Don't be so emotional! How tone of voice and service type affect the relationship between message valence and consumer responses to WOM in social media

Reconciling the effects of positive and negative electronic word of mouth: roles of confirmation bias and involvement

Purpose

The study explored users' tendency of confirmation bias when processing congenial vs. uncongenial electronic-word-of-mouth (e-WOM) about mystery fictions, a hedonic product category with strong experience and hedonic characters.

Design/methodology/approach

A two-stage judgment approach was employed where the participants were asked to judge a set of mystery novels twice: one before, and another after they were exposed to positive and negative e-WOM. The first-stage judgment established two favored and two disfavored titles by each participant. They were then asked to read six consumer reviews – three positive and three negative – for each of the four titles. The procedures created four review evaluation situations: two congruent and two incongruent, which allowed the authors to assess the participants' perceptions of congenial and uncongenial reviews and their rating adjustments of the titles. Participants' involvement in mystery novels was also measured to test its moderating effect on confirmation bias.

Findings

Confirmation bias in the evaluation of e-WOM was observed and reinforced by the user's involvement in the genre. Congenial reviews were perceived to be significantly more credible, better reflect the intrinsic value of a title and less subjectively motivated than uncongenial reviews. Furthermore, after exposure to equal amount of positive and negative e-WOM, an asymmetrical adjustment of final rating of the titles was observed. A significantly greater downward adjustment was observed for disfavored than favored titles. Stronger positive confirmation bias was also observed in the evaluation of WOM.

Research limitations/implications

Previous studies on e-WOM have shown conflicting findings on the relative efficacy of positive vs. negative reviews. By introducing the factor of prior attitudes, the study demonstrated that whether WOM is consistent with an individual's prior attitude, rather than the valences of WOM in itself, determines its persuasiveness. Thus, it established the confirmation bias in users' processing of e-WOM. The finding highlights the importance for marketers to establish a positive initial impression, which, as the findings demonstrated, helps alleviate the damages caused by negative WOM.

Originality/value

This is the first study that has ever attempted to study the effect of confirmation bias during the users' processing of e-WOM in an experimental setting. By having the participants judge the books before and after exposure to congenial and uncongenial e-WOM, the authors were able to establish the link between the users' prior commitment to a book and their subsequent judgment of both the titles and the e-WOM.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/OIR-01-2020-0026

Which cues influence the perceived usefulness and credibility of an online review? A conjoint analysis

Purpose

This study aims to assess the relative importance of the argument strength, argument sidedness, writing quality, number of arguments, rated review usefulness, summary review rating and number of reviews in determining the perceived usefulness and credibility of an online review. Additionally, the authors use insights from the elaboration likelihood model (ELM) to explore the effect of consumers' product category involvement on the cues' relative importance.

Design/methodology/approach

A conjoint analysis (N = 287) is used to study the relative importance of the seven previously mentioned attributes. A balanced orthogonal design generated eight cards that correspond to individual reviews. Respondents scored all eight cards in a random order for perceived usefulness and credibility.

Findings

Overall, argument strength is the most important cue, while summary review rating and the number of reviews are the least important for perceived review usefulness and credibility. The number of arguments is more important for people who are more highly involved with the product, while writing quality and rated review usefulness are relatively more important for the low-involvement group.

Originality/value

This study provides a comprehensive test of how consumers perceive online reviews, as it the first to the authors’ knowledge to simultaneously investigate a large set of cues using conjoint analysis. This method allows for the implicit valuation (utility) of the individual cues, revealing the cues' relative importance, in a setting that comes close to a real-life context. Besides, insights of the ELM are used to understand how the relative importance of cues differs depending on the level of review readers' product category involvement.

The influence of subjective characteristics of social network sites on consumers' word-of-mouth sharing

Purpose

The purpose of this paper is to examine how subjective characteristics of social network sites (SNSs) affect consumers' positive and negative word-of-mouth (WOM) sharing.

Design/methodology/approach

The data used for this study were obtained from an online survey with a sample size of 369 consumers. Structural equation modeling was performed to test hypotheses and examine the research questions.

