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Modeling the Real Return on Marketing Investments<br />July 1, 2011<br />BY: PETER-CAIN<br />A key decision facing the brand manager is how best to allocate an often limited marketing budget across a wide set of marketing activities. This is a challenging task in a competitive market place involving complex marketing strategies, where competitor activity can often upset careful planning. The conventional approach to answering this question is the single equation marketing mix mode3l, which formulates a demand equation as a function of selected marketing drivers. Response parameters are then estimated using classical regression techniques and used to calculate ROI and inform optimal allocation of the marketing budget.<br />Such models, however, focus solely on incremental volume, often recommending a marketing budget allocation skewed towards promotional activity: short-run sales respond well to promotion, yet are less responsive to media activity – particularly for established brands. This, however, ignores the long-run view: that is, the potential brand-building properties of successful media campaigns on the one hand and the brand-eroding properties of heavy price discounts on the other. Acknowledging and quantifying these features is crucial to a complete ROI evaluation and a more strategic budget allocation.<br />To address this issue, the marketing mix model needs to be re-structured to quantify both short-run and long-run variation in the data. The former is used to calculate short-term ROI on marketing investments in the usual way. The latter measures the evolution of brand preferences over time. This generates an evolving baseline which, when combined with marketing investments and consumer tracking information, allows a quantification of long-run ROI.<br />Conventional Marketing Mix Modeling<br />Market mix modeling employs econometric techniques to quantify the contribution of a set of driver variables to the variation in a sales response variable. The model building process involves three key steps: selecting key marketing driver variables, defining the manner in which sales are linked to the driving variables and the nature of sales adjustment to the change in driving variables. This final step is known as dynamic specification, where lagged value of sales can be added and/or lags applied directly to the variables themselves. For example, advertising TVR data traditional appear in adstocked form to capture the carry-over effects that we would intuitively expect from successful media campaigns: namely, where the effects are felt beyond the period of execution due to product purchase cycles and/or media retention in the mind of the consumer.<br />Such models focus solely on the short- to medium-term returns on marketing investments. Traditional approaches to modeling the long-run impact of marketing activity build primarily on the basic dynamics mentioned above. For example, the long-run effects of television advertising are often estimated using adstocked TVR data with very high retention rates – indicative of heavy persistence of past levels of advertising weight. Alternatively, long-run effects are derived simply by multiplying the short-term effects by there, based on results in Lodish et al (1995). Promotion modeling can also be extended to incorporate the negative effects of post-promotional dips – reflecting pantry loading, where stocking up in response to promotional deals today cannibalizes product sales tomorrow.<br />All such extensions, however, miss an extremely important component of the long-run view. That is, the extent to which marketing activity can help – or hinder – the development of underlying brand strength. It is well known that advertising investments tend to generate little incremental return, yet serve to provide a long-run brand-building function. On the other hand, excessive reliance on promotions can denigrate brand image, eroding equity in the brand. How can we test for and quantify these effects? One approach is to exploit the fundamentals of time series regression analysis.<br />Advanced Marketing Mix Approaches<br />All marketing mix models involve the analysis of time-ordered sales observations. It is well known that any time series can be decomposed into trend, seasonal and cyclical components. Consequently, mix models are essentially time series models with marketing elements woven around this basic structure. The trend component represents long-run evolution of the sales series and is crucial to a well-specified marketing mix model. In the conventional approach, the trend is represented by the regression intercept plus a linear deterministic growth factor. The result is a model with a linear trending base. If no observable positive or negative growth is present, then the base is forced to follow a fixed horizontal line. Trends in sales data rarely behave in such simple deterministic ways. Many markets, ranging from Fast Moving Consumer Good (FMCG) to automotive, exhibit trends that evolve and vary over time. This is ignored in the conventional mix model. However, when it comes to understanding the long-run brand-building impact of marketing on sales, this is a serious oversight. Quantifying brand-building effects requires an understanding of how the long-run component of the time series behaves: that is, how base sales behave. This is not possible if base sales are pre-determined to follow a constant mean level or a deterministic growth path, as any true long-run variation in the data is suppressed. To overcome this, we need to specify the trend component as part of the model itself. This allows us to simultaneously extract both short and long-run variation in the data, giving a more precise picture of the evolution of long-run consumer demand and short-run incremental drivers. 