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Conference Sessions - Jesse H. Jones Graduate School of ...

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Thursday, 3:30pm - 5:00pm<br />

■ TD01<br />

Legends Ballroom I<br />

Choice II: Effects on ...<br />

Contributed Session<br />

Chair: Linda Court Salisbury, Assistant Pr<strong>of</strong>essor, Boston College, CSOM,<br />

Fulton 441, 140 Commonwealth Ave., Chestnut Hill, MA, 02467, United<br />

States <strong>of</strong> America, salisbli@bc.edu<br />

1 - Incorporating State Dependence in Aggregate Market<br />

Share Models<br />

Polykarpos Pavlidis, PhD Candidate, Simon <strong>Graduate</strong> <strong>School</strong> <strong>of</strong><br />

Business, University <strong>of</strong> Rochester, Rochester, NY, 14627,<br />

United States <strong>of</strong> America, pavlidisp2@simon.rochester.edu,<br />

Dan Horsky, Minjae Song<br />

An empirical investigation <strong>of</strong> individual household level data in twenty CPG<br />

categories (IRI Marketing Data set, 2008) uncovers that state dependence is a<br />

significant determinant <strong>of</strong> consumers’ choices in all twenty product categories. In<br />

light <strong>of</strong> this finding, we examine whether and how one can incorporate state<br />

dependence in a demand model <strong>of</strong> frequently purchased goods estimated with market<br />

level data. Aggregated data is more <strong>of</strong>ten available and is frequently used in applied<br />

research in marketing and economics. The incorporation <strong>of</strong> consumer choice<br />

dynamics in these market share models can potentially increase their applicability and<br />

improve their predictive behavior.<br />

2 - Complexity Effects on Choice Experiment-based<br />

Model Performance<br />

Benedict Dellaert, Erasmus University Rotterdam, P.O. Box 1738,<br />

Rotterdam, 3000 DR, Netherlands, dellaert@ese.eur.nl,<br />

Bas Donkers, Arthur van Soest<br />

Understanding what drives choice experiment-based model performance helps firms<br />

to better evaluate future marketing actions when using such models. This research<br />

investigates choice experiment complexity (i.e., the number <strong>of</strong> alternatives, number<br />

<strong>of</strong> attributes, and utility similarity between the most attractive alternatives) as a key<br />

factor to affect choice model performance both within and between complexity<br />

conditions. The results show that complexity has a negative direct effect on choice<br />

model performance. However, this effect is contingent on consumers’ decision time<br />

used relative to the number <strong>of</strong> normative elementary information processes (EIPs)<br />

that the decision task requires, which we take as an approximation <strong>of</strong> the degree <strong>of</strong><br />

simplification in the consumer’s decision process. When consumers spend less time<br />

per normative EIP, this increases choice model performance within a given choice<br />

complexity condition. However, it decreases choice model performance between<br />

complexity conditions. We also introduce a practical modeling approach that captures<br />

these direct and indirect effects <strong>of</strong> choice complexity and hence enables predictions<br />

between different choice complexity conditions.<br />

3 - The Interplay <strong>of</strong> Reference Dependence and Choice Set Formation in<br />

Replacement Decisions<br />

Lianhua Li, PhD Student, University <strong>of</strong> Alberta, Faculty <strong>of</strong> Business,<br />

Edmonton, AB, Canada, lianhua@ualberta.ca, Paul Messinger,<br />

J<strong>of</strong>fre Swait<br />

The literature presents evidence supporting the expectation <strong>of</strong> a strong preference for<br />

the status quo good in replacement decisions. Prospect theory predicts this tendency;<br />

however, prospect theory ignores possible choice set formation effect, assuming that<br />

all goods (status quo and new goods) will be evaluated, using the status quo as<br />

reference point, and then compared to reach a final choice. Nonetheless, several<br />

explanations for the exaggerated preference for status quo goods in prior literature<br />

predict the possibility <strong>of</strong> choice set formation revolving around status quo products.<br />

We therefore hypothesize that replacement decisions are subject to both referencedependence<br />

and choice set formation effect. To test this hypothesis, we develop and<br />

compare three choice models: a pure reference-dependence model, a pure choice set<br />

formation model, and a hybrid model that accounts for both reference-dependence<br />

and choice set formation. Using experimental choice data, we find that the hybrid<br />

model greatly outperforms the first two models, which strongly suggests the<br />

coexistence <strong>of</strong> reference-dependence and choice set formation in replacement<br />

decisions. We also show that omitting either process leads to estimation bias in the<br />

parameters <strong>of</strong> the included process. Just as the reference-dependence model based on<br />

prospect theory has led to improved understanding and prediction <strong>of</strong> choice, we<br />

believe “upgrading” it to include choice set formation effect will further enhance<br />

these benefits.<br />

4 - Does Choice Set Formation Drive the Diversification Effect?<br />

A Model and Experimental Evidence<br />

Linda Court Salisbury, Assistant Pr<strong>of</strong>essor, Boston College, CSOM,<br />

Fulton 441, 140 Commonwealth Ave., Chestnut Hill, MA, 02467,<br />

United States <strong>of</strong> America, salisbli@bc.edu, Fred M. Feinberg<br />

Diversification – exhibiting greater variety as multiple choices are made together, in<br />

advance <strong>of</strong> consumption – is a robust and important phenomenon (e.g., purchasing<br />

groceries, queuing Netflix films). Studies <strong>of</strong> diversification tend to focus on choice<br />

alone, conceptualizing it as inherently comparative. This precludes the possibility that<br />

diversification is driven largely by choice set formation, wherein each item needs to<br />

