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1.
New product development practices (NPD) have been well studied for decades in large, established companies. Implementation of best practices such as predevelopment market planning and cross‐functional teams have been positively correlated with product and project success over a variety of measures. However, for small new ventures, field research into ground‐level adoption of NPD practices is lacking. Because of the risks associated with missteps in new product development and the potential for firm failure, understanding NPD within the new venture context is critical. Through in‐depth case research, this paper investigates two successful physical product‐based early‐stage firms' development processes versus large established firm norms. The research focuses on the start‐up adoption of commonly prescribed management processes to improve NPD, such as cross‐functional teams, use of market planning during innovation development, and the use of structured processes to guide the development team. This research has several theoretical implications. The first finding is that in comparing the innovation processes of these firms to large, established firms, the study found several key differences from the large firm paradigm. These differences in development approach from what is prescribed for large, established firms are driven by necessity from a scarcity of resources. These new firms simply did not have the resources (financial or human) to create multi‐ or cross‐functional teams or organizations in the traditional sense for their first product. Use of virtual resources was pervasive. Founders also played multiple roles concurrently in the organization, as opposed to relying on functional departments so common in large firms. The NPD process used by both firms was informal—much more skeletal than commonly recommended structured processes. The data indicated that these firms put less focus on managing the process and more emphasis on managing their goals (the main driver being getting the first product to market). In addition to little or no written procedures being used, development meetings did not run to specific paper‐based deliverables or defined steps. In terms of market and user insight, these activities were primarily performed inside the core team—using methods that again were distinctive in their approach. What drove a project to completion was relying on team experience or a “learn as you go approach.” Again, the driver for this type of truncated market research approach was a lack of resources and need to increase the project's speed‐to‐market. Both firms in our study were highly successful, from not only an NPD efficiency standpoint but also effectiveness. The second broad finding we draw from this work is that there are lessons to be learned from start‐ups for large, established firms seeking ever‐increasing efficiency. We have found that small empowered teams leading projects substantial in scope can be extremely effective when roles are expanded, decision power is ground‐level, and there is little emphasis on defined processes. This exploratory research highlights the unique aspects of NPD within small early‐stage firms, and highlights areas of further research and management implications for both small new ventures and large established firms seeking to increase NPD efficiency and effectiveness.  相似文献   

2.
Entrepreneurial biotech and large pharmaceutical firms often form alliances to co‐develop new products. Yet, new product development (NPD) is fraught with challenges that often result in project suspensions and failures. Considering this, how can firms increase the chances that their co‐development alliances will create value? To answer this question, the authors build on insights from signaling theory to argue that prior project suspensions provide positive signals leading to an increase in value creation, while project failures have the opposite effect. In addition, drawing on insights from temporal construal theory, this research predicts that the strength of these effects is contingent on the stage along the exploration–exploitation continuum at which the alliance is formed. The authors undertook event study analyses of 248 alliances formed by 104 biotechnology firms from the United States and Europe listed on eight stock exchanges over an 8‐year period between 1996 and 2003. The results confirm that prior NPD project suspensions have a stronger value creation effect (or prior failures have a weaker value destruction effect) in the case of exploration alliances in the upstream of NPD processes than in the case of moderate‐scale exploitation alliances in the downstream of NPD. This study is among the first to examine how both prior NPD project suspensions and failures of firms affect the abnormal returns achieved from co‐development alliances. This research therefore contributes to the innovation literature by honing a better understanding of setbacks and failures in NPD. Moreover, the findings contribute to the literature on strategic alliances by identifying new conditions under which firms can create or preserve value. This research also contributes to signaling theory by providing evidence of the moderation effect caused by the signaling environment. Finally, this study contributes to the entrepreneurial literature on value creation for entrepreneurial firms in alliances following adverse events.  相似文献   