1 The result is a marketing mix model with a truly evolving baseline. <br />An example for an FMCG face cleansing product is illustrated in Figure 1.<br />Modeling the Long-Run Effects of Marketing<br />Evolutionary or dynamic baseline mix models open the way to long-run analysis. This is simply because it is then possible to evaluate whether marketing activity plays a role in driving base sales evolution. If so, it can then be said to exert a long-run or trend-setting impact, in addition to any short-run incremental contribution. For example, it is well known that incremental returns to TV advertising tend to be small. However, successful TV campaigns also serve to build trial, stimulate repeat purchase and maintain healthy consumer brand perceptions.<br />In this way, advertising can drive and sustain the level of brand base sales. Conversely, excessive price promotional activity tends to influence base sales evolution negatively – via denigrating brand perceptions. Only by quantifying such indirect effects can we evaluate the true ROI to marketing investments and arrive at an optimal strategic balance between them.<br />To estimate these effects requires linking marketing investments to brand perceptions through to long-run base demand from marketing mix analysis. In this way, a sequential path is identified measuring the indirect impact of marketing activities on long-run consumer demand. <br />The flow is illustrated in Figure 2 and some example data are illustrated in Figure3, which plots the evolving baseline o Figure 1 alongside TVR investments and brand perception data relating to product fragrance and perceived product value.<br />Calculating the Full Long-Run Impact and Total ROI<br />Estimated indirect impacts of marketing investments are part of the long-run sales trend and as such generate a stream of effects extending into the foreseeable future: positive for TV advertising and negative for heavy promotional weight. These must be quantified if we wish to measure the full extent of any indirect effects. To quantify the current value of future indirect revenue streams, we use a net present value approach. This essentially decays the value of each subsequent period’s indirect effect as loyal consumers eventually leave the category and/or switch to competing brands. A discount rate is used to reflect increasing uncertainty around future revenue.<br />The indirect ‘base-shifting’ impact over the model sample, together with the decayed present value of future revenue streams quantifies the total long-run impact of advertising and promotional investments. These are then added to the weekly revenues calculated from the short-run modeling process. Benchmarking final net revenues against initial outlays allows calculation of the total ROI to marketing investments.<br />Managerial Implications<br />The long-run modeling process delivers two key commercial benefits. Firstly, it allows improved strategic budget allocation. Results from conventional models tend to favor intensive promotional activity over media investments. This often leads to a denigration of brand equity in favor of short-run revenue gain. Factoring in long-run revenues allows us to redress this balance in favor of strategic brand-building marketing activity. Secondly, it improves media strategy. Understanding which key brand characteristics drive brand demand can help to inform the media creative process for successful long-run brand building.<br />Conclusions<br />We’ve offered an alternative approach to market mix modeling which explicitly models both the short-and long-run features of the data. Not only does this provide more accurate short-run marketing results but, when combined with evolution in intermediate brand perception measures, allows an evaluation of the long-run impact of marketing activities. This framework demonstrates two key issues.<br />Firstly, if we wish to measure long-run marketing revenues it is imperative that econometric models deal with the evolving trend or baseline inherent in most economic time series: conventional marketing mix models are not flexible enough to address this issue.<br />Secondly, it demonstrates that intermediate brand perception data can be causally linked to brand sales and used to improve long-run business performace. This directl addresses the reservations over the use of primary research data raised by Binet et al (2007).<br />Reference<br />Binet, L. and Field, P. (2007) ‘Marketing in the Era of Accountability’, IPA Datamine, World Advertising Research Centre.<br />Cain, P.M. (2005), ‘Modelling and forecasting brand share: a dynamic demand system approach’, International Journal of Research in Marketing, 22, 203-20<br />Lodish, Leonard M., Magid Abraham, Stuart Kalmenson, Jeanne Livelsberger, Beth Lubetkin, Bruce Richardson, Mary Ellen Stevens. (1995). ‘How TV advertising works: A meta-analysis of 389 real world split cable TV advertising experiments’. Journal of Marketing Research, 32 (May) 125-139.<br />Dr. Peter Cain is SVP, Head of Science and Innovation EMEA and Global Accounts at MarketShare. With over 12 years experience in the marketing industry, he brings best-practice econometric and analytical solutions across a range of verticals.<br />
Modeling the real return on marketing investments
Modeling the real return on marketing investments
Modeling the real return on marketing investments