27<br />

MARKETING SCIENCE CONFERENCE – 2011 TD02<br />

surpass a (latent) threshold to even be compared with others available. We examine<br />

diversification via an experimental choice sequence task and dual-component<br />

stochastic model (choice set formation; choice-from-set). The experiment manipulates<br />

two key diversification drivers in prior literature: whether choices are made all at<br />

once (“simultaneously”) vs. separately (“sequentially”), and the relative attractiveness<br />

<strong>of</strong> available options. We find that diversification may be primarily a phenomenon <strong>of</strong><br />

choice set formation: people do penalize their previously chosen option, but only for<br />

simultaneous choices, and only in the set formation portion <strong>of</strong> the model. Thus, prior<br />

model-based evidence <strong>of</strong> variety-seeking in diversification may have been<br />

misinterpreted as a discounting <strong>of</strong> an item’s features at the stage <strong>of</strong> choice, as opposed<br />

to a failure to ‘consider’ the option at all. That is, failing to methodologically<br />

incorporate choice set formation may erroneously suggest that consumers are using a<br />

diversification choice heuristic when they may instead be diversifying the alternatives<br />

in their ‘consideration set.’ Furthermore, results suggest that the expected number <strong>of</strong><br />

items thus ‘considered’ is substantially greater in multiple-, versus single-, item<br />

choice.<br />

■ TD02<br />

Legends Ballroom II<br />

Online Advertising - II<br />

Cluster: Internet and Interactive Marketing<br />

Invited Session<br />

Chair: Harald van Heerde, University <strong>of</strong> Waikato, Private Bag 3105,<br />

Hamilton, 3240, New Zealand, heerde@waikato.ac.nz<br />

1 - Connecting Social Media with Television Advertising and<br />

Online Search<br />

Yanwen Wang, PhD, Emory University, 1300 Clifton Rd,<br />

Atlanta, GA, 30033, United States <strong>of</strong> America,<br />

yanwen_wang@bus.emory.edu<br />

In an attempt to muscle through turbulent economic times, the U.S. automobile<br />

industry has embraced social media. Ford pioneered the practice <strong>of</strong> hiring syndicated<br />

bloggers to serve as brand advocates, while much <strong>of</strong> BMW’s recent success is<br />

attributed to its engagement with consumers across Facebook, Twitter, and YouTube.<br />

While there is research looking at the impact <strong>of</strong> social media on firm outcomes – be<br />

they sales or other metrics like stock-returns – little, if any, research is undertaken on<br />

understanding how social media impact consumers’ online search for automobiles.<br />

Understanding the impact <strong>of</strong> social media on consumer search is very important as<br />

online search informs consumer’s consideration-sets, which in turn affect their final<br />

choice <strong>of</strong> an automobile. By combining three unique datasets, namely: (i) consumerlevel<br />

click-stream search data for automobiles, (ii) consumer-directed television<br />

advertising and (iii) social media (volume and sentiments <strong>of</strong> buzz spanning blogs,<br />

newspaper articles, newsgroups, online forums, etc.), this study sets out to answer<br />

the following questions. One, how does the volume and sentiment <strong>of</strong> online buzz<br />

impact the volume <strong>of</strong> a consumer’s online branded search? Two, how do these effects<br />

compare with the impact <strong>of</strong> television advertising on online search? Three, are there<br />

synergies between online buzz and television advertising on online search? How do<br />

these effects systematically vary across consumers and geographic markets? After<br />

calibrating our model with these aforementioned data, we <strong>of</strong>fer insights for<br />

advertising and targeted advertising interventions to undo negative buzz generated<br />

through product recalls.<br />

2 - Investigating Advertisers’ View <strong>of</strong> Online and Print Media:<br />

Complements or Substitutes?<br />

Shrihari Sridhar, Assistant Pr<strong>of</strong>essor <strong>of</strong> Marketing, Michigan State<br />

University, Eli Broad College <strong>of</strong> Business, N300 Marketing<br />

Department, East Lansing, MI, 48824, United States <strong>of</strong> America,<br />

sridhar@bus.msu.edu, S. Sriram<br />

Faced with declining pr<strong>of</strong>its, print newspapers have turned hybrid, catering to both<br />

print and online audiences. As a multi-channel platform, the hybrid newspaper needs<br />

readers and advertisers across both print and online channels to be on board. This<br />

requires knowledge not only about the interrelatedness in demand between readers<br />

and advertisers, but also about whether advertisers perceive the print and online<br />

media-channels to be complements or substitutes. Extant research has investigated<br />

whether readers find online and print newspapers to be complements or substitutes.<br />

But less is known about how advertisers, who provide 80% <strong>of</strong> newspaper revenue,<br />

choose to allocate their media dollars between the online and print version <strong>of</strong> a<br />

multi-channel platform. From a newspaper’s standpoint, understanding advertisers’<br />

preferences for allocating advertising expenses between print and online media would<br />

be useful to develop targeted pricing and salesforce strategies. We use advertiser-level<br />

data from a large hybrid newspaper in the US from 2005-2010, pertaining to the<br />

amount <strong>of</strong> media dollars purchased across three outlets (print-weekday, print-Sunday<br />

and online) by quarter. We estimate a multiple discrete-continuous extreme value<br />

model (MDCEV) <strong>of</strong> advertisers’ simultaneous choice (i.e., which combination <strong>of</strong><br />

media to advertise in) and the corresponding expenditure in each medium. While<br />

performing this analysis, we control for temporal variation in print and online<br />

readership as well as salesforce efforts directed at each advertiser. We subsequently<br />

investigate how this decision is affected by advertisers’ baseline utility for each<br />

medium, growth in the readership base across channels and also by their perceived<br />

substitutability/complementarity across channels.

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