Findings

The authors found that the perceived anonymity of an SNS is negatively correlated with its perceived interpersonal closeness of friends, and the number of friends in an SNS is positively correlated with its perceived interpersonal closeness of friends. With regard to positive WOM, the perceived anonymity of the SNS has a significant negative influence on consumers' WOM, and both perceived interpersonal closeness and the number of friends have a significant positive influence on consumers' WOM. But, in the case of negative WOM, only perceived interpersonal closeness of friends has a significant positive influence on consumers' WOM.

Practical implications

When attempting to promote positive WOM, marketers should choose consumers who possess the “right” subjective characteristics of SNSs (i.e. low anonymity, high interpersonal closeness of friends and a large number of friends). At the same time, marketers should monitor the emergence of consumers' negative WOM, especially those consumers who have a high level of interpersonal closeness of friends in SNSs, and respond to the content of negative WOM without delay.

Originality/value

This study investigates the influence that subjective characteristics of SNSs have on consumers' WOM sharing and therefore contributes to the literature on the antecedents of WOM generation and also contributes to the research that compares positive WOM with its negative counterpart.

What about “U”? The influence of positive online consumer reviews on the individual's perception of consumption benefits

Purpose

This study examines the influence that the positive valence intensity of online consumer reviews (OCRs) has on the benefits that individuals perceive they have derived from consumption. A distinction is made based on whether the performance obtained during the consumption was high or low, that is, whether the product/service met the objectives set by the consumer.

Design/methodology/approach

The study is a between-subjects experiment with two manipulations: the positive valence intensity of OCRs (highly positive vs neutral-indifferent) and the performance obtained by the consumer (high vs low). The manipulations were measured on 11-point Likert-type scales, the lowest perception being scored at 0 (strongly disagree) and the highest at 10 (strongly agree). A total of 249 useable questionnaires were returned.

Findings

The results demonstrated that the influence of positive OCRs on the consumer's perception of consumption benefits follows concave curvilinear functional forms for low performance (inverted U-shaped) and convex for high performance (U-shaped). Thus, highly positive OCRs not corroborated by performance lead to negative perceptions, whereas neutral-indifferent OCRs verified by performance create positive perceptions.

Originality/value

This study goes beyond the immediate influence of positive OCRs on purchases and argues that their influence remains important for the individual's final perception of the consumption benefits that she/he, in the event, received. In addition, the results of the present study show that OCRs are important reference points from which individuals make social judgments and comparisons during consumption. Finally, this study provides theoretical and empirical support to explain the U-shaped functional forms associated with the influence of OCRs.

The impacts of evaluation duration and product types on review extremity

Purpose

Extreme online reviews can have great impacts on consumers’ purchase decisions. The purpose of this paper is to investigate when users are more likely to provide extreme ratings. The study draws inference from attitude certainty theory and proposes that review extremity is influenced by the interaction of evaluation duration and product/service types: for hedonic products/services, shorter evaluation duration can foster attitude certainty, leading to higher review extremity; in contrast, for utilitarian products/services, longer evaluation duration can increase attitude certainty, resulting in more extreme reviews.

Design/methodology/approach

Three studies were conducted to test the hypotheses: Study 1 is an empirical analysis of 3,000 reviews from an online retailing website; Studies 2 and 3 are two between-subject experiments.

Findings

Results from three studies confirm the hypotheses. Study 1 provides preliminary evidence on how review extremity varies in evaluations of different durations and product/service types. Results from Studies 2 and 3 show that for hedonic products/services, the shorter the evaluation duration, the more likely users are to give extreme ratings; however, for utilitarian products/service, the longer the evaluation duration, the more likely users are to give extreme reviews; and attitude certainty plays a mediating role between evaluation duration and review extremity.

Originality/value

Findings from this study provide understandings on when a fast rather than a slow evaluation can lead to more extreme reviews. The results also highlight the role of users’ attitude certainty in the underlying mechanism.