The Remembering and Forgetting of Advertising
Abstract
How should advertising be scheduled? Should an advertising schedule be concentrated in an intensive “burst,” or should it be spread out over a longer period? For the same expenditure a relatively small number of consumers can be exposed to advertising many times, or a larger number can be exposed a smaller number of times. This unique study demonstrates how answers to these kinds of questions can be obtained.
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Brands and Branding: Research Findings and Future Priorities
Keller, K. L., & Lehmann, D. R. (2006) · Marketing Science · doi:10.1287/mksc.1050.0153 · Cited by 2,323 · see citing works
How advertising works: what do we really know?
Vakratsas, D., & Ambler, T. (1999) · Journal of Marketing · doi:10.1177/002224299906300103 · Cited by 1,436 · see citing works
Memory Factors in Consumer Choice: A Review
Bettman, J. R. (1979) · Journal of Marketing · doi:10.1177/002224297904300205 · Cited by 422 · see citing works
Advertising Repetition: A Critical Review of Wearin and Wearout
Pechmann, C., & Stewart, D. W. (1988) · Current Issues and Research in Advertising · doi:10.1080/01633392.1988.10504936 · Cited by 341 · see citing works
Planning Media Schedules in the Presence of Dynamic Advertising Quality
Naik, P., Mantrala, M., & Sawyer, A. G. (1998) · Marketing Science · doi:10.1287/mksc.17.3.214 · Cited by 302 · see citing works
“These models used simulations based on the empirical results of two field experiments (Strong 1974; Zielske 1959).1 These models were not particularly successful and provided no way to suggest an optimal schedule or to definitively decide 1See also the comment of Simon (1979) on Zielske’s (1959)…”
MethodAdvertising Repetition: A Meta-Analysis on Effective Frequency in Advertising
Schmidt, S., & Eisend, M. (2015) · Journal of Advertising · doi:10.1080/00913367.2015.1018460 · Cited by 308 · see citing works
Time and Consumer Behavior: An Interdisciplinary Overview
Jacoby, J., Szybillo, G. J., & Berning, C. K. (1976) · Journal of Consumer Research · doi:10.1086/208644 · Cited by 299 · see citing works
Easley, R. W., Madden, C. S., & Dunn, M. G. (2000) · Journal of Business Research · doi:10.1016/s0148-2963(98)00079-4 · Cited by 275 · see citing works
Janiszewski, C., Noel, H., & Sawyer, A. G. (2003) · Journal of Consumer Research · doi:10.1086/374692 · Cited by 268 · see citing works
“Laboratory (e.g., Singh et al. 1994) and field (Zielske 1959) evidence show that memory for repeated material improves as the time between presentations of advertising material increases, especially when there is a delay between the second presentation of the stimulus and the memory test (Singh et…”
BackgroundLittle, J. D. C., & Lodish, L. M. (1969) · Operations Research · doi:10.1287/opre.17.1.1 · Cited by 256 · see citing works
The Development of the Hierarchy of Effects: An Historical Perspective
Barry, T. E. (1987) · Current Issues and Research in Advertising · doi:10.1080/01633392.1987.10504921 · Cited by 230 · see citing works
Effects of Humor in a Radio Advertising Experiment
Duncan, C. P., & Nelson, J. E. (1985) · Journal of Advertising · doi:10.1080/00913367.1985.10672944 · Cited by 202 · see citing works
Advertising Pulsing Policies for Generating Awareness for New Products
Mahajan, V., & Muller, E. (1986) · Marketing Science · doi:10.1287/mksc.5.2.89 · Cited by 193 · see citing works
Effects of television brand placement on brand image
van Reijmersdal, E. A., Neijens, P. C., & Smit, E. G. (2007) · Psychology and Marketing · doi:10.1002/mar.20166 · Cited by 173 · see citing works
Brand Advertising As Creative Publicity
Ehrenberg, A. S. C., Barnard, N. R., Kennedy, R., & Bloom, H. (2002) · Journal of Advertising Research · doi:10.2501/jar-42-4-7-18 · Cited by 163 · see citing works
How Fast Do Students Forget What They Learn in Consumer Behavior? A Longitudinal Study
Bacon, D. R., & Stewart, K. A. (2006) · Journal of Marketing Education · doi:10.1177/0273475306291463 · Cited by 158 · see citing works
Recognition as a Measure of Learning from Television Commercials
Singh, S. N., & Rothschild, M. (1983) · Journal of Marketing Research · doi:10.2307/3151827 · Cited by 128 · see citing works
In Pursuit of an Ideal: The Editorial and Literary History of the Journal of Marketing
Kerin, R. A. (1996) · Journal of Marketing · doi:10.1177/002224299606000101 · Cited by 128 · see citing works
Howell, R. A. (2014) · Environment and Behavior · doi:10.1177/0013916512452428 · Cited by 113 · see citing works
“Marketing research shows that exposure to several linked advertisements over time increases recall and can contribute to desired attitudes (Vakratsas & Ambler, 1999; Zielske, 1959).”
