Abstract
Salespeople assume a key role in defending firms’ price levels in price negotiations with customers. The degree to which salespeople defend prices should critically depend upon their leaders’ influence. However, the influence of leadership on salespeople’s price defense behavior is barely understood, conceptually or empirically. Therefore, building on social learning theory, the authors propose that salespeople might adopt their leaders’ price defense behavior given a transformational leadership style. Furthermore, drawing on the contingency leadership perspective, the authors argue that this adoption fundamentally depends on three variables deduced from the motivation–ability–opportunity (MAO) framework, that is, salespeople’s learning motivation, negotiation efficacy, and perceived customer lenience. Results of a multi-level model using data from 92 salespeople and 264 salesperson–customer interactions confirm these predictions. The first to explore contingencies of salespeople’s adoption of their transformational leaders’ price negotiation behaviors, this study extends marketing theory and provides actionable guidance to practitioners.
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Notes
Following prior works in this literature stream, we do not take a normative stance on the question whether salespeople should or should not grant discounts to customers. Instead, our work is of explicative nature and aims to improve our understanding of the factors that factually drive salespeople’s price defense.
An alternative hypothesis may be that a salesperson whose negotiation efficacy is low may imitate a leader’s price defense in search for orientation and improvement. However, if negotiation efficacy is low, the salesperson may try to learn with lower self-regulation and higher stress, which decreases learning success (Zimmerman 2000). Thus, we expect the net moderating effect of negotiation efficacy to be positive.
References
Ahearne, M., Mathieu, J., & Rapp, A. (2005). To empower or not to empower your sales force? an empirical examination of the influence of leadership empowerment behavior on customer satisfaction and performance. Journal of Applied Psychology, 90(5), 945–955.
Alavi, S., Wieseke, J., & Guba, J. H. (2016). Saving on discounts through accurate sensing – salespeople's estimations of customer price importance and their effects on negotiation success. Journal of Retailing, 92(1), 40–55.
Alexander, J. F., Schul, P. L., & Babakus, E. (1991). Analyzing interpersonal communications in industrial marketing negotiations. Journal of the Academy of Marketing Science, 19(2), 129–139.
Antonakis, J., Fenley, M., & Liechti, S. (2011). Can charisma be taught? Tests of two interventions. Academy of Management Learning & Education, 10(3), 374–396.
Avolio, B. J. (2007). Promoting more integrative strategies for leadership theory-building. American Psychologist, 62(1), 25–33.
Avolio, B. J., Bass, B. M., & Jung, D. I. (1999). Re-examining the components of transformational and transactional leadership using the multifactor leadership questionnaire. Journal of Occupational and Organizational Psychology, 72(4), 441–462.
Bagozzi, R. P., & Yi, Y. (1988). On the evaluation of structural equation models. Journal of the Academy of Marketing Science, 16(1), 74–94.
Bandura, A. (1969a). Social learning of moral judgments. Journal of Personality and Social Psychology, 11(3), 275–279.
Bandura, A. (1969b). Social-Learning Theory of Identificatory Processes. In D. A. Goslin (Ed.), Handbook of Socialization: Theory and Research (pp. 213–262). Chicago: Rand McNally.
Bandura, A. (1971). Social Learning Theory. New York: General Learning Press.
Bandura, A. (1977). Self-efficacy: toward a unify theory of behavioural change. Psychological Review, 84(2), 191–215.
Bandura, A. (1997). Self-efficacy: The exercise of control. New York: W H Freeman/Times Books/Henry Holt & Co.
Bass, B. M. (1985). Leadership and Performance Beyond Expectations. New York: Free Press.
Bass, B. M., & Riggio, R. E. (2006). Transformational leadership. Mahwah: L. I Lawrence Erlbaum.
Bhardwaj, P. (2001). Delegating pricing decisions. Marketing Science, 20(2), 143–169.
Blanchard, S. J., Carlson, K. A., & Hyodo, J. D. (2016). The favor request effect: requesting a favor from consumers to seal the deal. Journal of Consumer Research, 42(6), 985–1001.
Boichuk, J. P., Bolander, W., Hall, Z. R., Ahearne, M., Zahn, W. J., & Nieves, M. (2014). Learned helplessness among newly hired salespeople and the influence of leadership. Journal of Marketing, 78(1), 95–111.
