Kosuke Motoki
Sayo Iseki- 1Department of Management, The University of Tokyo, Tokyo, Japan
- 2Department of Food Science and Business, Miyagi University, Sendai, Japan
- 3Department of Management, Chukyo University, Nagoya, Japan
We attempted to evaluate the replicability and generalizability of ten influential research on sensory marketing by conducting a high-powered and pre-registered replication in online settings in non-WEIRD consumers. The results revealed that only 20% of findings could be successfully replicated, and their effect sizes are as half as the original ones. Two successful studies had relatively larger sample sizes, used sound symbolism, and employed within-participants manipulation of senses. No studies involving visual factors, between-participant manipulation of senses, or interactions between factors could be replicated. Our findings reveal an initial estimate of the replicability and generalizability of sensory marketing.
Introduction
Over the past decade, sensory marketing has become a growing field of research. Sensory marketing is “marketing that engages consumers' senses and affects their perception, judgment, and behavior” (Krishna, 2012, p. 332). An influential review, “An integrative review of sensory marketing: Engaging the senses to affect perception, judgment, and behavior” (Krishna, 2012) has been cited more than 1300 times (Google Scholar, 11/2021). Many studies have demonstrated that sensory factors affect consumers' perceptions, judgments, and behaviors (Krishna and Schwarz, 2014; Krishna et al., 2016; Wörfel et al., 2022). A growing body of research has demonstrated that vision (Biswas et al., 2017), audition (Motoki et al., 2022), olfaction (Madzharov et al., 2015; Iseki et al., 2021), touch (Zwebner et al., 2014), and tastes (Litt and Shiv, 2012) influence consumer behaviors. Several reviews on sensory marketing also have appeared including multisensory store atmospherics (Spence et al., 2014), grounded cognition (Krishna and Schwarz, 2014), package design (Krishna et al., 2017), advertising (Krishna et al., 2016), and new technologies (Petit et al., 2019). However, to our knowledge, the replicability of sensory marketing findings has not yet been addressed.
Psychology and behavioral sciences face a replication crisis. Replication can be regarded as the cornerstone for establishing scientific findings in psychology, marketing, and consumer research (Asendorpf et al., 2013; Lynch et al., 2015; Ding et al., 2020; Edlund et al., 2022). Most research on psychology and behavioral science (including consumer psychology) relies on testing statistical hypotheses using empirical observations and data (Shrout and Rodgers, 2018). Statistically significant findings can be replicated using an independent dataset (Shrout and Rodgers, 2018). However, since the 2010s, it has been found that many of the findings published in top-tier journals cannot be replicated (Open Science Collaboration, 2015; Camerer et al., 2018). For example, one of the first large replication attempts has found that only 36% of one hundred psychology findings can be replicated (Open Science Collaboration, 2015). Non-successful replications of classic and famous findings in the field of social psychology (morality salience and ego depletion) have also been reported (Vadillo et al., 2018; Klein et al., 2019), though consumer research has relied on classical findings (Ferraro et al., 2005; Baumeister et al., 2008; Fransen et al., 2008). The findings that fail replication include research in the fields of cognitive and social psychology (Open Science Collaboration, 2015; Klein et al., 2019). Further, given that consumer psychology has strived by applying the theory/findings of social and cognitive psychology (Hoyer et al., 2012; Malter et al., 2020), evaluation of the replicability of consumer research should be required.
Consumer psychology is no exception to replication crises. Data Colada (https://datacolada.org/) attempted to replicate ten studies published in the Journal of Marketing Research and the Journal of Consumer Research. The replication attempts by Data Colada revealed that most findings could not be replicated. Even when the results showed the same direction, the effect size1 was much smaller than that of the original authors (https://datacolada.org/92). This suggests that the effect size of the original findings would be inflated, and it is important to re-evaluate the effect size by a high-powered replication study. Moreover, other researchers have failed to replicate the findings of consumer psychology (Tunca and Yanar, 2020; Tunca et al., 2022), even though some can be replicated (Sarstedt et al., 2017). For example, neither two findings that appeared in the Journal of Consumer Research (Dubois et al., 2011; Wang and Griskevicius, 2013) were unsuccessfully replicated (Tunca and Yanar, 2020; Tunca et al., 2022). Moreover, it has been estimated that most of the process evidence in marketing obtained by mediation analyses is noisy and inadequately powered (Charlton et al., 2021). Conclusively, one researcher has estimated that the replication rate of marketing and consumer research is ~10% (https://www.openmktg.org/research/replications).
