Honestly, I didn’t want to write this piece. But when a cabinet minister of the government of India uses basic maths to mislead, it didn’t leave me with much of an option.

Here’s what Dr Harsh Vardhan, who is the minister of health and family welfare and science and technology, tweeted earlier in the day today.

Regular readers would know how much I hate when people don’t know when to use percentages and when to use absolutes. Or the fact that they know and still do it, to mislead.

Harsh Vardhan’s tweet has multiple problems. Let’s look at it pointwise.

1)  The minister points out that the government of India has provided more than 18 crore vaccines free to states for vaccination. This is for vaccinating people who are 45 or more. So far so good. The thing is that India has the second largest population in the world. As per the World Bank it was at 136.64 crore in 2019, with China’s population being at 139.77 crore. With China’s population barely growing and ours continuing to grow, by now, we might be within the touching distance of China to become the country with the largest population in the world.

So, when it comes to things that need to be provided to all the population or a significant chunk of it, India is bound to be at the top. Also, vaccinating the population is not a race. It is the right thing to do.

2) Given this, it makes sense to look at what proportion of the population over the age of 18 has been fully vaccinated, meaning it has gotten both the doses of the vaccine. That’s a useful metric.

As I write this, the dashboard on the Co-Win website tells me that 3.56 crore individuals have taken both the doses. There are around 94.3 crore Indians who are aged 18 and above. This means that around 3.78% of the population (3.56 crore expressed as a percentage of 94.3 crore), for whom vaccines are available, has been vaccinated.

Yes, you read that right. Less than 4% of those age 18 or above, have got both the doses of the vaccine. Of course, this explains why Dr Harsh Vardhan’s tweet is an absolute number and not in percentage terms. This situation prevails nearly four months after the vaccination programme started.

That’s the real figure to look at simply because the aim of vaccination is to achieve herd immunity. As Ryan A Bourne defines herd immunity in Economics in One Virus as “a situation where enough people have immunity that any further outbreak of the virus fails to accelerate because there are too few individuals susceptible to infection.” Vaccinating a significant chunk of the population moves us towards the situation. And we are nowhere near that, the world’s largest vaccine drive notwithstanding.

Data from the Financial Times, tells us that there are many nations in the world who have vaccinated a significant chunk of their population. This includes smaller nations like Israel and larger ones like United States. Very few countries where covid has spread as much as it has in India, have got a rate of vaccination as low as it is in the Indian case.

3) Also, what Dr Harsh Vardhan’s tweet does not tell us is that the rate of vaccination has been slowing down majorly over the last one month. During the week April 3 to April 9, the total number of vaccinations carried out stood at around 2.48 crore doses (includes both the doses). This has fallen every week since then and stood at around 1.16 crore doses, during the week May 1 to May 7. This fall of over 53% has happened primarily because the government was busy with elections and didn’t order enough vaccines until April 28, 2021.

4) When it comes to receiving the first dose, 13.49 crore Indians or 14.3% of the population that is being vaccinated has got the vaccine. On this parameter things look a little better for India.

To conclude, vaccinating a significant chunk of India’s population to achieve herd immunity, remains a real challenge. Further, while everyone cannot be vaccinated within a short-period, but misleading the country on it by misrepresenting data is not going to help anyone in anyway.

[email protected],000 points and Some Basic 5th Standard Maths That Some Journalists Still Need to Learn

Early morning today, the BSE Sensex, India’s most popular stock market index crossed 50,000 points during intra day trading.

Not surprisingly, this led to the bubbly being opened on the social media and business TV. These are celebrations which will be carried into the newspapers appearing tomorrow morning. This is hardly surprising given that every time the Sensex has crossed one of these major landmarks, the media has gone crazy celebrating it.

And I don’t have a problem with it, given that the media is in the business of cashing in on good sentiment or to put it more precisely, creating good sentiment and then cashing in on it. The days of what bleeds that leads, are long gone.