Brett, J. M., Friedman, R., & Behfar, K. (2009). How to manage your negotiating team. Harvard Business Review, 87(9), 105–109.
Brown, M. E., & Treviño, L. K. (2014). Do role models matter? An investigation of role modeling as an anecedent of perceived ethical leadership. Journal of Business Ethics, 122(4), 587–598.
Chakrabarty, S., Brown, G., & Widing II, R. E. (2013). Distinguishing between the roles of customer-oriented selling and adaptive selling in managing dysfunctional conflict in buyer–seller relationships. Journal of Personal Selling & Sales Management, 33(3), 245–260.
Colbert, A. E., Kristof-Brown, A. L., Bradley, B. H., & Barrick, M. R. (2008). CEO transformational leadership: The role of goal importance congruence in top management teams. Academy of Management Journal, 51(1), 81–96.
Conger, J. A., & Kanungo, R. N. (1987). Toward a behavioral theory of charismatic leadership in organizational settings. Academy of Management Review, 12(4), 637–647.
Consumer Reports. (2016). Why haggling for your next car really pays. Retrieved July 27, 2016 from http://www.consumerreports.org/used-car-buying/why-haggling-for-your-next-car-really-pays/
CSO Insights. (2011). 2011 Sales performance optimization benchmark. Littleton: Miller Heiman Group.
CSO Insights. (2014). Sales management optimization study: 2014 key trend analysis. Littleton: Miller Heiman Group.
Darke, P. R., & Dahl, D. W. (2003). Fairness and discounts: The subjective value of a bargain. Journal of Consumer Psychology, 13(3), 328–338.
De Dreu, C. K. W., & van Kleef, G. A. (2004). The influence of power on the information search, impression formation, and demands in negotiation. Journal of Experimental Social Psychology, 40, 303–319.
Deeter-Schmelz, D. R., & Ramsey, R. (1995). A Conceptualization of the Functions and Roles of Formalized Selling and Buying Teams. Journal of Personal Selling & Sales Management, 15(2), 47–60.
Den Hartog, D. N., & Belschak, F. D. (2012). When does transformational leadership enhance employee proactive behavior? The role of autonomy and role breadth self-efficacy. Journal of Applied Psychology, 97(1), 194–202.
Desai, P. S., & Purohit, D. (2004). “Let me talk to my manager”: Haggling in a competitive environment. Marketing Science, 23(2), 219–233.
Dubinsky, A. J., Yammarino, F., Jolson, M. A., & Spangler, W. D. (1995). Transformational leadership: an initial investigation in sales management. Journal of Personal Selling & Sales Management, 15(2), 17–31.
Dwyer, F. R., Schurr, P. H., & Oh, S. (1987). Developing buyer-seller relationships. Journal of Marketing, 11–27.
Evans, K. R., & Beltramini, R. F. (1987). A theoretical model of consumer negotiated pricing: an orientation perspective. Journal of Marketing, 51(2), 58–73.
Fiedler, F. E. (1978). The contingency model and the dynamics of the leadership process. Advances in Experimental Social Psychology, 11, 59–112.
Fornell, C., & Larcker, D. F. (1981). Evaluating structural equation models with unobservable variables and measurement error. Journal of Marketing Research, 18(1), 39–50.
Frenzen, H., Hansen, A.-K., Krafft, M., Mantrala, M. K., & Schmidt, S. (2010). Delegation of pricing authority to the sales force: an agency-theoretic perspective of its determinants and impact on performance. International Journal of Research in Marketing, 27(1), 58–68.
Furst, S. A., & Cable, D. M. (2008). Employee resistance to organizational change: managerial influence tactics and leader-member exchange. Journal of Applied Psychology, 93(2), 453.
Galinat, W. H., & Müller, G. F. (1988). Verbal responses to different bargaining strategies: a content analysis of real life buyer seller interaction. Journal of Applied Social Psychology, 18(2), 160–178.
Ganesan, S. (1993). Negotiation strategies and the nature of channel relationships. Journal of Marketing Research, 30(2), 183–203.
Ganzach, Y. (1997). Misleading interaction and curvilinear terms. Psychological Methods, 2(3), 235–247.