The present study used pre-registered replication to evaluate the replicability of ten influential research on sensory marketing. Replications of marketing research have been reported, especially in the Replication Corner of the International Journal of Research in Marketing (Lynch et al., 2015). Most replication research published in the Replication Corner is successful (i.e., original findings are successfully replicated) (Lynch et al., 2015). Additionally, only three studies can be regarded as unsuccessful (i.e., the replication score was below the midpoint) (Lynch et al., 2015). In other words, 90% (27/30) of replication studies can be regarded as successful (i.e., replication score was above midpoint) (Lynch et al., 2015). The ratio of successful replication appears to contradict that of pre-registered replication (https://www.openmktg.org/research/replications). It is possible that publication bias (i.e., only successful replications were submitted and then published) and/or selective reporting inflated the ratio of successful replications in the Replication Corner (Lynch et al., 2015). Further, it has been suggested that pre-registration2 helps create credible and robust science (van't Veer and Giner-Sorolla, 2016; Nosek et al., 2018). Actually, pre-registration has been also recently regarded as an essential research practice in consumer psychology (Simmons et al., 2021). Therefore, to obtain findings that are more reliable, we employed a pre-registered replication.
It should be noted that our replication attempts were conceptual replication with an extension of populations and settings (LeBel et al., 2018). Most of the facets in the experimental design (e.g., effect, hypotheses, IV/DV construct, IV/DV operationalization, and IV/DV stimuli) (LeBel et al., 2018) are the same as (or very close to) the original research. The populations, physical settings, and contextual variables were different from those in the original research. Most of the original research recruited WEIRD (Western, Educated, Industrialized, Rich, and Democratic) samples (Western university students in most cases) in a laboratory setting. By contrast, our replication research recruited non-WEIRD consumers on an online platform. It has been suggested that participants of most research are from WEIRD samples (96% of top-psychology journals), but WEIRD people constitute only 12% of the population (Henrich et al., 2010). Moreover, consumer research has moved traditional settings/participants (i.e., university students in a lab setting) to the general population from crowdsourcing platforms (Goodman and Paolacci, 2017). Together, our attempts at conceptual replication test whether previous findings in sensory marketing can be generalized to non-WEIRD consumers using an online platform.
The present study aimed to replicate ten influential pieces of research on sensory marketing, relying on the recent attempts of empirical audits and reviews (O'Donnell et al., 2021). The empirical audit and review can be referred to as an approach to assessing the evidentiary value of a research area (O'Donnell et al., 2021). Based on the concepts of empirical audit and review, we replicated ten influential studies on sensory marketing (see Table 1). These studies include sound symbolism in brand names (Klink, 2000; Yorkston and Menon, 2004; Lowrey and Shrum, 2007), product color (Hagtvedt and Brasel, 2017), logo design (Cian et al., 2014; Jiang et al., 2015), and visual product depictions (Madzharov and Block, 2010; Elder and Krishna, 2011; Chae and Hoegg, 2013; Romero and Biswas, 2016).
Table 1. Summary of previous findings that the current research attempts to replicate.
Methods
Ten studies were selected for the replication project. Our replication attempts were based on an empirical audit and review (O'Donnell et al., 2021), which is an approach to assessing the evidentiary value of a research area (O'Donnell et al., 2021). According to O'Donnell et al. (2021), the following steps involve empirical audits and reviews: (1) identifying the bounds of a topic area; (2) selecting studies that belong to a topic area; and (3) replicating the studies. Based on the concepts of empirical audit and review, we replicated ten influential studies on sensory marketing (see Table 1).
Our selection criteria include (1) sensory marketing research, (2) having more than 100 citations, (3) sufficient materials, and/or procedures publicly available, and (4) could be replicated with an online platform. Criterion (1) indicates that studies need to manipulate sensory stimuli in consumer contexts. We did not set any operational definition of sensory stimuli similar to a previous empirical audit and review (O'Donnell et al., 2021), and accepted all manipulations of sensory stimuli written by the original authors. Criterion (2) was added to refer to “influential” research. One factor related to influential research is the number of citations. We set more than 100 citations as our operational requirements. Criterion (3) is needed because we attempted to replicate the research as directly as possible. Criterion (4) was included since we could not recruit a large number of participants during the COVID-19 pandemic and decided to use an online platform for the current project. Two authors evaluated each of the criteria.