3.
4.
Just as reporters must answer a few fundamental questions in every story they write, decision-makers in the new product development (NPD) process must address five key issues: what to launch, where to launch, when to launch, why to launch, and how to launch. These decisions involve significant commitments of time, money, and resources. They also go a long way toward determining the success or failure of any new product. Deeper insight into the tradeoffs these decisions involve may help to increase the likelihood of success for product launch efforts. Erik Jan Hultink, Abbie Griffin, Susan Hart, and Henry Robben present the results of a study that examines the interplay between these product launch decisions and NPD performance. Noting that previous launch studies focus primarily on the tactical decisions (that is, how to launch) rather than on the strategic decisions (what, where, when, and why to launch), they explore not only which decisions are important to success, but also the associations between the two sets of decisions. Because the strategic launch decisions made early in the NPD process affect the tactical decisions made later in the process, their study emphasizes the importance of launch consistency—that is, the alignment of the strategic and tactical decisions made throughout the process. The survey respondents—managers from marketing, product development, or general management in U.K. firms—provided information about 221 industrial new products launched during the previous five years. The responses identify associations between various sets of strategic and tactical decisions. That is, the responses suggest that the strategic decisions managers make regarding product innovativeness, market targeting, the number of competitors, and whether the product is marketing- or technology-driven are associated with subsequent tactical decisions regarding branding, distribution expenditure and intensity, and pricing. The study also suggests that different sets of launch decisions have differing effects on performance of industrial new products. In this study, the greatest success was enjoyed by a small group of respondents categorized as Niche Innovators. Their launch strategy involves a niche focus, targeting innovative products into markets with few competitors. Tactical decisions made by this group include exclusive distribution, a skimming pricing strategy, and a broad product assortment.  相似文献   

5.
A growing body of literature indicates that the new product development (NPD) process in technology‐based, industrial markets is characterized by collaborative seller‐buyer relationships. Unfortunately, the extant literature is deficient in some significant ways. For example, there is no theoretical framework that explicates the content of these relationships. Also, there is little empirical research on the antecedents or consequences of these relationships. Therefore, managers seeking guidance on how to manage their NPD relationships have lacked appropriate insights. Not surprisingly, ineffective relationship management is a major contributor to new product failure in such settings. Against this background, this study develops and tests a model of seller‐buyer interactions during NPD. The model is based on the relationship marketing literature and is rooted in Transaction Cost Analysis (TCA). It was tested using data from 296 small to mid‐sized firms in a variety of technology‐based, industrial markets. It specifies product co‐development, education, and post‐installation product knowledge generation as three key behavioral dimensions that characterize seller‐buyer interactions during NPD. Our results indicate that the intensity with which these dimensions are undertaken vary with buyer‐related (i.e., perceived buyer knowledge and prior relationship history) and innovation‐related (i.e., product customization and innovation discontinuity) characteristics. For example, perceived buyer knowledge has a positive impact on product co‐development while innovation discontinuity has a positive impact on education. Further, we find that a seller's satisfaction with undertaking these behaviors is moderated by the technological uncertainty in the seller's industry. As a case in point, satisfaction with undertaking product co‐development is reduced when technological uncertainty is high. Collectively, the overall support we find for our model can help NPD managers optimize their relationships with buyers during NPD.  相似文献   

6.
Radical or “discontinuous” products based on new technological breakthroughs are playing an ever‐increasing role in the success of firms. However, little research has been conducted that investigates the roles of marketing and industrial design (ID) in the development of these types of products. Further, past research has tended to overlook the role that industrial design, and the impact of the marketing‐industrial design interaction, can have on the development of discontinuous new products. Frequently, the term design is used broadly or is equated with engineering; thus, while the marketing–research and development (R&D) interaction is studied, the marketing–ID as well as the industrial design–R&D relationships are not considered. This article examines the roles of marketing and industrial design in the product development process for discontinuous innovations. Specifically, questions concerning how and the degree to which marketing and industrial design are integrated into the development process are investigated. The investigation employs multiple methods, or triangulation, in order to secure an in‐depth understanding of the roles of these disciplines. In the course of examining these questions, key factors influencing industrial design and marketing involvement are identified and preliminary models are examined. The research, which was conducted in two phases, employed a mixed‐method, multiple sample design. The methods used included a survey, field observation study, and depth‐interviewing. Data were collected from three different samples: R&D managers, project team members (including personnel from various disciplines—marketing, R&D, industrial design, engineering, etc.), and industrial design managers. The use of the different data sources and sampling of various groups of managers was employed in order to provide a rich context for investigating the research questions of interest. In addition, a preliminary analysis of factors (e.g., degree of product discontinuity, product innovation objectives, process discontinuity, process formality) identified in the first phase was conducted, and these relationships were explored further in the second phase of the research. Findings across the two phases of this research suggest that the development of discontinuous new products involves a process that is different from more conventional new product development—particularly as it concerns the roles of marketing and industrial design. The high degree of discontinuity inherent in such projects, along with the strong R&D orientation often surrounding them, results in delayed involvement of marketing and ID, as well as altering their roles in the new product development (NPD) process. Factors such as the degree of product discontinuity (DPD), process discontinuity (PCD), and process formality (PF) seemed to exert a differential influence on the involvement of marketing and ID. Although their roles and involvement are altered in discontinuous new product development, this research suggests that marketing and ID roles in this context involve increased challenges with respect to validation of key assumptions and product application directions. Additionally, managers operating in this development context need to explicitly consider the influence of factors such as discontinuity level in undertaking NPD projects with respect to how it affects the execution of industrial design and marketing activities.  相似文献   