One of the ways of celebrating is through graphics and data. One such graphic was shared by the Twitter handle of Business Today. It basically plots the number of days the Sensex has taken over the years to move 10,000 points in the upward direction.

Hence, it plots the number of days, the Sensex took to cross the first 10,000 points, then move from 10,000 points to cross 20,000 points and so on, and finally, to move from 40,000 points to cross 50,000 points.

This is how it looks like.

Looking at the above chart, Business Today concludes that the Sensex moving from 40,000 points to crossing 50,000 points has been the fastest, as it has happened in just 415 days. This, as we can see, is the least number of days. The next fastest was between 10,000 points and crossing 20,000 points, which took 432 days, which is seventeen days more.

Yay, and that is a cause for huge celebration. Okay, Business Today, didn’t say that, I added it.

During the course of my nearly 18 years of writing for the business media, I have seen a lot of stupid charts and data being used to make a point, but this takes the cake.

Why? Simply because it doesn’t take fifth standard percentages into account.

The BSE Sensex is an index. Every index has a base value. The base value of the BSE Sensex is 100. So, when the BSE Sensex first rose from 100 points to 10,000 points in 5,942 days, it meant a rise of 9,900 points or 99 times the original value of 100 or 9900%.

In comparison, the rise between 40,000 points and 50,000 points is just 25%. So, what are we really comparing? Who are the editors clearing such graphics? Why are people being misled on such simple data points?

The question is how do we analyse this properly. The right way to do this is look at the average jump in percentage terms per trading session, in each bracket. So how do we calculate this? The Sensex moved up 9,900% in 5,942 sessions, when it crossed the first 10,000 points. Hence, it moved around 1.67% per trading session on an average (9,900% divided by 5,942 trading sessions), during the period .

Further, the Sensex moved 25% in 415 sessions, when it moved from 40,000 points to cross 50,000 points. Hence, it moved 0.06% on average per trading day (25% divided by 415 trading sessions), during the period. So, the movement of the Sensex between 40,000 points to crossing 50,000 points has been much slower than crossing the first 10,000 points.

Here is how the proper chart looks like.

What does this tell us? It tells us that the first 10,000 points were achieved the fastest. This was followed by the movement between 10,000 points and 20,000 points, where the average gain was 0.23% per trading session. The movement between 40,000 points and 50,000 points at 0.06% per trading session comes third.

Sorry for belabouring on this rather basic point but I get really irritated when people use mathematics and data to mislead, sometimes not even knowing that they are misleading.

One Basic Lesson in Investing from the Tata-Mistry Spat

Many media reports have been published around the spat that is currently on between Cyrus Mistry and the Tata Group. Mistry, till he was fired by the board, was the Chairman of the Tata Group of companies.

A report that has made it into the media over and over again, is that of the market capitalisation of the Tata Group of companies, falling by so many thousand crore, after Mistry was fired. Here are the links to a few of these reports.

Cyrus Mistry exit costs Tata Group companies Rs 26,472 cr in market-cap:  http://www.financialexpress.com/markets/indian-markets/cyrus-mistry-exit-costs-tata-group-companies-rs-26472-cr-in-market-cap/432492/

Tata group market cap falls Rs27,500 crore in three days

http://www.livemint.com/Money/orFsoUOMzsJCPTG8WOPSRJ/Tata-group-loses-Conglomerate-lose-Rs55000-crore-in-market.html

Investors in Tata stocks lose Rs 23,300cr in 2 days

Tata Group firms lose Rs 40,000 cr in market cap in three days

Group companies say Ta-Ta to Rs 26,000 crore market cap in three days

http://economictimes.indiatimes.com/articleshow/55103207.cms?utm_source=contentofinterest&utm_medium=text&utm_campaign=cppst

Tatas talk up stocks as sell-off hits Rs 55,000 cr

http://www.dnaindia.com/money/report-tatas-talk-up-stocks-as-sell-off-hits-rs-55000-cr-2268100

Tata Firms Lose Rs 21,000 Crore in Market Cap After Mistry Sacking (Press Trust of India)

What is common to all these newsreports? They talk in absolute terms i.e., the market capitalisation fell by so many thousand crore. They don’t talk about the fall in market capitalisation in percentage terms.

