the effects of firm generated content in social media on ...the effects of firm generated content in...
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The Effects of Firm Generated Content in Social Media on Customer Behavior: An Empirical Examination Ashish Kumar, Assistant Professor, School of Business, Aalto University Ram Bezawada, Associate Professor, School of Management, University at Buffalo Rishika Rishika, Clinical Assistant Professor, Darla Moore School of Business, University of South Carolina Ramkumar Janakiraman, Associate Professor, Darla Moore School of Business, University of South Carolina P.K. Kannan, Professor of Marketing, Robert H. Smith School of Business, University of Maryland
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Social Media Spending and Dilemma
Social media spending is expected to grow faster than any other form of online marketing
• Forrester Research (2011)
Total social media advertising spending has increased worldwide ($17.74 billion in 2014 vs. $11.36 billion in 2013 - an increase of 56.2%)
• eMarketer (2015)
Marketers are concerned about measuring the returns on investment from social media
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Research Questions
Systematic empirical examination of social media engagement on customer-firm relationship
• Leverage a unique dataset
• Use individual level data
• Connect customer social media engagement to their actual behavior
• Examine multiple aspects of customer-firm relationship for the same set
of customers
• Analyze firm generated content (FGC) of social media engagement
• Examine features/postings of the social media site
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Research Issues
Develop a modeling framework for analyzing the effectiveness of FGC
• Causal effect of FGC • Operationalization of FGC
Relate the FGC to customer-firm relationship
• Customer spending (transaction side) • Cross-buying behavior (relationship side)
Consider the role of other marketing mix
• Television advertising • Email
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Literature Review
Link between User Generated Contents (e.g., online reviews) and Outcomes (e.g., sales)
• Chevalier and Mayzlin (2006); Liu (2006); Godes and Silva (2012) • Blogs—Onishi and Manchanda (2012); Gopinath et al. (2013) • YouTube—Yoganarasimhan (2012) • eBay Germany—Algesheimer et al (2010) • Viral Marketing —Schulze et al. (2014) • Promotional Sales Campaign—Danaher and Dagger (2013)
Our Contribution • Our focus on FGC is more granular and we examine both promotional and non-
promotional marketing communications • Marketing mix variables; traditional advertising • Multiple dimensions of FGC— valence, receptivity, and susceptibility
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Conceptual Framework
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Firm Generated Content (FGC)
Vpost – Valence of posting (Naïve Bayes Algorithm/Classifier to classify the postings into positive, negative, and neutral sentiment) Rpost – Total number of likes/share/comment (Receptivity) FGCSuscept – FGC susceptibility of customer (construct from survey)
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Model: DID (1)
Error Structure Heterogeneity
Handling Self-Selection Issue: Using Propensity Score Matching (PSM)
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Model: Treatment Effect (TE)
Estimated on Random as well as Matched Sample
latent utility that customer derives by participating in the firm’s social media site and thereby choosing to receive FGC.
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Identification
Unobserved factors can influence customers’ decision to engage and their subsequent behavior (i.e., endogeneity/self-selection issues)
• Propensity Score Matching • Two distinct customer groups
• Treatment (participate) and control (do not participate)
• Data from time periods pre and post launch of social media site
• Treatment effect model explicitly models participation
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Model Estimation
Bayesian inference using MCMC methods • Hierarchical framework to capture heterogeneity
Conjugate priors for the parameters
50,000 draws for the MCMC with a burn-in of 40,000 • Monitor for convergence
PSM and TE for endogeneity issue
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Research Context: Data
Large N.Y. state retailer • Operates multiple stores and specializes in selling wine and
similar products
August 2009: The retailer started having a presence in a major social networking site
• Marketing campaign that encouraged customers to join the social media site
• But, no incentives were given to join
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Data: Sample Selection Multi-step process
• Survey to 5000 randomly selected customers from the firm’s database • Identify customers who participate in the firm’s social media page • Match the survey with transaction data of the retailer based on full
names/demographic/residence location information
Treatment group customers: 412 customers who are active on the firm’s social media site
Control group customers: do not participate in the firm’s social media page
• Use survey information and cross check with the social media site • Include customers who have similar demographics and loyalty as treatment group
customers • Matched selection based on Propensity Score
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Data: Time Line
Firm Launches Social Media
Page
August 15, 2009
March 2011
Consumers’ Participate by Either Joining,
Contributing or Both
Sample Selection: Treatment and Control
Consumers
Firm Tracks the Activity on Social Media Site
February 2011
Survey Sent to Consumers
Merging Social Media with Transaction Data
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Data: Variables Variable Description Variable Notation Variable Operationalization Mean SD
Social Media Participation Data and Traditional (TV Ad) & Digital (Email) Marketing Communications Data Firm Generated Content FGC Messages posted by the firm. (# of postings/week) 3.78 1.82 Customer Participation CustPar =1 if customer h participates in firm’s social media page at time t; 0 otherwise. Television Advertising TVAd Television ad based on gross rating point. (GRP/week) 40.79 26.42 Email Advertising Email Total number of emails sent by the firm that are opened by customer h during week t. (# of
emails opened/week/customer) 1.63 1.02
Customer Transaction Data Spending Behavior Spend Total dollar amount spent by customer h during week t on firm’s products.