Graen, G. B., & Uhl-Bien, M. (1995). Relationship-based approach to leadership: Development of leader-member exchange (LMX) theory of leadership over 25 years: Applying a multi-level multi-domain perspective. The Leadership Quarterly, 6(2), 219–247.
Gramzow, R. H., Elliot, A. J., Asher, E., & McGregor, H. A. (2003). Self-evaluation bias and academic performance: Some ways and some reasons why. Journal of Research in Personality, 37(2), 41–61.
Grewal, R., Chandrashekaran, M., Johnson, J. L., & Mallapragada (2013). Environments, unobserved heterogeneity, and the effect of market orientation on outcomes for high-tech firms. Journal of the Academy of Marketing Science, 41, 206–233.
Hackman, J. R., & Oldham, G. R. (1975). Development of the job diagnostic survey. Journal of Applied Psychology, 60(2), 159.
Hansen, A.-K., Joseph, K., & Krafft, M. (2008). Price delegation in sales organizations: An empirical investigation. Business Research, 1(1), 94–104.
Harvey, P., & Martinko, M. J. (2009). An empirical examination of the role of attributions in psychological entitlement and its outcomes. Journal of Organizational Behavior, 30(4), 459–476.
Herbst, U., Voeth, M., & Meister, C. (2011). What do we know about buyer-seller negotiations in marketing research? a status quo analysis. Industrial Marketing Management, 40(6), 967–978.
Hofmann, D. A., & Gavin, M. B. (1998). Centering decisions in hierarchical linear models: Implications for research in organizations. Journal of Management, 24(5), 623–641.
Homburg, C., Wieseke, J., & Bornemann, T. (2009). Implementing the marketing concept at the employee–customer interface: The role of customer need knowledge. Journal of Marketing, 73(4), 64–81.
Homburg, C., Wieseke, J., & Kühnl, C. (2010). Social influence on salespeople’s adoption of sales technology: A multilevel analysis. Journal of the Academy of Marketing Science, 38(2), 159–168.
Homburg, C., Jensen, O., & Hahn, A. (2012). How to organize pricing? vertical delegation and horizontal dispersion of pricing authority. Journal of Marketing, 76(5), 49–69.
House, R. J. (1996). Path-goal theory of leadership: Lessons, legacy, and a reformulated theory. The Leadership Quarterly, 7(3), 323–352.
Hox, J. J. (2010). Multilevel Analysis: Techniques and Application (2nd ed.). New York: Routledge/Taylor & Francis Group.
Huang, C.-C., Liang, W.-Y., Lai, Y.-H., & Lin, Y.-C. (2010). The agent-based negotiating process for B2C e-commerce. Expert Systems with Applications, 37(2010), 348–359.
Hüffmeier, J., Freund, P. A., Zerres, A., Backhaus, M., & Hertel, G. (2014). Being tough or being nice? A meta-analysis on hard- and softline strategies in distributive negotiations. Journal of Management, 40(3), 866–892.
Hughes, D. E., & Ahearne, M. (2010). Energizing the reseller's sales force: The power of brand identification. Journal of Marketing, 74(4), 81–96.
Hunter, S. T., Bedell-Avers, K. E., & Mumford, M. D. (2007). The typical leadership study: Assumptions, implications, and potential remedies. The Leadership Quarterly, 18(5), 435–446.
Ingram, T. N., LaForge, R. W., Locander, W. B., MacKenzie, S. B., & Podsakoff, P. M. (2005). New directions in sales leadership research. Journal of Personal Selling & Sales Management, 25(2), 137–154.
Jaramillo, F., & Mulki, J. P. (2008). Sales effort: The intertwined roles of the leader, customer, and the salesperson. Journal of Personal Selling & Sales Management, 28(1), 37–51.
Jaworski, B. J., & Kohli, A. K. (1993). Market orientation: Antecedents and consequences. Journal of Marketing, 57(3), 53–70.
Joseph, K. (2001). On the optimality of delegating pricing authority to the sales force. Journal of Marketing, 65(1), 62–70.
Kim, P. H., Pinkley, R. L., & Fragale, A. R. (2005). Power dynamics in negotiation. Academy of Management Review, 30(4), 799–822.
Kirschner, P. A. (2002). Cognitive load theory: Implications of cognitive load theory on the design of learning. Learning and Instruction, 12, 1–10.
