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Downward line extension is a valuable growth strategy that enables multiple products and services to meet diverse customer needs. However, downward extended products launched by high-status brands may be challenged by horizontal extended products launched by relatively low-status brands when these two types of products target similar consumers. This study aims to examine the impact of product type (horizontal extended versus downward extended) on consumers’ purchase intentions, the underlying mechanism and the moderating role of power distance belief.

Four scenario-based experiments were conducted to probe the research questions.

Consumers develop lower purchase intentions for downward (versus horizontal) extended products due to the reduction of perceived fit and self-congruity (Study 1). Beyond that, power distance belief moderates the impact of product type on consumers’ purchase intentions, as a low power distance belief reduces the negative effect of downward line extension (Studies 2a, 2b and 2c). Perceived fit and self-congruity mediate the interaction effect between product type and power distance belief on consumers’ purchase intentions (Study 2c).

This study provides marketing practitioners with guidance on implementing the strategy of downward line extension.

This study serves as a preliminary effort to compare consumers’ responses between downward and horizontal extended products, which deepens the understanding of downward line extension. It also contributes to the body of knowledge about line extension and power distance belief by demonstrating the moderating role of power distance belief in a line extension context.

Among the range of strategies available to a company, line extensions are an important way to keep a brand alive and to realize incremental financial growth. In order to be successful at introducing new extensions managers should understand line extensions’ key success factors. In this study three market‐related factors’ impact on line extension success were investigated, i.e. the level of competition in the market place; retailer power; and consumers’ variety seeking behavior. Data collected from 49 marketing and product managers in the fast‐moving consumer goods industry showed that line extensions have very little added value over existing products, and that cannibalization is very much related to a line extension’s success. Of all line extensions, those involving new flavors and new packaging/sizes were most successful. Extensions that improved product quality were found to be unsuccessful. The market‐variables: level of competition; retailer power; and variety seeking behavior all had a negative influence on line extension success. Dominant brands were hurt more by variety seeking behavior’s negative impact than less dominant brands.

The objective of the paper is to provide an understanding of how large organisations develop line extensions of their brands and to present guidelines for management when considering an upscale line extension.

A qualitative research technique was used in this study. It involved case study research in the beverage industry, where 11 senior marketers were interviewed in depth.

A line extension into premium categories was seen to be an effective strategy to revitalise a brand. Respondents also stated that the line extension needs to be very closely linked to the core brand. Being an early entrant but not first‐to‐market or late‐to‐market was also important.

Guidelines to management are provided and a framework is developed for using upscale line extensions in brand revitalization strategies. Marketing managers have been given a three‐step approach to line extension management.

The purpose of this empirical paper is to determine the effects of line extension introductions on parent brand equity.

The paper uses a cross‐sectional sample of 318 supermarket brands. A system of equations is proposed and estimated using seemingly unrelated regression.

Brands benefit from line extension introductions, but only high equity brands benefit from innovation. Low equity brands benefit from the solo advertising of their new line extensions.

The results suggest that there are two routes for improving brand equity; high equity brands can introduce innovative products, while low equity parent brands may improve brand equity by supporting new line extensions with solo advertising.

The paper is important in identifying the effects of new product introduction and innovation on brand equity.

When managers launch a new product line into a category already served, they must decide whether to launch this as a line extension or as a second brand. This research seeks to identify how this decision is influenced by the position of the original product and the options available for positioning the new product. A model of the influences on brand and line extension success is developed and used to formulate a series of competing hypotheses about the factors that influence the decisions of managers. These hypotheses are tested using survey data from producers in the Australian wine industry. The results suggest managers seek to exploit the benefits available from the transfer of attributes to the new line, and minimise the risk of cannibalisation.

Vertical line extension is an attractive growth strategy that allows brands to address heterogeneous consumer needs and react to competitive pressure. The purpose of this paper is to systematically review and summarize vertical line extension research to derive general insights into vertical upward and downward line extension.

Drawing on a systematic review of 536 academic articles and predefined inclusion criteria, this research identifies and evaluates all articles that add knowledge to the topic of vertical line extension (n = 64).

This research derives general insights in several vertical line extension-specific issues. Different forms of vertical line extension, conceptual differences between upward and downward extensions, as well as the role of perceived fit, extension degree and the parent brand are crucial for the study and evaluation of extension and parent brand feedback effects. Those effects are complex and often work in opposing directions not only for the parent brand but also for the extension. Future research needs to face that complexity as well as methodological issues and different research contexts to further advance the literature stream.

This paper provides a comprehensive, state-of-the-art review of vertical line extension research characteristics and results. It provides new insights on the characteristics and effects of vertical line extensions and guides future research on the topic.

The purpose of this paper is to empirically assess the impact of branding strategies on horizontal and downward line extensions of French luxury brands in a cross-national context (France vs USA).

This study is based on a two line extensions (horizontal/downward) × three branding strategies (direct brand/sub-brand/standalone brand) x two country (France/USA) between-subjects ANOVA design.