BackgroundAdvertising Wearout: An Experimental Analysis
Craig, C. S., Sternthal, B., & Leavitt, C. (1976) · Journal of Marketing Research · doi:10.1177/002224377601300406 · Cited by 116 · see citing works
“In fact, most academic marketing research as well as that done commercially does not examine the persistence of repetition (exceptions include [6, 7, 18, 20]).”
BackgroundRepetition in Media Models: A Laboratory Technique
Ray, M. L., & Sawyer, A. G. (1971) · Journal of Marketing Research · doi:10.1177/002224377100800102 · Cited by 116 · see citing works
“randomly assigned various weights or schedules of advertising [38, 41, 42, 47].”
BackgroundRecall, Recognition, and the Measurement of Memory for Print Advertisements
Bagozzi, R. P., & Silk, A. J. (1983) · Marketing Science · doi:10.1287/mksc.2.2.95 · Cited by 110 · see citing works
Howell, R. (2010) · Global Environmental Change · doi:10.1016/j.gloenvcha.2010.09.004 · Cited by 110 · see citing works
“Research about advertising suggests that people need to see messages more than once in order to remember and respond to them (Vakratsas and Ambler, 1999; Zielske, 1959), although the effects of a film which is deliberately watched may be different from those of a brief advertisement.”
BackgroundDynamic and Competitive Effects of Direct Mailings: A Charitable Giving Application
van Diepen, M., Donkers, B., & Franses, P. H. (2009) · Journal of Marketing Research · doi:10.1509/jmkr.46.1.120 · Cited by 104 · see citing works
Appleton-Knapp, S. L., Bjork, R. A., & Wickens, T. D. (2005) · Journal of Consumer Research · doi:10.1086/432236 · Cited by 101 · see citing works
Predicting Advertising Pulsing Policies in an Oligopoly: A Model and Empirical Test
Villas‐Boas, J. M. (1993) · Marketing Science · doi:10.1287/mksc.12.1.88 · Cited by 87 · see citing works
Does irritation induced by charitable direct mailings reduce donations?
van Diepen, M., Donkers, B., & Franses, P. H. (2009) · International Journal of Research in Marketing · doi:10.1016/j.ijresmar.2009.03.007 · Cited by 78 · see citing works
“Similarly, repeated advertising exposures can lead to familiarity and liking of a company and can prevent forgetting over time (Zajonc 1968; Zielske 1959).”