Modeling the real return on marketing investments

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Modeling the real return on marketing investments

  • 1. Modeling the Real Return on Marketing Investments<br />July 1, 2011<br />BY: PETER-CAIN<br />A key decision facing the brand manager is how best to allocate an often limited marketing budget across a wide set of marketing activities. This is a challenging task in a competitive market place involving complex marketing strategies, where competitor activity can often upset careful planning. The conventional approach to answering this question is the single equation marketing mix mode3l, which formulates a demand equation as a function of selected marketing drivers. Response parameters are then estimated using classical regression techniques and used to calculate ROI and inform optimal allocation of the marketing budget.<br />Such models, however, focus solely on incremental volume, often recommending a marketing budget allocation skewed towards promotional activity: short-run sales respond well to promotion, yet are less responsive to media activity – particularly for established brands. This, however, ignores the long-run view: that is, the potential brand-building properties of successful media campaigns on the one hand and the brand-eroding properties of heavy price discounts on the other. Acknowledging and quantifying these features is crucial to a complete ROI evaluation and a more strategic budget allocation.<br />To address this issue, the marketing mix model needs to be re-structured to quantify both short-run and long-run variation in the data. The former is used to calculate short-term ROI on marketing investments in the usual way. The latter measures the evolution of brand preferences over time. This generates an evolving baseline which, when combined with marketing investments and consumer tracking information, allows a quantification of long-run ROI.<br />Conventional Marketing Mix Modeling<br />Market mix modeling employs econometric techniques to quantify the contribution of a set of driver variables to the variation in a sales response variable. The model building process involves three key steps: selecting key marketing driver variables, defining the manner in which sales are linked to the driving variables and the nature of sales adjustment to the change in driving variables. This final step is known as dynamic specification, where lagged value of sales can be added and/or lags applied directly to the variables themselves. For example, advertising TVR data traditional appear in adstocked form to capture the carry-over effects that we would intuitively expect from successful media campaigns: namely, where the effects are felt beyond the period of execution due to product purchase cycles and/or media retention in the mind of the consumer.<br />Such models focus solely on the short- to medium-term returns on marketing investments. Traditional approaches to modeling the long-run impact of marketing activity build primarily on the basic dynamics mentioned above. For example, the long-run effects of television advertising are often estimated using adstocked TVR data with very high retention rates – indicative of heavy persistence of past levels of advertising weight. Alternatively, long-run effects are derived simply by multiplying the short-term effects by there, based on results in Lodish et al (1995). Promotion modeling can also be extended to incorporate the negative effects of post-promotional dips – reflecting pantry loading, where stocking up in response to promotional deals today cannibalizes product sales tomorrow.<br />All such extensions, however, miss an extremely important component of the long-run view. That is, the extent to which marketing activity can help – or hinder – the development of underlying brand strength. It is well known that advertising investments tend to generate little incremental return, yet serve to provide a long-run brand-building function. On the other hand, excessive reliance on promotions can denigrate brand image, eroding equity in the brand. How can we test for and quantify these effects? One approach is to exploit the fundamentals of time series regression analysis.<br />Advanced Marketing Mix Approaches<br />All marketing mix models involve the analysis of time-ordered sales observations. It is well known that any time series can be decomposed into trend, seasonal and cyclical components. Consequently, mix models are essentially time series models with marketing elements woven around this basic structure. The trend component represents long-run evolution of the sales series and is crucial to a well-specified marketing mix model. In the conventional approach, the trend is represented by the regression intercept plus a linear deterministic growth factor. The result is a model with a linear trending base. If no observable positive or negative growth is present, then the base is forced to follow a fixed horizontal line. Trends in sales data rarely behave in such simple deterministic ways. Many markets, ranging from Fast Moving Consumer Good (FMCG) to automotive, exhibit trends that evolve and vary over time. This is ignored in the conventional mix model. However, when it comes to understanding the long-run brand-building impact of marketing on sales, this is a serious oversight. Quantifying brand-building effects requires an understanding of how the long-run component of the time series behaves: that is, how base sales behave. This is not possible if base sales are pre-determined to follow a constant mean level or a deterministic growth path, as any true long-run variation in the data is suppressed. To overcome this, we need to specify the trend component as part of the model itself. This allows us to simultaneously extract both short and long-run variation in the data, giving a more precise picture of the evolution of long-run consumer demand and short-run incremental drivers. 