This is a huge mistake. Allow me to explain. Let’s say the market capitalisation of a stock was Rs. 100 crore. It has fallen by Rs. 20 crore and is now quoting at Rs. 80 crore. Let’s say the market capitalisation of another stock has also fallen by Rs. 20 crore is now quoting at Rs. 980 crore against the Rs. 1,000 crore earlier.

If we were to follow the formula of the Indian media, we would say that the total fall in market capitalisation of the two stocks has been Rs. 40 crore. But that means nothing, given that the fall in market capitalisation in the first case has been 20 per cent and in the second case has been 2 per cent. By adding the losses, we take this nuance out of the equation. It is important to remember that a fall in the market capitalisation of a stock is always with respect to the market capitalisation prevailing earlier.

Now let’s pay attention on one particular media report here, which said that the total fall in market capitalisation of the Tata Group of Companies between October 24, 2016 and October 27, 2016, was Rs 55,000 crore. Take a look at the following table. It lists out the the fall in market capitalisation of the Tata companies for the period under consideration.

 Name of the company Market Capitalisation (in Rs. Crore) Fall in market capitalisation As on October 24, 2016 As on October 27,2016 (in Rs. Crore) Tata Motors 1,80,114 1,48,096 32,018 Tata Consultancy Services 4,78,390 4,68,607 9,783 Tata Steel 41,393 37,610 3,783 Indian Hotels 12,836 10,882 1,954 Tata Communications 19,068 17,348 1,720 Tata Power 22,611 21,096 1,515 Tata Chemicals 14,713 13,502 1,211 Tata Global Beverages 9,710 8,814 896 Voltas 13,019 12,519 500 Tata Elxsi 4,151 3,884 267 Titan 33,487 33,270 217 Rallis India 4,592 4,379 213 Trent 6,759 6,580 179 Tata Coffee 2,517 2,364 153 Tata Metaliks 1,068 927 141 Tinplate Company of India 938 867 71 Tata Sponge Iron 982 916 66 Tata Teleservices (Maharashtra) 1,466 1,417 49 TRF 313 301 12 NELCO 217 207 10 Benares Hotels 146 140 6 Tayo Rolls 60 59 1

Source: Livemint

This table was shared by a senior editor of the Mint newspaper on Twitter. (I have changed it slightly to the extent of rounding off the numbers). The text accompanying the table stated: “#TataSons meltdown Conglomerate loses Rs. 55,000 crore in market cap in 3 days as #CyrusMistry ouster snowballs.”

The market capitalisation of the Tata companies fell by Rs. 54,765 crore between October 24,2016 and October 27, 2016. This has been rounded off to Rs. 55,000 crore. While Rs. 55,000 crore sounds like a huge number, it doesn’t really mean much in this case.

If we were to look at the situation in percentage terms, then the total market capitalisation of the Tata companies fell by 6.5 per cent, over the three-day period. While, this is huge, it doesn’t sound as big as saying that the market capitalisation has fallen by Rs. 55,000 crore. This is what the media has been doing.

Further, if one were to look at the table carefully, it is easy to see that the bulk of the fall in market capitalisation is because of one company and that is Tata Motors. Of the total fall in market capitalisation of Rs. 55,000 crore, Tata Motors is responsible for a fall of close to Rs. 32,000 crore or 58.2 per cent of the total fall.

How does the situation look once we adjust for this anomaly? Suddenly the total fall in market capitalisation is down to around Rs. 23,000 crore (or Rs. 22,747crore to be precise). In percentage terms this fall is around 3.4 per cent.

Now the situation doesn’t look as bad as it did earlier. Or to put it in other terms, if Tata Motors, is taken out of the equation, the media headlines are no longer as sexy (for the lack of a better term) as they originally sounded.