BackgroundA Micromodeling Approach to Investigate the Advertising-Sales Relationship
Blattberg, R. C., & Jeuland, A. P. (1981) · Management Science · doi:10.1287/mnsc.27.9.988 · Cited by 77 · see citing works
Seasonality in the Consumer Response to Milk Advertising with Implications for Milk Promotion Policy
Kinnucan, H. W., & Forker, O. D. (1986) · American Journal of Agricultural Economics · doi:10.2307/1241541 · Cited by 73 · see citing works
Pulsing Policies for Aggregate Advertising Models
Feinberg, F. M. (1992) · Marketing Science · doi:10.1287/mksc.11.3.221 · Cited by 71 · see citing works
Optimal Advertising Strategies
Sasieni, M. W. (1989) · Marketing Science · doi:10.1287/mksc.8.4.358 · Cited by 70 · see citing works
McQuarrie, E. F., & Mick, D. G. (2009) · International Journal of Advertising · doi:10.2501/s0265048709200576 · Cited by 65 · see citing works
Kronrod, A., & Huber, J. (2019) · International Journal of Research in Marketing · doi:10.1016/j.ijresmar.2018.11.008 · Cited by 44 · see citing works
Media Influences on Marketing Communications
Stewart, D. W., Pavlou, P., & Ward, S. (2002) · Routledge eBooks · doi:10.4324/9781410602428-18 · Cited by 55 · see citing works
A Month in the Life of GrouponPreprint
Byers, J. W., Mitzenmacher, M., Potamias, M., et al. (2011) · arXiv (Cornell University) · doi:10.48550/arxiv.1105.0903 · Cited by 52 · see citing works
Abnutzbarkeit und Nutzungsdauer von Marken Ein Beitrag zur steuerlichen Behandlung von Warenzeichen
Meffert, H., & Burmann, C. (1998) · Gabler Verlag eBooks · doi:10.1007/978-3-322-90529-1_4 · Cited by 49 · see citing works
Going for gold: Investigating the (non)sense of increased advertising around major sports events
Gijsenberg, M. J. (2013) · International Journal of Research in Marketing · doi:10.1016/j.ijresmar.2013.09.004 · Cited by 48 · see citing works
Media Factors: A Review Article
Gensch, D. H. (1970) · Journal of Marketing Research · doi:10.1177/002224377000700210 · Cited by 46 · see citing works
Pratkanis, A. R., & Greenwald, A. G. (1993) · Psychology and Marketing · doi:10.1002/mar.4220100406 · Cited by 44 · see citing works
Davtyan, D., Cunningham, I. M., & Tashchian, A. (2020) · European Journal of Marketing · doi:10.1108/ejm-08-2019-0670 · Cited by 35 · see citing works
Advertising Wearout: What and How You Measure Matters
Stewart, D. W. (1999) · Journal of Advertising Research · doi:10.1080/00218499.1999.12466454 · Cited by 42 · see citing works
Advertising Cost Interactions and the Optimality of Pulsing
Hahn, M., & Hyun, J.-S. (1991) · Management Science · doi:10.1287/mnsc.37.2.157 · Cited by 41 · see citing works
Enhancing Memory of Television Commercials through Message Spacing
Singh, S. N., Mishra, S. K., Bendapudi, N. M., & Linville, D. (1994) · Journal of Marketing Research · doi:10.2307/3152225 · Cited by 47 · see citing works
Effective Frequency: One Exposure or Three Factors?
Tellis, G. J. (1997) · Journal of Advertising Research · doi:10.1080/00218499.1997.12466688 · Cited by 37 · see citing works
Advertising effectiveness measurement : intermediate constructs and measures
Bergkvist, L. (2000) · Cited by 37 · see citing works
A neurocognitive model of advertisement content and brand name recall
Chessa, A. G., & Murre, J. M. J. (2007) · Marketing Science · doi:10.1287/mksc.1060.0212 · Cited by 35 · see citing works
Optimal Control of Sales Force Effort in Time
Tapiero, C. S., & Farley, J. U. (1975) · Management Science · doi:10.1287/mnsc.21.9.976 · Cited by 35 · see citing works
Effects of Scheduling on Retention of Advertising Messages
Heflin, D. T. A., & Haygood, R. C. (1985) · Journal of Advertising · doi:10.1080/00913367.1985.10672945 · Cited by 35 · see citing works
Print adverts: Not remembered but memorable
Hollins, T. J., & Askew, C. (1994) · Applied Cognitive Psychology · doi:10.1002/acp.2350080707 · Cited by 34 · see citing works
Memory for product names: The generation effect
Thompson, C. P., & Barnett, C. (1981) · Bulletin of the Psychonomic Society · doi:10.3758/bf03333615 · Cited by 33 · see citing works
Gázquez‐Abad, J. C., de Cannière, M. H., & Martínez-López, F. J. (2011) · Journal of Retailing · doi:10.1016/j.jretai.2011.03.001 · Cited by 33 · see citing works
Advertising spending patterns and competitor impact
Gijsenberg, M. J., & Nijs, V. R. (2018) · International Journal of Research in Marketing · doi:10.1016/j.ijresmar.2018.11.004 · Cited by 33 · see citing works
Baker, M. J., Brown, A. J., Brownlie, D. T., et al. (1983) · Marketing · doi:10.1007/978-1-349-06853-1_6 · Cited by 33 · see citing works
Realtime Response Measures Redefine Advertising Wearout
Hughes, G. (1992) · Journal of Advertising Research · doi:10.1080/00218499.1992.12466834 · Cited by 40 · see citing works
Estimating Marketing Policy Effects on Sales of a Frequently Purchased Product
Sexton, D. E. (1970) · Journal of Marketing Research · doi:10.1177/002224377000700309 · Cited by 30 · see citing works
Hou, Y., Tamoto, H., & Miyashita, H. (2024) · Extended Abstracts of the CHI Conference on Human Factors in Computing Systems · doi:10.1145/3613905.3650839 · Cited by 31 · see citing works
What do Zielske's Real Data Really Show about Pulsing?