We selected one study investigating simple effects (i.e., simple effects of sensory stimuli without mediation and/or moderation) in consumer contexts when the research contained multiple qualifying studies. It should be noted that we did not attempt to replicate all influential research on sensory marketing. It has been suggested that empirical audits and reviews do not always include all relevant research (O'Donnell et al., 2021) possibly because of the limitations of time, money, and human resources.
We opened up the data collection to recruit 1000 Japanese participants. The sample size was determined to be at least 2.5 times the sample size of any original paper (Simonsohn, 2015; O'Donnell et al., 2021). The high-power, large sample size allowed us to detect small effects and reduce type 1 errors. Following the pre-registered exclusion criteria, we excluded 247 participants who failed an instructional manipulation check (IMC; Oppenheimer et al., 2009; Miura and Kobayashi, 2016) and an attention check question (ACQ; e.g., Oppenheimer et al., 2009; Aust et al., 2013). Detailed information about the data exclusion criteria can be found in the Appendix. Finally, the data of 823 participants (mean age = 40.77, SD of age = 10.48, 428 males, 391 females, 4 did not prefer to say) were analyzed. The participants were recruited from Crowdworks and completed an online survey created on Qualtrics. The study was pre-registered (https://aspredicted.org/ZW2_C76). All participants gave their informed consent before the survey, and the study was conducted following the ethical guidelines of the Declaration of Helsinki.
The participants performed all the studies in randomized order. Within each study, participants were randomly allocated to one condition (e.g., one of the two conditions for Romero and Biswas, 2016). Participants completed all the studies within about 10 minutes (M = 609 s). This procedure was similar with previous replication attempts involving many studies (e.g., participants completing 13 or 15 studies; see Forsell et al., 2019). Methods, analyses, and sample sizes were performed before data collection. The details of the methods, procedures, and analyses of each study are presented in the Supplementary material (Methodological Detail Appendix). All surveys were conducted in Japanese. The materials were translated by two authors (K.M. and S.I.).
Results
Klink (2000), marketing letters
We conducted binominal tests as described by Klink (2000). The data were also analyzed using chi-squared tests, although not pre-registered. The analyses were reported based on chi-squared tests because the statistical value (χ2) can be converted into an effect size (r), commonly used in our replication research. A summary of these findings is presented in Table 2. We successfully replicated previous findings except for H1i and H1k (i.e., more masculine and stronger).
Table 2. Summary of findings that the current research replicated Klink (2000).
Shrum et al. (2012), IJMR
We conducted a 2 (vowel: front, back) × 2 (product category: convertible/knife, 4 × 4 SUV/hammer) mixed model analysis of variance (ANOVA), with a vowel as a within-participants factor and product category as between-participant factors. The results of the analysis revealed a main effect of vowel (F1,821 = 252.615, p < 0.001, η2p = 0.235) and product category (F1,821 = 18.478, p < 0.001, η2p = 0.022). As predicted, a significant interaction was found (F1,821 = 55.002, p < 0.001, η2p = 0.063). Front vowel sounds were preferred over back vowel sounds for convertible and knife (52.56–47.45%; F1,821 = 4.717, p = 0.030, η2p = 0.011). In contrast, back vowel sounds were preferred over front vowel sounds for 4 × 4 vehicle and hammer (59.59–40.41%; F1,821 = 70.981, p < 0.001, η2p = 0.149). Thus, we successfully replicated the previous findings (Table 3).
Table 3. Summary of findings that the current research replicated Shrum et al. (2012).
Hagtvedt and Brasel (2017), journal of consumer research
ANOVA was conducted to investigate the effects of saturation (high and low) on the size estimate of the product. The results of the analysis did not reveal any effects of saturation (high saturation: M = 15.46, SD = 1.94, vs. low saturation: M = 15.42, SD = 1.84; F1,821 = 0.095, p = 0.758, η2p = 0.000). ANOVAs were conducted to investigate the effects of saturation (high and low) on attention and arousal. The results of the analysis revealed that high (vs. low) saturation increased attention (high saturation: M = 5.30, SD = 1.07; vs. low saturation: M = 4.75, SD = 1.14; F1,821 = 49.238, p < 001, η2p = 0.057) and arousal (high saturation: M = 5.83, SD = 1.10; vs. low saturation: M = 5.41, SD = 1.20; F1,821 = 27.539, p < 0.001, η2p = 0.033). Given that our main result (i.e., saturation and size estimates) was not significant, we did not perform pre-registered mediation analyses.