The point being that one Tata group stock i.e., Tata Motors has had to bear the brunt of the spat between the Tata Group and Cyrus Mistry. In fact, between October 24, 2016 and October 27, 2016, the price of the stock fell by 17.8 per cent.

The other big fall has been in the case of Indian Hotels. The market capitalisation of the stock fell by 15.2 per cent between October 24, 2016 and October 27, 2016. If we were to leave this stock out as well, the total fall in market capitalisation of the Tata Group of companies comes down to 3.2 per cent.

The investors in these cases perhaps did not like these stocks anyway, and were looking for an excuse to sell out of them. The Tata Group and Cyrus Mistry spat, just provided them an excuse for it.

The major point here is that we all like to look at absolute numbers. But that doesn’t really mean anything unless we take percentages into account. This is because a rise or a fall is essentially meaningless without taking the previous price or market capitalisation into account.

This is a tendency to concentrate on absolute numbers is visible in real estate investing as well. People tend to fondly remember anecdotal stories about friends, relatives, neighbours and others, who bought a flat for Rs. 10 lakh and sold it for Rs. 60 lakh. They do not factor in the expenses over the years or the time value of money.

And that is one of the reasons that has kept the real estate bubble going.

The column originally appeared in Vivek Kaul’s Diary on November 1, 2016

What happens when Mentally Agitated Teachers Harass Students (M.A.T.H.S)