Simon, J. L. (1979) · Journal of Marketing Research · doi:10.1177/002224377901600315 · Cited by 29 · see citing works
Johnston, W. J. (1981) · ACR North American Advances · Cited by 27 · see citing works
The Use of Field Experimental Observations in Estimating Advertising Recall
Strong, E. C. (1974) · Journal of Marketing Research · doi:10.1177/002224377401100402 · Cited by 27 · see citing works
“The predicted average awareness in the audience during the course of the year supports conclusions drawn by Zielske [13].”
MethodResultMerisavo, M. (2006) · Aaltodoc (Aalto University) · Cited by 27 · see citing works
More Weeks, Less Weight: The Shelf-Space Model of Advertising
Ephron, E. (1995) · Journal of Advertising Research · doi:10.1080/00218499.1995.12466468 · Cited by 26 · see citing works
Singh, S. N., Linville, D., & Sukhdial, A. S. (1995) · Journal of Advertising · doi:10.1080/00913367.1995.10673480 · Cited by 26 · see citing works
Dynamics and Competition in Charitable Giving
van Diepen, M. (2004) · EUR Research Repository (Erasmus University Rotterdam) · Cited by 26 · see citing works
Empirical Studies on Individual Response to Exposure Patterns
Lodish, L. M. (1971) · Journal of Marketing Research · doi:10.1177/002224377100800209 · Cited by 26 · see citing works
“In 1959, Zielske [7] tried to measure consumer recall and forgetting rate of advertising by mailing 13 different reprints of newspaper advertisements for an ingredient food to two groups of randomly selected women.”
BackgroundControlling Measurement Errors in Models of Advertising Competition
Naik, P. A., & Tsai, C. (2000) · Journal of Marketing Research · doi:10.1509/jmkr.37.1.113.18717 · Cited by 25 · see citing works
“…media spending patterns are like square waves of onand-off pulses (e.g., Mahajan and Muller 1986; Winer 1993), awareness patterns exhibit periodic rise and fall ( ) ˆ ˆ10 Θ ΩEIV = (M – ) M ,xx –1 xyλ νη (Zielske 1959), and advertising copy replacement induces sharp jumps (Pekelman and Sethi 1978).”
BackgroundInfluentialUnderstanding the Memory Effects in Pulsing Advertising
Aravindakshan, A., & Naik, P. A. (2015) · Operations Research · doi:10.1287/opre.2014.1339 · Cited by 25 · see citing works
“…of several factors such as retrieval cues (Keller 1987), verbal and pictorial content (Unnava and Burnkrant 1991), the length and serial position of ads (Pieters and Bijmolt 1997), postpurchase experience (Braun 1999), or spacing and repetition of ads (Janiszewski et al. 2003, Zielske 1959).”
Targeting online display ads: Choosing their frequency and spacing
Försch, S., & de Haan, E. (2018) · International Journal of Research in Marketing · doi:10.1016/j.ijresmar.2018.09.002 · Cited by 24 · see citing works
A Model for Relating Advertising Media Exposures to Purchase Incidence Behavior Patterns
Zufryden, F. S. (1987) · Management Science · doi:10.1287/mnsc.33.10.1253 · Cited by 24 · see citing works
Impact of web banner advertising frequency on attitude
Hussain, R., Ferdous, A., & Mort, G. S. (2018) · Asia Pacific Journal of Marketing and Logistics · doi:10.1108/apjml-04-2017-0063 · Cited by 17 · see citing works
Ray, M. L., & Sawyer, A. G. (1971) · Management Science · doi:10.1287/mnsc.18.4.p73 · Cited by 22 · see citing works
The economics of stock touting during Internet‐based pump and dump campaigns
Siering, M. (2018) · Information Systems Journal · doi:10.1111/isj.12216 · Cited by 21 · see citing works
“Exposure to these recommendations can have positive effects, ie, supporting the decision to buy the stock (Zielske, 1959).”