($/week/customer) 14.34 7.26
Cross-buying Behavior CrossBuy Total number of distinct categories customer h purchased during week t. (# of distinct categories bought/week/customer)
3.23 1.24
Customer Experience CExp Duration of the relationship of customer h with the firm until week t. (# of weeks of relationship with focal firm/customer)
94.26 17.89
Promotion Depth Index PromD Weighted average of price cuts availed by customer h for week t across all product items purchased. (cents/ml/week)
.38 .65
Cross Category Promotion CrossP Proportion of categories bought on promotion by customer h for week t. (proportion of categories bought on promotion/week/customer)
.46 .21
Survey Data Time Spent on Social Network TimeOnSocialNet Time spent on social networks (from survey). (minutes/customer) 41.54 8.50 Online Social Profile OProf Number of online social profiles (# online social profile /customer) 2.47 1.15 Age Age Age of customer h. (years/customer) 45.46 18.52 Distance Dist Distance between the customer h and the focal store. (miles/customer) 5.17 8.06 Attitudinal Variables TechS
These constructs are measured via survey.
3.69 .80 SocialNet 2.77 1.22 PrivCon 1.55 .51 IMov 4.08 .65 SMov 2.88 .76 EscMov 2.12 .80
OEnt 2.77 .78 Gender Gender =1 if customer h is male; 0 otherwise. 47% Race Race =1 if customer h is white; 0 otherwise. 86% Note: Summary statistics for customer transaction data are unconditional on purchase occasions. The summary statistics are based on a matched pair of 412 customers from each of the treatment and the control groups.
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Model Free Evidence Average Difference in Differences: Purchase Behavior of Treatment vs.
Control Groups
The difference in the spending/cross-buying/profitability between treatment and control group customers is not significant in the pre period but is significant in the post participation period.
Outcome Variable Groups Post-FGC Pre-FGC Difference Difference-in-Differences Spending ($) Treatment Group 15.96 13.52 2.44**
(.92) 1.26** Control Group 14.53 13.35 1.18 (1.01)
Cross-buying Treatment Group 3.74 3.08 .66** (.25) .46** Control Group 3.15 2.95 .20 (.19)
Profit ($) Treatment Group 5.91 4.79 1.12** (.43) 1.02** Control Group 4.78 4.68 .10 (.09)
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Results: DID Variables Spending Cross-buying
TCust .0803 .0941 FGC .9851 .1291 TCust×FGC 1.3233** .4987** TCust×FGC×TVAd .0057** .0001** TCust×FGC×Email .0991** .0047** TCust×FGC×CExp .1686** .0797** TCust×FGC×TechS .2753** .0303** TCust×FGC×SocialNet .1906** .1523** TVAd .1373** .1733** Email .9268** .1242** CExp .7579** .336** TechS -.5285** -.2062** SocialNet -.5906** -.3596** PromoD 3.9708** --- CrossP --- .6949** Dist -.3019* -.0316 Gender .9660 .4133 Race .7214 .2093 Age .2778 .3005 Intercept 6.2314* 2.6182** Serial-correlation .0187* .0482 Cross-correlation .4765** Heterogeneity # of Observations 140080 Sample Size 824 LMD -56313.75 **p≤.01 (Parameter is significant at 99% level i.e., the 99% confidence interval does not contain 0) *p≤.05 (Parameter is significant at 95% level i.e., the 95% confidence interval does not contain 0) The sample size of 824 customers is based on a matched pair of 412 customers from each of the treatment and the control groups.
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Results: TE Model Variables Spending Cross-buying
FGC .1835** .1103** FGC×TVAd .0621** .0019** FGC×Email .1755** .1137** FGC×CExp .0450** .1228** FGC×TechS .0918** .0281** FGC×SocialNet .1091** .0956** TVAd .1082** .1218** Email 1.0258** .8954** CExp .5853** .2055** TechS -.1537** -.0975** SocialNet -.1976** -.4158** PromoD 2.2350** --- CrossP --- .5707** Dist -.0394* -.0385 Gender .9690 .1114 Race 1.0673 .1102 Age .6973 .1844 Intercept 6.6342* 1.2867* Serial-Correlation .0076* .0128 Cross-Correlation .4124* Heterogeneity # of Observations 66980 Sample Size 788 LMD -75752.36 **p≤.01 (Parameter is significant at 99% level i.e., the 99% confidence interval does not contain 0) *p≤.05 (Parameter is significant at 95% level i.e., the 95% confidence interval does not contain 0) The sample size of 824 customers is based on a matched pair of 412 customers from each of the treatment and the control groups.