Romero and Biswas (2016), journal of consumer research
A chi-squared test was performed to investigate whether the frequencies of choosing healthy food differ in the positions where the foods are located on the left vs. the right side of unhealthy foods. The results of the analysis showed that the frequency of choosing healthy food did not differ regardless of whether it was on the left (24.44%) or the right (25.59%) of the unhealthy food (χ2 = 0.091, p = 0.763).
Yorkston and Menon (2004), journal of consumer research
An ANOVA was performed to test the effects of sound symbolism of brand name (Frish, Frosh), diagnosticity of brand name (test, true), and timing (simultaneous, after) on the attribute perception index. The results of the analysis revealed the main effect of sound symbolism of brand name (F1,821 = 7.492, p = 0.006, η2p = 0.009) such that frosh (vs. frish) had higher ratings in the attribute perception index. However, the results of the analysis did not show a three-way interaction (F1,821 = 1.053, p = 0.305, η2p = 0.001) or an interaction between sound symbolism and diagnosticity (F1,821 = 0.118, p = 0.731, η2p = 0.000).
An ANOVA was also conducted to investigate the effects of sound symbolism of brand name (Frish, Frosh), diagnosticity of brand name (test, true), and timing (simultaneous, after) on the brand attribute index. The results of the analysis did not reveal the main effect of sound symbolism of brand name (F1,821 = 0.114, p = 0.736, η2p = 0.000), the three-way interaction (F1,821 = 1.400, p = 0.237, η2p = 0.002), or the interaction between sound symbolism and diagnosticity (F1,821 = 1.174, p = 0.279, η2p = 0.001).
Elder and Krishna (2011), journal of consumer research
ANOVA was conducted to investigate the effects of product orientation on a participant's dominant hand (match or mismatch) on purchase intentions. The results of the analysis did not reveal any effects on purchase intentions (match: M = 3.39, SD = 1.75; mismatch: M = 3.36, SD = 1.82; F1,821 = 0.068, p = 0.794, η2p = 0.0001). ANOVA was also conducted to investigate the effects of orientation (match and mismatch) on mental simulations. The results of the analysis did not reveal any effects on mental simulations (match: M = 4.87, SD = 2.00 vs. mismatch: M = 4.86, SD = 2.03; F1,821 = 0.006, p = 0.941, η2p = 0.0000). Given that our main result was not significant, we did not perform pre-registered mediation analyses.
Jiang et al. (2015), journal of consumer research
An ANOVA was conducted to investigate the log-shape-by-product attribute interactions. The results of the analysis did not reveal logo shape-by-cut attribute interactions (F2,820 = 0.141, p = 0.868, η2p = 0.000). For completeness, we analyzed the effects of circular vs. angular-logo on comfort (circular-logo: M = 5.33, SD = 1.35, vs. angular-logo: M = 5.34, SD = 1.30; F1,550 = 0.004, p = 0.949, η2p = 0.000) and durability judgment (angular-logo: M = 5.37, SD = 1.31 vs. circular-logo: M = 5.37, SD = 1.32; F1,550 = 0.0001, p = 0.994, η2p = 0.000). The analyses did not reveal the effects of logo shape on comfort and durability judgments.
Additionally, Jiang et al. (2015) confirmed that logo shape does not affect attitudes. Therefore, an ANOVA was conducted to investigate the effect of angular and circular-logo shapes on attitude. The results showed that there were no differences in attitudes between logo shapes (circular-logo: M = 5.08, SD = 1.23, vs. angular-logo: M = 5.13, SD = 1.20, vs. control: M = 5.18, SD = 1.21; F2,820 = 0.478, p = 0.620, η2p = 0.001).