7.
Despite the acknowledgement of functional integration as an important driver of new product development (NPD) success and the growing recognition of the significance of industrial design (ID), the integration between industrial design and other functional units in NPD has been rarely researched. In this article, we examine the marketing and ID integration in NPD in the context of China. Mainly based on Cooper's (1994) stage‐gate phases of NPD process and Gupta, Raj, and Wilemon's (1985) categorization of NPD activities, we develop a conceptual framework that identifies 29 areas that might require integration or where integration might occur between marketing and ID. Specifically, we investigate and compare the current and the ideal integration between marketing and ID perceived by the two functions. An analysis of data from 113 companies reveals that the current level of integration fell short of the ideal level of integration in all the phases of NPD. Both managers believed in the descending trend of integration along the stage‐gate NPD phases and were dissatisfied with the current level of integration in all the NPD phases. Except for a few areas of agreement, marketing and ID managers showed significant differences with each other in their perceptions of the current and the ideal integration in most of the 29 areas. Despite the disagreements however, the two functions agreed with each other on the most important areas that require integration and achieved the highest level of marketing–ID integration. These findings suggest that firms should improve the marketing–ID integration in all the NPD phases and that management could improve the effectiveness of marketing–ID integration by prioritizing and focusing on the most important areas. Research and managerial implications, limitations, and future research directions are presented in the paper.  相似文献   

8.
9.
This study examines the most valuable sources of new product ideas and the criteria used to screen potential new products in entrepreneurial, high-tech firms. Teresa Pavia explored the practices of 118 small, young, high-tech firms. Her findings complement a variety of existing studies of the new product process in large firms and the few existing studies of the process in entrepreneurial, high-tech firms. The firms participating in this study rely on informal techniques to generate new product ideas. They place heavy reliance on input from their customers and often develop new products in response to problems articulated by these customers. Although the annual strategic plan is not used by most firms as a new product identification tool, it is highly rated by the most successful firms. Successful firms also actively engage in environmental scanning. The majority of the respondents do not use financial measures as a screening criterion, preferring to evaluate new products by "gut feel." However, the firms that have experienced the fastest growth in sales employ financial hurdles for project selection. The educational background of the key GO/NO GO decision-makers was also evaluated. Two thirds of the firms reported having a key decision-maker with an educational background in business. The educational background of the key decision-makers had little impact on the aspects of the new product process studied here.  相似文献   

10.
To face the challenges of increasing demand for variety, more specific customer demands and shortening product life cycles, firms increasingly adopt mass customization techniques. Two important such techniques are product modularization and product platform development, which allow firms to reach high levels of product variety, and at the same time, keep complexity and its related costs at a limited level. Often modularization and product platform development are treated as variants of the same basic idea. However, even if the concepts are closely related, they also have some fundamental differences, which influence their usefulness and applicability in different settings. One potential shortcoming of existing literature on modularization and product platforms is the present lack of research on their limitations and potential negative effects. Therefore, the purpose of this paper is to identify and explore contingencies influencing the applicability of modularization and product platforms, respectively, taking their different economic effects as a starting point. Moreover, the paper addresses how different organizing solutions are interrelated with the use of modularization and product platform approaches. The empirical observations originate from studies of three Swedish manufacturing firms. The study reveals that important contingencies affecting the applicability of modularization and product platforms are demand side characteristics and the speed of environmental change. Furthermore, it is seen that firms need to organize themselves differently with respect to how they combine modularization and platforms, for example, in terms of degree of centralization, formalization, and allocation of decision‐making authority, and that this poses challenges to the combined use of the two approaches.  相似文献   