Vivek Kaul

It ain’t what you don’t know that counts. It’s what you know that ain’t so – Will Rogers
The year was 1986. I was in the fourth standard. My maths teacher Mrs. Leila Abraham (popularly known as Mrs Cherian because her husband’s name was Cherian Abraham) had just asked us to get an Amul or a Cadbury chocolate for the next day’s class. She wanted to teach fractions through a bar of chocolate.
The idea was exciting enough to motivate a few students to blackmail their parents to get what she had asked for. Over the next few days she taught fractions to the class by breaking the bar into half, three fourths, one fourths and so on. Even the dullest students picked up the concept very quickly.
As my interest in the subject grew, the quality of teachers who taught me went rapidly downhill. The ordeal ended when I graduated with a BSc in Mathematics from St Xavier’s College, Ranchi.
The quality of teaching was so bad that before the last class in the third year started I wrote this on the blackboard: Mentally (M) Agitated (A) Teachers (T) Harassing (H) Students (S). An English professor in the college who was also the best quiz master going around in Ranchi had come up with this expansion for M.A.T.H.S.
Professor Pankaj Chattoraj who taught us co-ordinate geometry among other things, was supposed to take the last class. He was the best of the six professors who taught us. So the joke wasn’t really on him. He took it in a good spirit made a few more jokes, taught what he had to and left.
I have no numbers or research to back this but I feel that Maths ends up being taught by the worst teachers. The impact of bad teaching of Mathematics is clearly seen when people have to apply Maths.
Let me share a few examples which I have come across over the last few years.
Justice Markandey Katju in a recent column in The Hindu titled Professor, teach thyself wrote: “When I was a judge of Allahabad High Court I had a case relating to a service matter of a mathematics lecturer in a university in Uttar Pradesh. Since the teacher was present in court I asked him how much one divided by zero is equal to. He replied, “Infinity.” I told him that his answer was incorrect, and it was evident that he was not even fit to be a teacher in an intermediate college. I wondered how had he become a university lecturer (In mathematics it is impermissible to divide by zero. Hence anything divided by zero is known as an indeterminate number, not infinity).”
Rather ironically the teacher Katju castigated was right. Any non zero number divided by zero is infinity. But when zero is divided you get what is known as an indeterminate. The following example should explain things a little better:
A2 = A2
A2- A2= A2- A2
A(A-A)= (A-A)(A+A)
[A(A-A)/(A-A)] = (A+A)
A=A+A
A=2A
1=2
In the fourth step of the equation we are dividing (A-A) by (A-A) and that allows us to come to the fifth step i.e. A=A+A and which finally leads to 1=2.
Now it need not be said that one cannot be equal to two. When we divide zero by zero we can prove anything. Hence dividing 0 by 0 (which is what A-A is) is not allowed in Mathematics.
So I guess Justice Katju’s Maths teachers did not teach him the right thing here. Justice Katju’s being wrong did not harm anyone and was more confined to the realms of what we can call an esoteric argument. But there are occasions when a lack of basic understanding of maths can lead to totally wrong interpretations.
Recently ABP news (formerly Star News) ran a report with a headline “Mahangai ghati kya aapko pata chala kya?”.This was in response to the consumer price inflation falling to 9.86% in July against 9.93% in June. The report went onto show that how the prices of vegetables and a lot of other goods had gone up. So it then questioned that how was the government claiming that prices are down?
This again shows the lack of basic understanding of Maths. When inflation comes down no government can claim that prices are coming down. What they can only claim is that the rate of increase in prices is coming down. Let me explain this through an example.