Chae and Hoegg (2013), journal of consumer research
In this replication, 85 participants were unable to identify the shopping goal in the manipulation check and were excluded, leaving 738 participants in the analysis. An ANOVA was conducted to investigate the effects of desirable attributes (antique, modern, and control) and position (left and right) on product attitudes. The results of the analysis revealed the main effect of the desirable attribute (F2,732 = 7.952, p < 0.001, η2p = 0.021) but not the main effect of position (F1,732 = 1.093, p = 0.296, η2p = 0.002). A significant interaction was found (F2,732 = 2.758, p = 0.064, η2p = 0.008). However, post hoc analyses did not reveal any hypothetical findings. Antique priming did not influence product attitudes depending on position (left: M = 5.95, SD = 1.47 vs. right: M = 5.98, SD = 1.53; F1,732 = 0.032, p = 0.859, η2p = 0.000). Modern priming did not influence product attitudes depending on position (right: M = 5.47, SD = 1.41 vs. left: M = 5.63, SD = 1.68; F1,732 = 0.695, p = 0.405, η2p = 0.001). Given that our main result was not significant, we did not perform pre-registered mediation analyses.
Cian et al. (2014), journal of marketing research
An ANOVA was conducted to investigate the effect of logo dynamism (high and low) on brand attitudes. The results of the analysis did not reveal an effect on brand attitudes (high dynamism: M = 5.64, SD = 1.05; vs. low dynamism: M = 5.59, SD = 1.15; F1,821 = 0.393, p = 0.531, η2p = 0.001). An ANOVA was also conducted to investigate the effect of logo dynamism (high and low) on perceived movement as a manipulation check. The results of the analysis revealed an effect on perceived movement (high dynamism: M = 5.85, SD = 1.27, vs. low dynamism: M = 5.00, SD = 1.50; F1,821 = 77.863, p < 0.001, η2p = 0.087).
Madzharov and Block (2010), journal of consumer psychology
ANOVA was conducted to investigate the effect of product units displayed on the package (f our and seven) on perceived product quantity. The results of the analysis did not reveal any effect on perceived product quantity (f our: M = 21.40, SD = 100.28; seven: M = 17. 71, SD = 9.14; F1,821 = 0.565, p = 0.452, η2p = 0.001). Since there was an outlier in the response for perceived product quantity (i.e., a response = 2020), the Mann-Whitney U test (nonparametric test) was not pre-registered. The results of the analysis did not reveal any effect on the perceived product quantity (U = 78,727, Z = 1.743, p = 0.081, r = 0.061).
ANOVA was also conducted to investigate the effect of product units displayed on the package (f our, seven) on the serving size. The results of the analysis did not reveal an effect on serving size (f our: M = 4.45, SD = 3.00, vs. seven: M = 4.80, SD = 3.52; F1,821 = 2.380, p = 0.123, η2p = 0.003).
Summary of findings
A summary of our replication findings is shown in Tables 4, 5. The results reveal that only 20% (2/10) of the findings could be successfully replicated in terms of statistical significance (p < 0.05; 95% CI not including zero in the hypothesized direction). In other words, replication of eight studies (80%, 8/10) did not reach statistical significance. Moreover, the replication effect sizes were smaller than the original effect sizes in all ten studies. The replication effect sizes of the two successfully replicated findings were half of the original ones. We also provided estimated power and the upper bounds of 95% for the estimated power of the original studies. Most of the original studies (i.e., their main DVs of 8/10 unsuccessful replications) included <20% power in their 95% CIs. This suggests that most of the original findings that we attempted to replicate appear to have much smaller effects that thousands of sample sizes are needed for detection.
Table 4. Main findings of selected 10 studies.
Table 5. Detailed findings of selected 10 studies.
We employ empirical audits and reviews (O'Donnell et al., 2021), which can be used to reach aggregate conclusions to evaluate research designs (e.g., manipulations and measures) that empirically strengthen (or weaken) evidence. Two successful studies had relatively larger sample sizes, used sound symbolism, and employed within-participants manipulation of senses. No studies involving visual factors, between-participant manipulation of senses, or interactions between factors could be replicated. This suggests that specific research designs (e.g., the type of senses, manipulation of senses, and number of sample sizes) influence the credibility of the findings.
Discussion
Our research examined the replicability of ten influential studies on sensory marketing. Sensory marketing has attracted the attention of researchers and practitioners over the last decade (Krishna, 2011, 2012). An influential article on sensory marketing (Krishna, 2011) was cited more than 1400 times in Google Scholar (February 2022). However, to our knowledge, no research has attempted to replicate these findings from the perspective of empirical audit and review (O'Donnell et al., 2021). In general, our findings demonstrated that 20% (2/10) of the influential research on sensory marketing was successfully replicated. Our findings suggest that not all influential research can be replicated, and indicate the importance of replication research to examine the reliability of prior findings in consumer psychology and marketing.