11.
Industrial Companies' Evaluation Criteria in New Product Development Gates   总被引:4,自引:0,他引:4  
This article presents the results of a study on the evaluation criteria that companies use at several gates in the NPD process. The findings from 166 managers suggest that companies use different criteria at different NPD evaluation gates. While such criteria as technical feasibility, intuition and market potential are stressed in the early‐screening gates of the NPD process, a focus on product performance, quality, and staying within the development budget are considered of paramount importance after the product has been developed. During and after commercialization, customer acceptance and satisfaction and unit sales are primary considerations. In addition, based on the performance dimensions developed by Griffin and Page (1993), we derive patterns of use of various evaluative dimensions at the NPD gates. Our results show that while the market acceptance dimension permeates evaluation at all the gates in the NPD process, the financial dimension is especially important during the business analysis gate and after‐market launch. The product performance dimension figures strongly in the product and market testing gates. The importance of our additional set of criteria (i.e., product uniqueness, market potential, market chance, technical feasibility, and intuition) decreases as the NPD process unfolds. Overall the above pattern of dimensions' usage holds true for both countries in which we collected our data, and across firms of different sizes, holding different market share positions, with different NPD drivers, following different innovation strategies, and developing different types of new products. The results also are stable for respondents that differ in terms of expertise and functional background. The results of this study provide useful guidelines for project selection and evaluation purposes and therefore can be helpful for effective investment decision‐making at gate‐meetings and for project portfolio management. We elaborate on these guidelines for product developers and marketers wishing to employ evaluation criteria in their NPD gates, and we discuss directions for further research.  相似文献   

12.
William L. Moore personally interviewed a number of senior managers employed in 25 large industrial marketing companies about new product development practices. These managers are familiar with all phases of the development of typical new products, from the time ideas are generated until market introduction. Most respondents were either division heads or those directly responsible for a division's new product development program. In agreement with a previous study, the use of formal new product strategies and sophisticated quantitative marketing research techniques was found to be lacking in most companies. However, many other elements of the new product development process were carried out more completely than previously reported. For example, respondents reflected sensitivity to informal understanding of new product strategies. A number of the less sophisticated, small scale qualitative research methods actually used may be more appropriate than more sophisticated methods. While several research areas are suggested, the general assessment of the new product practices of these firms is more positive than that of Feldman and Page.  相似文献   

13.
The purpose of this research was to explore the nature of the Stage‐Gate®process in the context of innovative projects that not only vary in new product technology (i.e., radical versus incremental technology) but that also involve significant new product development technology (i.e., new virtual teaming hardware‐software systems). Results indicate that firms modify their formal development regimes to improve the efficiency of this process while not significantly sacrificing product novelty (i.e., the degree to which new technology is incorporated in the new offering). Four hypotheses were developed and probed using 72 automotive engineering managers involved in supervision of the new product development process. There was substantial evidence to creatively replicate results from previous benchmarking studies; for example, 48.6% of respondents say their companies used a traditional Stage‐Gate®process, and 60% of these new products were considered to be a commercial success. About a third of respondents said their companies are now using a modified Stage‐Gate®process for new product development. Auto companies that have modified their Stage‐Gate®procedures are also significantly more likely to report (1) use of virtual teams; (2) adoption of collaborative and virtual new product development software supporting tools; (3) having formalized strategies in place specifically to guide the new product development process; and (4) having adopted structured processes used to guide the new product development process. It was found that the most significant difference in use of phases or gates in the new product development process with radical new technology occurs when informal and formal phasing processes are compared, with normal Stage‐Gate®usage scoring highest for technology departures in new products. Modified Stage‐Gate®had a significant, indirect impact on organizational effectiveness. These findings, taken together, suggest companies optimize trade‐offs between cost and quality after they graduate from more typical stage‐process management to modified regimes. Implications for future research and management of this challenging process are discussed. In general, it was found that the long‐standing goal of 50% reduction in product development time without sacrificing other development goals (e.g., quality, novelty) is finally within practical reach of many firms. Innovative firms are not just those with new products but also those that can modify their formal development process to accelerate change.  相似文献   