BackgroundConsistency and commonality in advertising content: Helping or Hurting?
Becker, M., & Gijsenberg, M. J. (2022) · International Journal of Research in Marketing · doi:10.1016/j.ijresmar.2022.05.004 · Cited by 21 · see citing works
Over, out, but present: recalling former sponsorships
Edeling, A., Hattula, S., & Bornemann, T. (2017) · European Journal of Marketing · doi:10.1108/ejm-05-2015-0263 · Cited by 21 · see citing works
Partially controlled demand and inventory control: An additive model
Balcer, Y. (1980) · Naval Research Logistics Quarterly · doi:10.1002/nav.3800270211 · Cited by 20 · see citing works
Ad Attributes and Attribution: Large-Scale Field Experiments Measure Online Customer AcquisitionPreprint
Reiley, D., Lewis, R. A., & Schreiner, T. (2012) · SSRN Electronic Journal · doi:10.2139/ssrn.2049457 · Cited by 20 · see citing works
Leas, E. C., Myers, M. G., Strong, D. R., et al. (2014) · American Journal of Public Health · doi:10.2105/ajph.2014.302249 · Cited by 18 · see citing works
The interaction between digital marketing communication and customer loyalty
Merisavo, M. (2008) · Aaltodoc (Aalto University) · Cited by 17 · see citing works
Forest Products Industry in a Digital Age: A Look at E-Commerce and Social Media
Montague, I., Gazal, K., Wiedenbeck, J. K., & Shepherd, J.-G. (2015) · Forest Products Journal · doi:10.13073/fpj-d-14-00104 · Cited by 17 · see citing works
On the superiority of pulsing under a concave advertising market potential function
Mesak, H. I., & Ellis, T. S. (2008) · European Journal of Operational Research · doi:10.1016/j.ejor.2008.01.023 · Cited by 16 · see citing works
The Innovation Function of Hybridization in Public Relations
Hoffjann, O. (2021) · Media and Communication · doi:10.17645/mac.v9i3.3994 · Cited by 15 · see citing works
Lariscy, R. W., & Tinkham, S. F. (1996) · Journal of Business Research · doi:10.1016/s0148-2963(96)00074-4 · Cited by 14 · see citing works
Optimal Bidding Strategy for Brand Advertising
Maehara, T., Narita, A., Baba, J., & Kawabata, T. (2018) · International Joint Conference on Artificial Intelligence · doi:10.24963/ijcai.2018/59 · Cited by 14 · see citing works
“Brand advertising is studied in the area of economics [De Mooij and Hofstede, 2010], marketing [Randall, 2000; Zielske, 1959], and psychology [Aaker and Biel, 2013].”
BackgroundThe Persuasive Impact of Message Spacing
Malaviya, P., & Sternthal, B. (1997) · Journal of Consumer Psychology · doi:10.1207/s15327663jcp0603_02 · Cited by 13 · see citing works
Quantitative Analyses of the Effectiveness of TV Commercials
Rohloff, A. C. (1966) · Journal of Marketing Research · doi:10.1177/002224376600300303 · Cited by 13 · see citing works
“used last Proportion of Test brand (1) X (2) test audience awareness”
MethodRelative Advertising Channel Effectiveness
Klein, G. D. (1981) · Current Issues and Research in Advertising · doi:10.1080/01633392.1981.10505310 · Cited by 12 · see citing works
FASTER: A Dynamic Fairness-assurance Strategy for Session-based Recommender Systems
Wu, Y., Cao, J., & Xu, G. (2023) · ACM Transactions on Information Systems · doi:10.1145/3586993 · Cited by 12 · see citing works
“It has been proven that user’s memory of an item declines over time [3, 31], and repeated appearance can deepen the user’s memory of an item [18, 42, 58].”