Variables Participation PrivCon -.1766** IMov .2865** TechS .0521* SMov .0771** OEnt .0509** TimeOnSocialNet 1.1770** Gender .0095 Race -.0297 Age -.0043 Intercept -.4516* Cross-Correlation (Spending, Participation)
.1426**
Cross-Correlation (Cross-buying, Participation)
.0414
**p≤.01 (Parameter is significant at 99% level i.e., the 99% confidence interval does not contain 0) *p≤.05 (Parameter is significant at 95% level i.e., the 95% confidence interval does not contain 0)
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Discussion of Results
FGC has positive and significant effect on customer spending and cross buying
The interaction effects between FGC and television advertising and the interaction effects between FGC and email marketing are positive for customer spending and cross-buying
FGC has a greater effect on more experienced customers for both customer spending and cross-buying
FGC has a higher effect on customers who are more tech-savvy and those who are more prone to using social media.
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Implication: Sensitivity Analysis Type of Marketing Communication
Overall First six months
Last six months
Spending Cross- buying
Spending Cross- buying
Spending Cross- buying
Social Media (FGC) .0140 (.0027)
.0587 (.0035)
.0060 (.0007)
.0441 (.0061)
.0108 (.0023)
.0493 (.0049)
Digital Media (Email) .0913 (.0215)
.0433 (.0165)
.0799 (.0137)
.0409 (.0043)
.0888 (.0358)
.0408 (.0202)
Traditional Media (TV Ad) .1010 (.0745)
.0507 (.0038)
.0949 (.0023)
.0457 (.0202)
.0968 (.0097)
.0532 (.0085)
Notes: Calculation of elasticity is based on the results of the TE model. First 6 months refers to the period from August 2009 to January 2010 (first six months since inception of the firm’s social media page). Last six months refers to the period from October 2010 to March 2011 (last 6 months of our data’s post-FGC period). Standard errors are shown in parentheses.
The elasticities of FGC in the last six months with respect to spending and cross-buying are comparable to the corresponding elasticities from the first six months. This suggests that the effect of FGC is not purely due to novelty factors and implies that FGC can remain effective after the inception of a firm’s social media page
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Implication: Simulation Study
Synergistic Effects of FGC with TV Advertising and Email Marketing
Simulation Variables in the Model % Change in Spending
% Change in Cross-buying
Traditional Ad (TVAd) and FGC Main effects of FGC and TV 2.08 (.23)
1.06 (.14)
Main effects of FGC and TV and interaction effect between FGC and TV
3.11 (1.33)
1.90 (.85)
Incremental change 1.03 .84 Digital Ad (Email) and FGC Main effect of FGC and email 3.25
(.54) 1.54 (.35)
Main effects of FGC and email and interaction effect between FGC and email
5.27 (.68)
2.76 (1.18)
Incremental change 2.02 1.22 Notes: The base case is the TE model with the main effect of FGC but without TV and Email. All the models include the control variables that we presented in Equations (5)-(7). Standard errors are shown in parentheses.
Traditional and New Communication Media have Synergistic Effects with FGC
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Implication: Dimensions of FGC Elasticity Analysis: Effect of the Three Dimensions of FGC on Customer Behavior
Focal Dimension of FGC Spending Cross-buying
Valence .0128 (.0068)
.0285 (.0061)
Receptivity .0188 (.0020)
.0864 (.0162)
Susceptibility .0092 (.0032)
.0076 (.0028)
Notes: Calculation of elasticity is based on the results of the TE model. Standard errors are shown in parentheses.
FGC receptivity has the greatest impact followed by FGC valence and susceptibility
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Managerial Implication
Embrace Social Media • To connect, communicate, and nurture relationships with customers
Utilize Synergies across Media
• Exploit synergistic relationship between social media and other media used for marketing communication—(TV and emails)
Encourage Customer Participation • FGC has a greater impact on customers who have a greater tenure with the firm
Monitor FGC popularity
• FGC receptivity has the greatest impact.
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Conclusion
Our study offers key insights into the impact of FGC and contributes to both theory and practice
FGC helps in nurturing customer-firm relationship • Transaction side (Spending) • Relationship side (Cross buying)
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Limitation and Future Research
Examining the effectiveness of firm generated content across multiple social media(e.g., Facebook and Twitter)
Effect of FGC across multiple channels
Extension to other contexts (such as search goods, consumer packaged goods)
Detailed message level analysis (e.g., informative vs. persuasive)
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Thank You.