14.
This study identifies factors that seem to influence a new firm's ability to accurately forecast new product sales. William Gartner and Robert Thomas present a conceptual model and develop hypotheses that specify antecedent factors prior to new product launch, such as the founder's expertise and the marketing research methods used, as well as environmental factors occurring after product launch, such as competitive factors and market volatility, that influence new product forecasting accuracy. The hypotheses were tested with data collected from a survey of 113 new U.S. software firms. Some tentative guidelines for improving sales forecast accuracy among new firms are offered. Directions for future research are discussed.  相似文献   

15.
As different types of knowledge may have different effects on new product positional advantage, knowledge portfolio management in concert with the firm's strategic orientation is indispensable for new product success. However, previous research has not dealt with the knowledge resources and strategic implementations that affect new product development (NPD). To fill in this gap, the current study focuses on two dimensions of knowledge type (knowledge complexity and knowledge tacitness) and two forms of strategic orientation (technological orientation and market orientation), which influence the positional advantages as determinants of NPD outcomes. Drawing on the resource‐based view, this study explains how these knowledge and strategic orientation variables influence new product creativity, which comprised the novel and meaningful characteristics of new products. Finally, it demonstrates how these two dimensions of new product creativity differentially provide product advantages in terms of customer satisfaction and product differentiation, which lead to superior new product performance. A conceptual framework is developed and the related hypotheses provided to incorporate the study variables and to test their relationships in a sample based on data collected from both marketing and project managers from 100 U.S. high‐technology firms. The model estimation results from path analysis demonstrate that reliance on knowledge of high tacitness harms meaningfulness, while reliance on knowledge of high complexity increases both novelty and meaningfulness of new product. As expected, market orientation and technological orientation improve the meaningfulness and novelty dimensions of the new product, respectively. New product novelty and meaningfulness are shown to enhance new product advantage in terms of product differentiation and customer satisfaction, both of which contribute to new product performance. It is also found that the combinative use of market orientation and knowledge complexity, and technological orientation and knowledge tacitness positively influence both the novelty and meaningfulness of new products. This study, using the product‐level analysis, contributes to the literature by clarifying how the firm's different knowledge properties and strategic orientations both play a role as a source of new product creativity, and how new product creativity, as a valuable and rare resource, enhances new product advantage. The study results suggest that project/product managers should increase the transferability and codifiability of unstructured knowledge by stimulating intraorganizational knowledge sharing among NPD team members, and that they should promote both technology and market‐orientated practices to fully develop creativity of new products.  相似文献   

16.
Increasingly, the design of successful new industrial products is related to careful market assessment. Traditionally, managers and researchers have studied their markets by examining a small number of product attributes that are common across a range of informed respondents. In many ways, these techniques fail to meet the challenges posed by today's often heterogeneous, highly competitive, fast moving industrial markets. Ralph Keeney and Gary Lilien introduce us to a technique they call multiattribute value analysis, both describing the procedure and describing a comprehensive example. Their approach introduces considerable flexibility to the process of market assessment. Technically, it permits the evaluation of many more attributes, value tradeoffs, and synergies among attributes than do more traditional methods. In addition, it permits nonlinear evaluation functions that may be idiosyncratic to the individual. Practically, their approach, illustrated with a detailed case application, is shown to have significant potential for aiding product design decisions.  相似文献   

17.
Prior research into the link between new product development and market segmentation has focused on two main approaches: (1) design, segment, and do limited competitive evaluation; and (2) segment first, design second. This paper proposes a third approach, which is to simultaneously design, perform segmentation according to benefit and to evaluate against competitive designs. This research uses a benefit segmentation technique based on conjoint analysis (or other techniques that relate product attributes to consumer utility) in which the segments emerge simultaneously with the design based on certain design principles or “strategies.” Herein a method is proposed to narrow down the many possible feasible designs (combinations of attributes) to a finite set and to examine the appeal of each design. Five distinct design strategies are proposed for modeling and studying competitive reaction. These include “traditional” ones such as differentiation and new ones whose fringe customers have high utility. The paper shows that these five strategies are adequate for modeling competitive reaction using simulation. Another contribution of the paper is the way competitive reaction is modeled. In generating and evaluating a design the desire herein is also to assess the defensibility of the design and include it in the evaluation criteria. These issues are addressed by decomposing the solution procedure into two phases. In the first phase, different optimal designs are created based on predefined product development strategies. In the second, these optimal designs are compared against one another with regard to market share and potential to secure market leadership. This work shows that the nature of competition as well as the variability of customer preferences are critical to how a strategy performs. This process uncovers a surprisingly robust design strategy—developing attributes such that a “lower fringe” is most satisfied—that even achieves market dominance under certain conditions. This methodology is also applied to partworth data on refrigerators, which provides a concrete example of the concepts and demonstrates results consistent with the propositions developed earlier in the paper.  相似文献   

