Sources
Research & methodology
The research and frameworks behind the audit and assessment, in APA 7th edition. Academic research is listed separately from practitioner articles, industry surveys and commercially published sales frameworks. Sales frameworks describe widely used practitioner approaches; they are not independently validated science.
Methods
- SPIN Selling(Rackham, 1988)Moves from your current situation to the problems, their consequences and the value of fixing them.
- Gap Selling(Keenan, 2018)Compares where your operation is today with where you want it to be.
- Challenger Sale(Dixon & Adamson, 2011)Brings in relevant insight for your industry rather than generic questions.
- NEPQ(Acuff & Miner, 2023)Keeps questions conversational and free of pressure.
- Sandler Selling System(Sandler & Mattson, 2015)Checks early whether there is a real reason to change.
- LAERListen, acknowledge, explore, respond — for working through concerns.
- Tactical empathy and negotiation techniques(Voss & Raz, 2016)Open “how” and “what” questions that make your concerns easy to raise.
- Behavioural economics and buyer psychology(Kahneman & Tversky, 1979; Tversky & Kahneman, 1974; Samuelson & Zeckhauser, 1988; Ellsberg, 1961; Festinger, 1957; Frederick et al., 2009; Zeelenberg, 1999; Cialdini, 2021)How people weigh losses, risk, uncertainty and change — so estimates are framed fairly.
Academic research
Cialdini, R. B. (2021). Influence, new and expanded: The psychology of persuasion. Harper Business.
Ellsberg, D. (1961). Risk, ambiguity, and the Savage axioms. The Quarterly Journal of Economics, 75(4), 643–669. https://doi.org/10.2307/1884324
Festinger, L. (1957). A theory of cognitive dissonance. Stanford University Press. https://doi.org/10.1515/9781503620766
Frederick, S., Novemsky, N., Wang, J., Dhar, R., & Nowlis, S. (2009). Opportunity cost neglect. Journal of Consumer Research, 36(4), 553–561. https://doi.org/10.1086/599764
Kahneman, D., & Tversky, A. (1979). Prospect theory: An analysis of decision under risk. Econometrica, 47(2), 263–291. https://doi.org/10.2307/1914185
Samuelson, W., & Zeckhauser, R. (1988). Status quo bias in decision making. Journal of Risk and Uncertainty, 1(1), 7–59. https://doi.org/10.1007/BF00055564
Tversky, A., & Kahneman, D. (1974). Judgment under uncertainty: Heuristics and biases. Science, 185(4157), 1124–1131. https://doi.org/10.1126/science.185.4157.1124
Zeelenberg, M. (1999). Anticipated regret, expected feedback and behavioral decision making. Journal of Behavioral Decision Making, 12(2), 93–106. https://doi.org/10.1002/(SICI)1099-0771(199906)12:2<93::AID-BDM311>3.0.CO;2-S
Practitioner and consultancy research
Oldroyd, J. B., McElheran, K., & Elkington, D. (2011). The short life of online sales leads. Harvard Business Review, 89(3), 28. https://hbr.org/2011/03/the-short-life-of-online-sales-leads
Reichheld, F. (2001). Prescription for cutting costs [Bain brief]. Bain & Company. https://www.media.bain.com/Images/BB_Prescription_cutting_costs.pdf
Industry surveys
Asana. (2023, March 8). Asana Anatomy of Work Global Index 2023: Smart collaboration and clear goals integral to creating positive business opportunities [Press release]. Business Wire. https://www.businesswire.com/news/home/20230308005268/en/Asana-Anatomy-of-Work-Global-Index-2023
Communicate Staff. (2024, February 12). 85 percent of UAE residents want businesses to use WhatsApp. Communicate Online. https://communicateonline.me/news/85-percent-of-uae-residents-want-businesses-to-use-whatsapp/
Commercial sales frameworks (not independently validated)
Acuff, J., & Miner, J. (2023). The new model of selling: Selling to an unsellable generation. Morgan James Publishing.
Dixon, M., & Adamson, B. (2011). The challenger sale: Taking control of the customer conversation. Portfolio.
Keenan, J. (2018). Gap selling: Getting the customer to yes: How problem-centric selling increases sales by changing everything you know about relationships, overcoming objections, closing and price. A Sales Guy Publishing.
Rackham, N. (1988). SPIN selling. McGraw-Hill.
Sandler, D. H., & Mattson, D. (2015). You can't teach a kid to ride a bike at a seminar: Sandler Training's 7-step system for successful selling (2nd ed.). McGraw-Hill Education.
Voss, C., & Raz, T. (2016). Never split the difference: Negotiating as if your life depended on it. Harper Business.
Practitioner models without a verified original source
- LAER (Listen, Acknowledge, Explore, Respond). A sales-training model for handling objections, associated with Carew International. No dated original publication could be verified, so it is not cited.