BackgroundAdvertising Frequency Requirements for Older Adults
Stephens, N., & Warrens, R. A. (1983) · Journal of Advertising Research · doi:10.1080/00218499.1983.12467993 · Cited by 12 · see citing works
Development of Standardized and Harmonized Advertising Regulation in the European Economic Community
Greer, T. V., & Thompson, P. R. (1985) · Journal of Advertising · doi:10.1080/00913367.1985.10672943 · Cited by 10 · see citing works
Grundlagen der Gestaltung der Kommunikationsleistung
Plötner, O. (1999) · Springer eBooks · doi:10.1007/978-3-642-58256-1_6 · Cited by 10 · see citing works
Crosier, K. (1995) · doi:10.1007/978-1-349-24260-3_13 · Cited by 10 · see citing works
The Perceived Effects of Piggyback Television Commercials
Martilla, J. A., & Thompson, D. L. (1966) · Journal of Marketing Research · doi:10.1177/002224376600300404 · Cited by 10 · see citing works
“In the same vein, Zielske's research findings on direct mail advertising support the seemingly reasonable assumption that "advertising will be quickly forgotten if the consumer is not continually exposed to it [12].”
BackgroundA maximin procedure for the optimal insertion timing of ad executions
Balakrishnan, P. V. S., & Hall, N. G. (1995) · European Journal of Operational Research · doi:10.1016/0377-2217(94)00043-c · Cited by 9 · see citing works
Howell, R. (2013) · Environmental Education Research · doi:10.1080/13504622.2013.836624 · Cited by 8 · see citing works
Cousins, L. S. (1980) · Accident Analysis & Prevention · doi:10.1016/0001-4575(80)90051-2 · Cited by 9 · see citing works
Modeling response to repetitive promotional stimuli
Fox, R., Reddy, S., & Rao, B. P. (1997) · Journal of the Academy of Marketing Science · doi:10.1177/0092070397253005 · Cited by 11 · see citing works
Entwicklung von Kommunikationsstrategien
Esch, F., & Winter, K. (2009) · Gabler eBooks · doi:10.1007/978-3-8349-8078-6_21 · Cited by 8 · see citing works
Advertising and Product Liability Litigation
Morgan, F. W., & Stoltman, J. J. (1997) · Journal of Advertising · doi:10.1080/00913367.1997.10673523 · Cited by 8 · see citing works
Dynamic and Competitive Effects of Direct MailingsPreprint
van Diepen, M., Donkers, B., & Franses, P. H. (2006) · RePEc: Research Papers in Economics · Cited by 8 · see citing works
The Shape of the Advertising Response Function
Simon, J. L., & Arndt, J. (1980) · Journal of Advertising Research · doi:10.1080/00218499.1980.12518779 · Cited by 7 · see citing works
The spacing effect in marketing: A review of extant findings and directions for future research
Noel, H., & Vallen, B. (2009) · Psychology and Marketing · doi:10.1002/mar.20307 · Cited by 6 · see citing works
- Authors
- Zielske, H. A.
- Affiliations
- Manager of the Research Department and Supervisor of Advertising Research of Foote, Cone & Belding, Chicago
- Corresponding author
- Zielske, Hubert A.
- Venue
- Journal of Marketing
- Publisher
- SAGE Publications
- Published
- 1959-01
- Volume
- 23
- Issue
- 3
- Pages
- 239-243
- ISSN
- 0022-2429 (ISSN-L)
- 1547-7185
- OpenAlex
- W2319938887
- Semantic Scholar
- 31f6716a7153d45b4346e942f737fb0e405f7901
- Cited by
- 207
- References
- 0
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 3 · 2023: 5 · 2022: 2 · 2021: 3 · 2020: 3 · 2019: 4 · 2018: 9 · 2017: 3 · 2016: 4 · 2015: 9 · 2014: 3 · 2013: 4 · 2012: 3
- FWCI
- 0.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Marketing (publishedVersion)
- Topics
- Social Sciences › Business, Management and Accounting › Marketing › Marketing and Advertising Strategies
- Social Sciences › Business, Management and Accounting › Marketing › Consumer Market Behavior and Pricing
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
- Keywords
- advertising scheduling, advertising frequency, advertising effectiveness
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