1 The result is a marketing mix model with a truly evolving baseline. <br />An example for an FMCG face cleansing product is illustrated in Figure 1.<br />Modeling the Long-Run Effects of Marketing<br />Evolutionary or dynamic baseline mix models open the way to long-run analysis. This is simply because it is then possible to evaluate whether marketing activity plays a role in driving base sales evolution. If so, it can then be said to exert a long-run or trend-setting impact, in addition to any short-run incremental contribution. For example, it is well known that incremental returns to TV advertising tend to be small. However, successful TV campaigns also serve to build trial, stimulate repeat purchase and maintain healthy consumer brand perceptions.<br />In this way, advertising can drive and sustain the level of brand base sales. Conversely, excessive price promotional activity tends to influence base sales evolution negatively – via denigrating brand perceptions. Only by quantifying such indirect effects can we evaluate the true ROI to marketing investments and arrive at an optimal strategic balance between them.<br />To estimate these effects requires linking marketing investments to brand perceptions through to long-run base demand from marketing mix analysis. In this way, a sequential path is identified measuring the indirect impact of marketing activities on long-run consumer demand. <br />The flow is illustrated in Figure 2 and some example data are illustrated in Figure3, which plots the evolving baseline o Figure 1 alongside TVR investments and brand perception data relating to product fragrance and perceived product value.<br />Calculating the Full Long-Run Impact and Total ROI<br />Estimated indirect impacts of marketing investments are part of the long-run sales trend and as such generate a stream of effects extending into the foreseeable future: positive for TV advertising and negative for heavy promotional weight. These must be quantified if we wish to measure the full extent of any indirect effects. To quantify the current value of future indirect revenue streams, we use a net present value approach. This essentially decays the value of each subsequent period’s indirect effect as loyal consumers eventually leave the category and/or switch to competing brands. A discount rate is used to reflect increasing uncertainty around future revenue.<br />The indirect ‘base-shifting’ impact over the model sample, together with the decayed present value of future revenue streams quantifies the total long-run impact of advertising and promotional investments. These are then added to the weekly revenues calculated from the short-run modeling process. Benchmarking final net revenues against initial outlays allows calculation of the total ROI to marketing investments.<br />Managerial Implications<br />The long-run modeling process delivers two key commercial benefits. Firstly, it allows improved strategic budget allocation. Results from conventional models tend to favor intensive promotional activity over media investments. This often leads to a denigration of brand equity in favor of short-run revenue gain. Factoring in long-run revenues allows us to redress this balance in favor of strategic brand-building marketing activity. Secondly, it improves media strategy. Understanding which key brand characteristics drive brand demand can help to inform the media creative process for successful long-run brand building.<br />Conclusions<br />We’ve offered an alternative approach to market mix modeling which explicitly models both the short-and long-run features of the data. Not only does this provide more accurate short-run marketing results but, when combined with evolution in intermediate brand perception measures, allows an evaluation of the long-run impact of marketing activities. This framework demonstrates two key issues.<br />Firstly, if we wish to measure long-run marketing revenues it is imperative that econometric models deal with the evolving trend or baseline inherent in most economic time series: conventional marketing mix models are not flexible enough to address this issue.<br />Secondly, it demonstrates that intermediate brand perception data can be causally linked to brand sales and used to improve long-run business performace. This directl addresses the reservations over the use of primary research data raised by Binet et al (2007).<br />Reference<br />Binet, L. and Field, P. (2007) ‘Marketing in the Era of Accountability’, IPA Datamine, World Advertising Research Centre.<br />Cain, P.M. (2005), ‘Modelling and forecasting brand share: a dynamic demand system approach’, International Journal of Research in Marketing, 22, 203-20<br />Lodish, Leonard M., Magid Abraham, Stuart Kalmenson, Jeanne Livelsberger, Beth Lubetkin, Bruce Richardson, Mary Ellen Stevens. (1995). ‘How TV advertising works: A meta-analysis of 389 real world split cable TV advertising experiments’. Journal of Marketing Research, 32 (May) 125-139.<br />Dr. Peter Cain is SVP, Head of Science and Innovation EMEA and Global Accounts at MarketShare. With over 12 years experience in the marketing industry, he brings best-practice econometric and analytical solutions across a range of verticals.<br />