Contribution to replication attempts in consumer psychology
Our findings contribute to replication attempts in consumer psychology. The sciences are facing a replication crisis. Since it has been revealed that famous psychological findings are less replicable (Open Science Collaboration, 2015), several attempts have been made in psychology (Klein et al., 2018), economics (Camerer et al., 2016), and behavioral sciences (Camerer et al., 2018). However, replication attempts in consumer psychology have been relatively rare [see O'Donnell et al., 2021 and Data Colada (http://datacolada.org/) for a few exemptions]. Our study is one of the first attempts to replicate research on consumer psychology, especially from the standpoint of empirical audits and reviews (O'Donnell et al., 2021). The replication findings revealed that 20% could be replicated in terms of pre-registered analyses (p < 0.05). Together, our results demonstrate the replicability of the scientific findings in consumer psychology.
Which findings can or cannot be replicated?
Our results reveal the sensory marketing findings that can or cannot be replicated. First, sensory marketing research that capitalizes on sound symbolism is replicable. Our replication attempts successfully replicated two findings (Klink, 2000; Shrum et al., 2012) and partially replicated one of them (Yorkston and Menon, 2004). This is consistent with the argument that sound symbolism is robust and found in diverse cultures (Cwiek et al., 2022). Among sensory marketing research, the reliability of the findings might differ depending on the type of sensory stimuli. Findings based on sounds, especially sound symbolism, appear to be more reliable than those based on other sensory stimuli.
Second, replicable findings tend to manipulate sensory stimuli within-participants. Two of the replicable findings adopt the within-participants manipulation of sensory stimuli (Klink, 2000; Shrum et al., 2012); though not all research on within-participants manipulation can be replicated (Romero and Biswas, 2016). Two sensory stimuli (e.g., hypothetical brand names, including front vowels and back vowels) are evaluated side by side simultaneously (i.e., joint rather than separate evaluation) (Hsee, 1996). Recent research has suggested that the effects of sensory stimuli (i.e., verticality and horizontality of photos) on judgment appear to be more reliably obtained in within-participants than between-participant designs (Zhang et al., 2022). Some findings that were not successfully replicated in our research employed between-participant manipulations of sensory stimuli (Elder and Krishna, 2011; Hagtvedt and Brasel, 2017). Together, our replication attempts suggest that within-participants manipulation creates more reliable and replicable findings.
Third, previous findings obtained from larger samples and effect sizes are more replicable. We successfully replicated two findings that had relatively larger samples and effect sizes (Klink, 2000; Shrum et al., 2012). Their sample sizes (Klink, 2000; Shrum et al., 2012) are the top two largest among the ten research targets. The effect size of Klink (2000) is the largest, and that of Shrum et al. (2012) is the third largest among the ten sensory marketing studies. Klink (2000) had n = 265 and r = 0.46 (mean r of Study 1 H1a-m). Shrum et al. (2012) had n = 357 (combined analysis of Experiment 1a-c) and r = 0.39. This appears to be consistent with the evidence that the sample size and effect size in the original study were associated with the success of the replications (Soto, 2019); however, see Altmejd et al. (2019).
Our findings contribute to the research on sensory marketing in digital environments. Consumers tend to spend a lot of time shopping in digital environments (e.g., e-commerce). This tendency is present in WEIRD and non-WEIRD consumers. Although some studies have attempted to investigate the role of sensory stimuli in consumer behavior in an online setting (e.g., Rodríguez et al., 2021), less is known about how previous influential findings on sensory marketing, mostly obtained from WEIRD consumers in an offline setting, can be generalized to non-WEIRD consumers in an online setting. To fill this gap, we attempted to replicate ten influential studies on sensory marketing in digital environments by recruiting non-WEIRD consumers. The results revealed that only 20% of the findings of the influential studies can be replicated by non-WEIRD consumers in an online setting. Given that our replication research does not cover all aspects of sensory marketing in digital and/or virtual environments, more such research is needed. For example, it would be intriguing to test in future research the replicability and generalizability of findings involving new sensory-enabling technologies (Petit et al., 2019).