Krafft, M., Albers, S., & Lal, R. (2004). Relative explanatory power of agency theory and transaction cost analysis in German salesforces. International Journal of Research in Marketing, 21(3), 265–283.
Kraus, F., Haumann, T., Ahearne, M., & Wieseke, J. (2015). When sales managers and salespeople disagree in the appreciation for their firm: The phenomenon of organizational identification tension. Journal of Retailing, 91(3), 486–515.
Kumar, V., Dixit, A., Javalgi, G., & Dass, M. (2016). Research framework, strategies, and applications of intelligent agent technologies (IATs) in marketing. Academy of Marketing Science Journal, 44(1), 24.
Kwon, S., & Weingart, L. R. (2004). Unilateral concessions from the other party: concession behavior, attributions, and negotiation judgments. Journal of Applied Psychology, 89(2), 263.
Lal, R. (1986). Delegating Pricing Responsibility to the Salesforce. Marketing Science, 5(2), 159–168.
Lam, S. K., Kraus, F., & Ahearne, M. (2010). The diffusion of market orientation throughout the organization: A social learning theory perspective. Journal of Marketing, 74(5), 61–79.
Li, N., Chiaburu, D. S., Kirkman, B. L., & Xie, Z. (2013). Spotlight on the followers: An examination of moderators of relationships between transformational leadership and subordinates’ citizenship and taking charge. Personnel Psychology, 66(1), 225–260.
Lim, N., & Ham, S. (2014). Relationship Organization and Price Delegation: An Experimental Study. Management Science, 60(3), 586–605.
MacKenzie, S. B., Podsakoff, P. M., & Rich, G. A. (2001). Transformational and Transactional Leadership and Salesperson Performance. Journal of the Academy of Marketing Science, 29(2), 115–134.
Mael, F., & Ashforth, B. E. (1992). Alumni and their alma mater: A partial test of the reformulated model of organizational identification. Journal of Organizational Behavior, 13(2), 103–123.
Marn, M. V., Roegner, E. V., & Zawada, C. C. (2004). The Price Advantage. Hoboken, New Jersey: Wiley Finance.
Martin, C. A., & Bush, A. J. (2006). Psychological Climate, Empowerment, Leadership Style, and Customer-Oriented Selling: An Analysis of the Sales Manager-Salesperson Dyad. Journal of the Academy of Marketing Science, 34(3), 419–438.
Mathieu, J., Ahearne, M., & Taylor, S. R. (2007). A longitudinal cross-level model of leader and salesperson influences on sales force technology use and performance. Journal of Applied Psychology, 92(2), 528.
McFarland, R. G., Challagalla, G. N., & Shervani, T. A. (2006). Influence tactics for effective adaptive selling. Journal of Marketing, 70(4), 103–117.
Menard, S. (1995). Applied Logistic Regression Analysis. Thousand Oaks, CA: Sage Publications.
Mullins, R., & Syam, N. (2014). Manager–salesperson congruence in customer orientation and job outcomes: The bright and dark sides of leadership in aligning values. Journal of Personal Selling & Sales Management, 34(3), 188–205.
Multon, K. D., Brown, S. D., & Lent, R. W. (1991). Relation of self-efficacy beliefs to academic outcomes: A meta-analytic investigation. Journal of Counseling Psychology, 18, 30–38.
Netemeyer, R. G., Maxham III, J. G., & Lichtenstein, D. R. (2010). Store manager performance and satisfaction: effects on store employee performance and satisfaction, store customer satisfaction, and store customer spending growth. Journal of Applied Psychology, 95(3), 530–545.
Nunnally, J. (1978). Psychometric methods (2nd ed.). New York: McGraw-Hill.
Oliver, R. L., & Anderson, E. (1994). An empirical test of the consequences of behavior-and outcome-based sales control systems. Journal of Marketing, 53–67.
Onyemah, V., Swain, S. D., & Hanna, R. (2010). A social learning perspective on sales technology usage: Preliminary evidence from an emerging economy. Journal of Personal Selling & Sales Management, 30(2), 131–142.
Pajares, F., & Kranzler, J. (1995). Self-efficacy beliefs and general mental ability in mathematical problem-solving. Contemporary Educational Psychology, 20(4), 426–443.