18.
19.
While strategic flexibility is widely accepted as a prerequisite for a firm's success, its application in strategic decision making to a firm's new product development (NPD) activities is limited to only a few studies. Furthermore, many organizations still have difficulties creating proactive strategic flexibility in their decision‐making processes. Past research studies have largely ignored the relationship between strategic decision‐making flexibility and firms' resources and/or capabilities and success in the context of NPD. This study advances strategic flexibility by adopting the proactive approach of NPD decision‐making flexibility and by examining its role in translating organizational resources and capabilities into NPD success. This study draws upon the resources, capabilities (i.e., flexibility), and performance framework to show how proactive strategic decision‐making flexibility plays a crucial role in developing new products that can create new opportunities and comply with market needs. Therefore, this research aims to (1) develop an operational definition of strategic decision‐making flexibility and (2) propose a framework to understand the drivers and the subsequent new product performance outcomes of strategic decision‐making flexibility. This study adopts the proactive perspective of strategic decision‐making flexibility and defines it as a capability that enables firms to develop NPD strategies to respond to future changes in the environment. The analysis, based on data collected from 103 European firms, shows that that the effects of long‐term orientation, strategic planning, internal commitment, and innovative climate on proactive strategic decision‐making flexibility are significant. The findings indicate specifically the roles of both champions and gatekeepers, who infuse a firm's knowledge with a clear understanding of its resources, constraints, and market needs, thereby enhancing decision makers' motivation to behave proactively to precipitate transformation. The results also reveal a positive association between proactive strategic decision‐making flexibility and NPD performance outcomes. As such, strategic flexibility provides firms with an ability to adapt to changing environments and to create new market opportunities, product, and technological arenas, and to deliver successful new products. When firms open new market, technological, and product arenas, they can easily foresee their new demands and changes and successfully deliver new products, meeting customer needs/demands, and offering benefits such as quality, cost, and timeliness. This study therefore provides a valuable reference point for future research in strategic decision‐making flexibility in NPD.  相似文献   

20.
Over the past 20 years, the use of digital design tools such as Computer‐Aided‐Design (CAD) has increased dramatically. Today, almost no product development project is conducted without the use of CAD models. Major advantages typically ascribed to using CAD include better solutions through broader exploration of the solution space as well as faster and less expensive projects through faster and earlier iterations. This latter effect, the shifting of simulation and testing traditionally accomplished with the help of physical prototypes late in the process—a slow and expensive activity—to doing similar activities with virtual prototypes faster and earlier in the process, has been identified as a key aspect of front‐loading, an activity shift promising to enable superior product development (PD) performance. Given CAD's recent pervasive use, the research questions for this paper became “how has CAD use actually changed the way in which product development is conducted, and through which mechanisms and pathways can CAD impact PD performance, especially with respect to the idea of front‐loading?” This paper addresses these questions by studying in a longitudinal comparison in detail two similar product development projects, one conducted in 2001, the other in 2009. The projects were carefully selected to isolate the substantially higher levels of CAD use of the second project while controlling for most other input factors that influence project performance. The project with substantially higher use of CAD exhibited significant improvements in prototyping costs but only marginal changes in project time and project engineering labor cost relative to the project with lower CAD use. In‐depth intra‐project analysis on the phase level reveals that the use of CAD affected how the product development was executed, with both positive and negative consequences. In addition to, and separate from positive aspects of front‐loading, unintended consequences in the form of back‐loading work are also observed. Back‐loading can occur in two places in the product development process: First, the availability of CAD systems can cause an early jump into detail design, effectively shortcutting concept development. Second, the ability to relatively quickly conduct small changes virtually to the design can erode process discipline; late changes are made simply because they are possible. Both of these effects back‐load work in the opposite direction of the positive front‐loading. The theoretical implications of our observations are discussed, and a simple framework to convert our findings into managerial advice is proposed.  相似文献   

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