The study shows that the subtyping effect created by a sub-branded luxury downward line extension tends to be rated similarly to a direct branded extension which oppose previous beliefs put forward in non-luxury settings. In contrast, a new independent/standalone extension fully uses the subtyping effect which helps attenuate this risk related to luxury downward stretches. The study also found that the effect of gender in cross-national settings must always be taken into consideration as significant variations occur in the process.

The study covers two countries but should be replicated in other cross-national contexts.

This study helps marketing managers of luxury brands make a better decision when it comes to launching vertical line extensions (upscale/downward) by carefully using types of branding strategies and relevant communications whether women and/or men are targeted in cross-national contexts.

This study breaks new ground in the international luxury literature by providing key theoretical and managerial insights in terms of launching new downward line extensions with the proper use of branding strategies when targeting specific genders.

The purpose of this study is to examine how perceived fit between a line/brand extension and its parent brand moderates the evaluation of two economically identical promotions, i.e. buy one get one free (BOGOF) and 50 per cent off. A travel-sized painkiller is the product in this study.

A 2 (perceived fit: high or low) × 2 (promotion type: BOGOF or 50 per cent off) between-subjects design is used in this study. Participants, who are college students, are randomly assigned to the four experimental conditions.

The results indicate that parent brand attitude is more closely associated with line-extension attitude than with brand-extension attitude, line extension leads to lower perceived performance risk and higher stockpiling tendency than brand extension and BOGOF is preferred over 50 per cent off for line extension but 50 per cent off is preferred over BOGOF for brand extension.

For a low-price, non-conspicuous and stock-up product category such as painkillers, marketers should consider using BOGOF to promote a line extension and 50 per cent off to promote a brand extension. It is important to explore in future research as to how the findings can be applied to other product categories, other promotion types, other packages and non-student consumers.

This study is the first that examines how perceived fit of a line/brand extension moderates the evaluation of economically identical promotions. It integrates the literature of line/brand extension, perceived performance risk and prospect theory to advance the research on sales promotions for new products.

The purpose of this paper is to investigate the extent to which the accessibility of established parent brand information and the diagnosticity of newly launched horizontal and upward service line extensions affect transfer and reciprocal transfer of brand associations.

A field study using a survey methodology based on a 2×2 experimental random design was conducted with a sample representative of the target population of an established bank in Eastern Canada. Two levels of parent brand accessibility (high/low) and two levels of line extension (upward/horizontal) were tested. Pretests were conducted, and the analysis of results was done using a three-point-in-time confirmatory factorial analysis for each cell.

The findings indicate that for a newly launched horizontal service line extension, when accessibility of an established parent brand is high, information transfer and reciprocal transfer of brand associations is strong and complete. When accessibility is low, transfer is strong but incomplete, leading to partial dilution of the parent brand. In the case of a newly launched upward service line extension, for both high- and low-accessibility contexts, only key diagnostic parent brand associations transfer to the extension. Reciprocal transfer is strong, leading to a significant dilution of the parent brand.

Other kinds of extensions (e.g. downward, distant), other types of services, and consumer goods could be tested to observe the extent to which transfer works.

This study provides key findings to managers who are responsible for launching newly created service line extensions (horizontal and upward). When evaluating a new vertical service line extension, consumers actively process the available information at hand (e.g. print advertising, point-of-purchase materials), but key diagnostic associations of the parent brand tend to persist over time. Thus, marketers must be careful when using or not using parent brand information during launch, though an upward service line extension is likely to dilute the parent brand’s equity, either positively or negatively.

This paper brings new insights to the service branding literature with respect to the dynamics of transfer of brand associations between service line extensions (horizontal and upward) and their parent brands. Drawing on the accessibility-diagnosticity framework, it closes an important theoretical knowledge gap regarding the persistence over time of accessible vs diagnostic parent brand information in the mechanisms of transfer of brand associations to and from different types of service extensions.

Literature in brand extensions has relied greatly on categorization theory and on prototypical models of categorization to explain the affect transfer from a parent brand to its extensions. Drawing on the range theory exemplar models of categorization, this paper aims to show the effects of parent brand endpoint prices on consumer judgments of vertical line extensions.

Three experiments have been conducted. Experiment 1 tests the hypothesis that consumers rely on the parent brand price range when making judgments of an upscale extension. Experiment 2 tests the hypothesis that the effect of price range on extension evaluation is mediated by perceived risks for upscale extensions but not downscale extensions. The final experiment shows a boundary condition to the product line range effect on upscale extensions.

This research shows that upscale extensions are judged more favorably in the context of a wide versus a narrow product line even when the highest endpoints in both product lines are equally close to the extension and that this effect is mediated by perceived consistency and perceived risk. The range effect disappears, however, when consumers have a broad focus in which attention shifts to category endpoint prices, making parent brand prices less diagnostic of upscale extension judgments.

Managers may display a wider range of products and/or reduce prices of low-end models to expand product line price width. In consequence, low-end products become more competitive in terms of price and at the same time improve favorability ratings of the new upscale product.

Vertical line extensions and product line pricing are important topics to both academics and practitioners. Nonetheless, this is the first research to demonstrate how product line price width can influence consumer perceptions of vertical line extensions.