If the price a product increases from Rs 10 to Rs 12, we say inflation is 20% ((Rs 2/Rs 10) x 100%). Let us say the next month the cost of the product goes up to Rs 13. What is the month on month inflation now? The inflation is 8.33% ((Re 1/ Rs 12) x 100%). Now the inflation has fallen from 20% to around 8.33%. Does that mean that price has fallen? No it hasn’t. What has fallen is the rate of increase in price, not the price.
This is something very basic which a lot of people don’t seem to understand. On more than one occasion in the past I have been asked by fairly senior colleagues in the media “But why aren’t prices falling, if inflation is falling?”.
Another common mistake that people make is that they add or subtract percentages. Take the case of what Jerry Rao (an alumnus of IIM Ahmedabad, founder of the IT company Mphasis Corporation, and the former head of consumer banking of Citibank in India) wrote in a column in the Indian Express on October 6,2008.
“If stock market wealth drops by 50 per cent in six months, we get concerned. We conveniently forget that it went up by 200 per cent over the previous two years. At the end of 30 months we are still 150 per cent ahead.” (Read the full article here)
At the end of 30 months we are not 150% ahead but 50% ahead. Let us say an individual invests Rs 100. A 200% gain on this would mean that Rs 100 invested initially has grown to Rs 300 ( Rs 100 + 200% of Rs 100). A 50% fall would mean Rs 300 has fallen to Rs 150 (Rs 300 – 50% of Rs 300). This in turn means that we are 50% (((Rs 150 – Rs 100)/Rs 100) x 100%) ahead and not 150% ahead, as was written.
So what this means in simple English is that a 50% loss can wipe off a 100% gain. Let us say an investor buys a stock at Rs 50. The stock does well and runs up to a price of Rs 100. What was the gain? The gain was Rs 50 (Rs 100- Rs 50). What was the gain in percentage terms? 100%. ((Rs 50/Rs 50) x 100%).
After achieving its peak, the stock started to fall and is back at Rs 50. What is the loss from the peak? Of course Rs 50 (Rs 100- Rs 50). But what is the loss in percentage terms? 50% ((Rs 50/Rs 100) x 100%).
The point I was trying to make was that a 50% loss can wipe off a 100% gain. Or to flip it around, a 100% gain would be needed to wipe off a 50% loss.
But the example that clearly takes the cake was when a former colleague remarked that sales of a company that she was tracking had fallen by 110%. Anyone who understands percentages wouldn’t make a remark like that. Anything cannot fall more than 100% (Unless we are talking about things like temperature which can become negative. Then the concept of percentage becomes meaningless). Let me elaborate. Let us say a product sells 700 units in a month. In the next month no units are sold. What does this mean? It means sales are down by 700 units or 100%.
On the flip side when it comes to gains, they can be unlimited. A product sells one unit in a month and in the next month it sells 71 units or 70 units more than the previous month. Or a gain of 7000%.
Now, theoretically, there is no upper limit to the number of units that the product can sell. And so there is no upper limit to the gains can that can be expressed in percentages.
These are a few examples of lack of basic understanding of Maths that came to my mind on this teachers’ day. The bigger question is why is there such lack of basic mathematics? My theory on this is that it all boils down to the way teachers teach mathematics in schools. The entire emphasis is on solving a problem, rather than trying to explain to students why we are trying to solve a problem, and then getting into the nitty gritty. In colleges, it gets even worse.
So it’s time we stopped respecting our Maths teachers and re-title them as Mentally Agitated Teachers Harassing Students.
(The article originally appeared on www.firstpost.com on September 5,2012, with a different headline. http://www.firstpost.com/living/what-your-maths-teacher-didnt-teach-you-at-school-444727.html)
(Vivek Kaul is a writer and can be reached at [email protected] After eleven years in school and eight years in college, from all that he was taught the only thing he partly remembers is some elementary mathematics)