Panagopoulos, N. G., & Avlonitis, G. J. (2010). Performance implications of sales strategy: The moderating effects of leadership and environment. International Journal of Research in Marketing, 27(1), 46–57.
Perdue, B. C., & Summers, J. O. (1991). Purchasing agents' use of negotiation strategies. Journal of Marketing Research, 175–189.
Piccolo, R. F., & Colquitt, J. A. (2006). Transformational leadership and job behaviors: The mediating role of core job characteristics. Academy of Management Journal, 49(2), 327–340.
Pieterse, A. N., Van Knippenberg, D., Schippers, M., & Stam, D. (2010). Transformational and transactional leadership and innovative behavior: The moderating role of psychological empowerment. Journal of Organizational Behavior, 31(4), 609–623.
Podsakoff, P. M., MacKenzie, S. B., & Bommer, W. H. (1996). Transformational leader behaviors and substitutes for leadership as determinants of employee satisfaction, commitment, trust, and organizational citizenship behaviors. Journal of Management, 22(2), 259–298.
Raudenbush, S. W., & Bryk, A. S. (2002). Hierarchical Linear Models: Applications and Data Analysis Methods (Vol. Vol.1). Thousand Oaks, CA: Sage Publications.
Rich, G. A. (1997). The sales manager as a role model: Effects on trust, job satisfaction, and performance of salespeople. Journal of the Academy of Marketing Science, 25(4), 319–328.
Salomon, G. (1984). Television is" easy" and print is" tough": The differential investment of mental effort in learning as a function of perceptions and attributions. Journal of Educational Psychology, 76(4), 647–658.
Schmitz, C. (2013). Group influences of selling teams on industrial salespeople’s cross-selling behavior. Journal of the Academy of Marketing Science, 41(1), 55–72.
Schmitz, C., & Ganesan, S. (2014). Managing customer and organizational complexity in sales organizations. Journal of Marketing, 78(6), 59–77.
Schunk, D. H. (1981). Modeling and attributional effects on children's achievement: A self-efficacy analysis. Journal of Educational Psychology, 73(1), 93–105.
Schurr, P. H., & Ozanne, J. L. (1985). Influences on exchange processes: buyers' preconceptions of a seller's trustworthiness and bargaining toughness. Journal of Consumer Research, 11(4), 939–953.
Schwepker Jr., C. H. (2017). Psychological ethical climate, leader–member exchange and commitment to superior customer value: influencing salespeople’s unethical intent and sales performance. Journal of Personal Selling & Sales Management, 37(1), 72–87.
Shannahan, K., Bush, A. J., & Shannahan, R. J. (2013a). Are your salespeople coachable? how salesperson coachability, trait competitiveness, and transformational leadership enhance sales performance. Journal of the Academy of Marketing Science, 41(1), 40–54.
Shannahan, K. L., Shannahan, R. J., & Bush, A. J. (2013b). Salesperson coachability: What it is and why it matters. Journal of Business & Industrial Marketing, 28(5), 411–420.
Shoemaker, M. E. (1999). Leadership practices in sales managers associated with the self-efficacy, role clarity, and job satisfaction of individual industrial salespeople. Journal of Personal Selling & Sales Management, 19(4), 1–19.
Siemsen, E., Roth, A. V., & Balasubramanian, S. (2008). How motivation, opportunity, and ability drive knowledge sharing: The constraining-factor model. Journal of Operations Management, 26(3), 426–445.
Sin, H. P., Nahrgang, J. D., & Morgeson, F. P. (2009). Understanding why they don’t see eye to eye: An examination of leader–member exchange (LMX) agreement. Journal of Applied Psychology, 94(4), 1048–1057.
Slater, S. F., & Olson, E. M. (2000). Strategy type and performance: The influence of sales force management. Strategic Management Journal, 21(8), 813–829.
Smith, B., Andras, T. L., & Rosenbloom, B. (2012). Transformational leadership: Managing the twenty first century sales force. Psychology and Marketing, 29(6), 434–444.
Spiro, R. L., & Weitz, B. A. (1990). Adaptive selling: Conceptualization, measurement, and nomological validity. Journal of Marketing Research, 27(1), 61–69.
