Case Study 1: NLP — No Scientific Basis, Enormous Commercial Success
The Industry
NLP training is a global industry worth hundreds of millions of dollars. Certification programs range from $2,000 to $15,000+. There are estimated tens of thousands of "certified NLP practitioners" worldwide offering: - Business coaching and sales training - Therapy and personal development - Leadership development - Communication skills training - Weight loss and smoking cessation programs - Phobia treatment
The Evidence Vacuum
Despite this commercial success, systematic reviews (Witkowski, 2010; Sturt et al., 2012) find: - No evidence for the foundational claims (eye patterns, representational systems, anchoring) - No evidence that NLP therapy outperforms placebo or other established therapies - The one concept with some validity (reframing) was borrowed from cognitive therapy and doesn't require NLP
Why It Persists
Testimonial evidence. NLP clients report positive experiences — likely reflecting placebo, expectation effects, the relationship with the practitioner, and the few elements borrowed from legitimate therapy.
Certification creates advocates. A practitioner who invested $10,000 in certification has strong identity-protective (Chapter 1) and financial incentives to defend NLP's validity.
Unfalsifiability. "You're doing it wrong" is the universal defense against negative evidence.
Packaging. NLP wraps common sense in proprietary language: "pacing and leading" (building rapport then guiding — basic social skill), "reframing" (changing interpretation — CBT technique), "anchoring" (classical conditioning — basic psychology). The packaging creates the illusion of a novel system.
Discussion Questions
- Should NLP certification programs be required to disclose the lack of evidence?
- If NLP's "active ingredients" are borrowed from legitimate approaches, would rebranding them as CBT-lite be more honest?
- How should consumers evaluate practitioners who are "certified" in an unsupported system?