People prefer 50% free to 33% lower price…

In recent research you found that “Shoppers prefer getting something extra free to getting something cheaper.” How did you come to that conclusion?
Our research examined the phenomenon of bonus packs in which the consumer gets a larger quantity for the same price. We contrast this offer with a standard price discount, where the consumer gets the same quantity for a lower price. Imagine that I am selling coffee beans, and I offer you 100 beans for Rs. 100 on a normal day. Then, one day, I offer you a 33% discount, so you receive 100 beans for Rs. 67. On another day, I offer you 50% extra (or free). You now get 150 beans for Rs. 100. But, I impose no limit on how many or how few coffee beans you can buy, on either day. So, on the day in which I offer 50% extra, you could quite easily have bought 100 beans for Rs. 67! Yet, most people prefer 50% more to a 33% lower price, even though the two options are economically equivalent! In fact, we find that when we offer 33% more and a 33% price discount (which is economically superior), people are indifferent.
Can you give us an example?
In India, particularly for products that are sold in bulk (such as dal, rice, cooking oil etc.) in the unorganized retail market, this tendency on the part of consumers to prefer free products is likely to be successfully employed by the retailer. In our research, we were able to increase sales of an inexpensive consumer packaged good by over 70% in a retail store, when we employed the extra/free bonus pack format relative to the price reduction format.
What sort of experiment did you carry out?
As I mentioned above, we conducted one experiment in a retail store, in which we varied the promotion format for one product (hand lotion) each week. All the other products in the store were not promoted, providing us a control for comparison. We measured sales volume during each of the weeks to compare consumer response to format variation, and found, as predicted, that offering a quantity increment yielded substantially higher sales than offering a price discount that was economically equivalent. We followed up this naturalistic study with a survey of adult consumers in a shopping mall, asking them to express their preference for options that were either reduced in price or featured an increase in quantity. We also asked our respondents to respond to some simple maths questions, to assess their computational skills. Again, as we expected, we found that those with better maths skills did not display this error, while those with poor maths skills displayed the erroneous preference for quantity increments.
Finally, we also showed that the error occurs for harmful as well as beneficial changes — people prefer a quantity decrease of 33% relative to a price increase of 50%, though both are economically equivalent.
What do people behave in this way?
Essentially, we demonstrate that this occurs because of “base value neglect” when dealing with percentages, a phenomenon akin to “denominator neglect”, a term coined by the illustrious psychologist Paul Slovic. According to this human tendency, people are not very good at performing arithmetic with complex forms such as logarithms, fractions, probability and percentages, because, for evolutionary reasons, the human brain has not evolved to perform these functions. For existence and survival, to find food and avoid becoming prey, we are quite successful as a species if we operate as “frequentists”, that is number counters. Hence, people treat percentages as whole numbers and make predictable errors in computation.
Do companies already realize that shoppers prefer something extra free rather than getting something cheaper?
Companies intuitively use some of this logic, but I am not sure they have thought this through the way we have. (If they had, our paper would not have been novel and would probably not have been published!). However, now that our paper has been published and has received widespread attention in the business press, I expect that companies will start experimenting with our results to assess whether and when they can profitably employ our theory and findings.
You have in the past said “errors in peoples’ judgments of the net effect of multiple price discounts on the same product or on different products in a bundle have implications for a variety of marketing settings including advertising, promotion, pricing and public policy”. Can you explain this in detail to our readers?
A classic problem in numerical competence with regard to the processing of percentage information is how people process multiple percentages. Think of the following example which first appeared in The New York Times and was quoted in the bestselling book How To Lie With Statistics (Huff 1954, 111):
“The depression took a stiff wallop on the chin here today. Plumbers, plasterers, carpenters, painters and others affiliated with the Indianapolis Building Trades Unions were given a 5 percent increase in wages. That gave back to the men one-fourth of the 20 percent cut they took last winter.”
A little thought will show that the maths is wrong here. If the workers were making \$100 at the beginning, and experienced a 20% cut, their wages had dropped to \$80. A subsequent 5% increase constitutes \$4, which is one-fifth, not one-fourth of the original wage cut! Even the venerable New York Times makes maths errors!
That was an interesting example!
Now, take this example to the marketplace. Imagine that a store offers a 20% off Diwali sale, and offers an additional 25% off on Diwali sweets. What is the total discount? It is not the sum of the two percentages (45%), it is actually, only 40%! But, people systematically ignore the base value and add up percentages as if they are whole numbers. The problem becomes even more interesting when there are gains and losses. Imagine if your stock portfolio goes up by 40% and then declines by 30%. You might think you are still better off from where you started, by 10%. But, you would be wrong — you are actually worse off by 2%!
So what are the practical applications of this?
The application of these errors in advertising, promotion and pricing should be obvious. Consumers can be tricked by stores into thinking an offer is better than it actually is. From a consumer welfare standpoint, this is obviously not a good thing. So, we suggest that, the scientific insight we offer can be used to improve consumer welfare, by the introduction of regulations to require purveyors of numerical information to present absolute as well as percentage information. Particularly with regard to consumer finance (credit card interest rates) or the petrol consumption improvement of a car, it is possible for consumers to be fooled by multiple percentage changes that appear beneficial, when they are in fact harmful.
In one of your articles you discuss a study which points out: a) price may exert a non-conscious influence on expectancies about product quality b) such expectancies may have an impact on actual product performance c) such expectancies can also be induced through non-price information such as advertising claims about product quality. Can you explain this in detail?
This was a fascinating study authored by Baba Shiv of the University of Iowa (now at Stanford) and his colleagues Dan Ariely and Ziv Carmon, about which I was invited to write a commentary. The essence of their research was as follows. Some people were given a drink that was claimed to enhance mental acuity. Half the people were told that the product was purchased at \$1.89 while the other half were told that the product, priced at \$1.89 was purchased at a discounted price of \$.89. Then, after they had drunk the liquid, they were given puzzles to solve. The group that drank the full-priced product solved significantly more puzzles (9.1) than the group that drank the discounted product (7.7)! Seemingly, people who drank the discounted drink expected that it would be less efficacious at increasing their mental acuity, and performed relatively poorly on the puzzle solving task! Their expectations sub-consciously influenced actual product performance. This is a powerful demonstration of the price-quality effect, a phenomenon that I have studied extensively over the last 25 years.
What is the learning for marketers here?
The remarkable thing about this research is the power of the placebo (as the authors term it). This placebo effect suggests that the human brain can be fooled into performing because it expects to perform. The implicit argument is that in many instances, psychology may be more important than engineering, in product design. The obvious learning for marketers is that consumers are subject to many subtle influences that have an impact on their subjective experiences. They may not be entirely rational and the creative and astute marketer is able to identify and exploit opportunities to influence consumer behavior through clever marketing.
Car dealers frequently draw customers into their establishment with the promise of an attractive advertised deal. However, upon arrival, the car buyer discovers that the deal does not apply to the model he wishes to buy. Nonetheless, after a few minutes of consultation with a ‘‘sales manager,’’ the salesperson returns with the news that an exception has been made and the deal has been approved. The buyer is relieved. Why does the dealership not simply offer the deal on the buyer’s preferred model in the ﬁrst place?