Stephenson, R. P., Cron, W. L., & Frazier, G. L. (1979). Delegating pricing authority to the salesforce: the effects of sales and profit performance. Journal of Marketing, 43(1), 21–28.
Sujan, H., Weitz, B. A., & Kumar, N. (1994). learning orientation, working smart, and effective selling. Journal of Marketing, 58(3), 39–52.
Sweller, J. (1994). Cognitive load theory, learning difficulty, and instructional design. Learning and Instruction, 4(4), 295–312.
Tyagi, P. K. (1985). Relative importance of key job dimensions and leadership behaviors in motivating salesperson work performance. Journal of Marketing, 49(3), 76–86.
Van Merrienboer, J. J., & Sweller, J. (2005). Cognitive load theory and complex learning: Recent developments and future directions. Educational Psychology Review, 17(2), 147–177.
Wayne, S. J., Shore, L. M., Bommer, W. H., & Tetrick, L. E. (2002). The role of fair treatment and rewards in perceptions of organizational support and leader-member exchange. Journal of Applied Psychology, 87(3), 590.
Weinberg, C. B. (1975). An optimal commission plan for salesmen’s control over price. Management Science, 21(8), 937–943.
Weinberg, C. B. (1978). Jointly optimal sales commissions for nonincome maximizing sales forces. Management Science, 24(12), 1252–1258.
Weingart, L. R., Thompson, L. L., Bazerman, M. H., & Carroll, J. S. (1990). Tactical behavior and negotiation outcomes. International Journal of Conflict Management, 1(1), 7–31.
Weitz, B. A. (1981). Effectiveness in sales interactions: a contingency framework. Journal of Marketing, 85–103.
Wieseke, J., Homburg, C., & Lee, N. (2008). Understanding the adoption of new brands through salespeople: A multilevel framework. Journal of the Academy of Marketing Science, 36(2), 278–291.
Wieseke, J., Ahearne, M., Lam, S. K., & van Dick, R. (2009). The role of leaders in internal marketing: A multilevel examination through the lens of social identity theory. Journal of Marketing, 73(2), 123–145.
Wieseke, J., Kraus, F., Alavi, S., & Kessler-Thönes, T. (2011). How leaders’ motivation transfers to customer service representatives. Journal of Service Research, 14(2), 214–233.
Wieseke, J., Alavi, S., & Habel, J. (2014). Willing to pay more, eager to pay less: The role of customer loyalty in price negotiations. Journal of Marketing, 78(6), 17–37.
Wilken, R., Cornelißen, M., Backhaus, K., & Schmitz, C. (2010). Steering sales reps through cost information: An investigation into the black box of cognitive references and negotiation behavior. International Journal of Research in Marketing, 27(1), 69–82.
Yukl, G., Seifert, C. F., & Chavez, C. (2008). Validation of the extended influence behavior questionnaire. The Leadership Quarterly, 19(5), 609–621.
Yun, S., Cox, J., & Sims Jr., H. P. (2006). The forgotten follower: A contingency model of leadership and follower self-leadership. Journal of Managerial Psychology, 21(4), 374–388.
Zenger, T. R., & Marshall, C. R. (2000). Determinants of incentive intensity in group-based rewards. Academy of Management Journal, 43(2), 149–163.
Zetik, D. C., & Stuhlmacher, A. F. (2002). Goal setting and negotiation performance: A meta-analysis. Group Processes & Intergroup Relations, 5(1), 35–52.
Zimmerman, B. J. (2000). Self-efficacy: An essential motive to learn. Contemporary Educational Psychology, 25(1), 82–91.
Zimmerman, B. J., & Bandura, A. (1994). Impact of self-regulatory influences on writing course attainment. American Educational Research Journal, 31(4), 845–862.
Zimmerman, B. J., Bandura, A., & Martinez-Pons, M. (1992). Self-motivation for academic attainment: The role of self-efficacy beliefs and personal goal setting. American Educational Research Journal, 29(3), 663–676.
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Alavi, S., Habel, J., Guenzi, P. et al. The role of leadership in salespeople’s price negotiation behavior. J. of the Acad. Mark. Sci. 46, 703–724 (2018). https://doi.org/10.1007/s11747-017-0566-1
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DOI: https://doi.org/10.1007/s11747-017-0566-1