The Psychology Alibi: Attribution Shifting and the Role of "Trading Psychology" in the Market for Retail Trading Education

Commercial retail trading education rests on a widely repeated claim: the method can be taught, but whether the student profits is decided by "trading psychology" (discipline, fear, greed, patience). This paper proposes the Psychology-Alibi Hypothesis: when a method is discretionary and has no independently verified track record, the invocation of psychology is not an auxiliary pedagogical topic but a structural device that relocates the cause of loss from the method's expectancy to the student's character. Three results are developed. First, a simple expectancy decomposition shows that execution discipline is a bound, not a source: perfect adherence to a rule set delivers exactly the rule set's own expected value, so for a method with non-positive expectancy net of costs, discipline can only make the loss more precise. Second, using Popper's demarcation criterion and Lakatos's notion of the protective belt, the psychology explanation is shown to function as an ad hoc auxiliary hypothesis that renders the core claim ("the method works") immune to refutation by any sequence of student outcomes. Third, the self-serving attribution asymmetry documented in social psychology (Miller & Ross, 1975; Weiner, 1985) explains why this device is readily accepted by both seller and buyer, and why it opens a second market for "mindset" products. Evidence from the sociology of electronic finance (Preda, 2017), large-sample studies of retail underperformance (Barber & Odean, 2000; Barber, Lee, Liu & Odean, 2014; Chague, De-Losso & Giovannetti, 2020), regulatory data (ESMA, 2018) and the FTC's 2020 action against a large trading-education firm is reviewed as consistent with the hypothesis. The paper derives testable implications, proposes a content-analysis design for trading-education marketing, and states a two-tier verification standard (a multi-year, third-party-verified live record, followed by full mechanization of the rules) as a necessary condition before any pedagogical claim is made. Discipline retains one legitimate meaning: non-interference with the execution of an independently verified, fully specified edge.