Limitation of the current study
Our study had the following limitations. First, the differences in participants' nationality/cultures between the present and the original research might influence our findings. Our participants were non-WEIRD consumers (i.e., Japanese consumers), while the participants in the original research were WEIRD consumers. It should be noted that we did not aim for the exact or direct replications (LeBel et al., 2018). Rather, we conducted conceptual replications by recruiting non-WEIRD consumers to test the generalizability of previous findings on sensory marketing. Our results cast doubt on the generalizability of previous findings on sensory marketing. Further research should conduct the direct replications to recruit the same characteristic of the participant with the original studies. Second, our study did not attempt to replicate influential research on sensory marketing that addressed olfaction, taste, and haptics. Namely, the senses manipulated as independent variables were limited to auditory and visual senses, although replication of Klink (2000) addressed all senses except the independent variable. It is important to conduct additional studies that consider various sense factors. Moreover, participants went through ten studies sequentially at the same time. The fatigues, the order effects, and/or attentiveness possibly influence our findings. However, it should be noted that the required time (and the number of studies) was shorted than that of previous attempts of replications projects. Our participants completed the ten studies within about 10 minutes (M = 609 s), while participants in a previous replication project completed 13 or 15 studies for about 30 min (see Klein et al., 2018). Our attention check was also conducted after performing all the studies, which possibly suggesting that participants could attend to the tasks. Given this, our procedures apparently not induced excessive fatigues and not lead to the problem of attentiveness. The order of ten studies were also randomized and could cancel out any order effects. Nevertheless, further research should treat with issues. Finally, our results might be influenced by differences in the materials and instructions. We used the same visual stimuli as the original ones. In the case of auditory stimuli (i.e., sounds in brand names), the manipulation of the auditory stimuli was the same as that of the original ones. However, the presentation of the stimuli differed between the original study and our study. Klink (2000) presented brand-name stimuli in a 2-page booklet. Yorkston and Menon (2004) had participants read a press release containing brand-name stimuli. We cannot confirm whether our replication study exactly followed the instructions and materials in the original research because detailed instructions and materials were missing in many cases. Further research is required to clarify this issue.
Conclusion
We evaluated the replicability of ten influential research on sensory marketing by conducting a high-powered and pre-registered replication. The results demonstrated that only 20% (2/10) of study findings could be successfully replicated, and their effect sizes are half of the original ones. Successfully replicated findings are characterized by relatively larger sample sizes, use of sound symbolism, and within-participants manipulation of the senses. Our findings reveal an initial estimate of the replicability of sensory marketing and provide implications for how to build a cumulative science in consumer psychology.
Data availability statement
The original contributions presented in the study are included in the article/Supplementary material, further inquiries can be directed to the corresponding author/s. Data, materials, and analysis code are available at https://osf.io/tnmvq/.
Ethics statement
Ethical approval was not provided for this study on human participants because online experiments and participants' responses are anonymous. The patients/participants provided their written informed consent to participate in this study.
Author contributions
Conceptualization, data curation, formal analysis, investigation, methodology, project administration, resources, software, validation, visualization, and writing—review and editing: KM and SI. Roles/writing—original draft: KM. Both authors contributed to the article and approved the submitted version.
Conflict of interest
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
Publisher's note
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.
Supplementary material
The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fcomm.2022.1048896/full#supplementary-material
Footnotes
1. ^The effect size is the magnitude of the relationship between the independent and dependent variables.
2. ^Pre-registration refers to the process of registering the contents of a study to be conducted with a third-party organization (e.g., https://osf.io/, https://aspredicted.org/). The contents to be pre-registered include hypotheses, sample size, independent variables, dependent variables, analysis methods, and data exclusion criteria. Researchers must conduct the study based on these pre-registered contents. In principle, deviations from the pre-registered content are not permitted. Hence, pre-registration can prevent questionable research practices (QRPs) such as p-hacking, HARKing, and cherry picking.
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Keywords: sensory marketing, consumer psychology, replication, pre-registration, consumer behavior
Citation: Motoki K and Iseki S (2022) Evaluating replicability of ten influential research on sensory marketing. Front. Commun. 7:1048896. doi: 10.3389/fcomm.2022.1048896
Received: 20 September 2022; Accepted: 30 September 2022;
Published: 28 October 2022.
Edited by:
Felipe Reinoso-Carvalho, University of Los Andes, ColombiaReviewed by:
Catalina Estrada-Mejia, Universidad de Los Andes, ColombiaEnrique Ter Horst, University of Los Andes, Colombia
Copyright © 2022 Motoki and Iseki. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: Kosuke Motoki, motoki@e.u-tokyo.ac.jp